Nuclear fusion reaction device and coil information determination method and device therefor

Abstract

A nuclear fusion reaction device (10) and a coil information determination method and device therefor. An inner annular surface (M) of a reaction chamber (101) in the nuclear fusion reaction device (10) protrudes towards a central axis (z1) of the reaction chamber (101), and a plurality of central solenoid coils (102) are sequentially arranged outside the reaction chamber (101) along the inner annular surface (M) of the reaction chamber (101). The method comprises: step 202, acquiring initial position information of a plurality of central solenoid coils (102) on the basis of contour information of a reaction chamber (101); step 204, determining target current information of the plurality of central solenoid coils (102) that are located at initial positions and can meet a target condition, wherein the target condition is that magnetic fluxes at a plurality of reference positions are equal and a zero magnetic field region is formed in the reaction chamber (101); and step 206, on the basis of the target current information of the plurality of central solenoid coils (102), the target condition, and a coil setting condition, adjusting information of the central solenoid coils (102) so as to obtain target coil information. The central solenoid coils (102) are configured on the basis of the target coil information, so that the fusion reaction effect can be improved.

Description

Methods and devices for determining information about nuclear fusion reactors and their coils

[0001] This application claims priority to Chinese Patent Application No. 202411043335.1, filed on July 31, 2024, entitled “Nuclear Fusion Reactor and Method and Apparatus for Determining Coil Information Thereof”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of nuclear fusion technology, and in particular to a method for determining coil information of a nuclear fusion reactor. It also relates to a device for determining coil information of a nuclear fusion reactor, a nuclear fusion reactor, a computing device, a computer-readable storage medium, and a computer program product. Background Technology

[0003] Currently, nuclear fusion technology is being widely studied due to its advantage of producing large amounts of clean energy. Nuclear fusion reactions require the use of nuclear fusion reactors (such as tokamak devices) to control the plasma and bring it to the required fusion conditions.

[0004] Nuclear fusion reactors rely on magnetic fields generated by coils to control the plasma. For example, the coils in a nuclear fusion reactor include a central solenoid coil. The magnetic field generated by the central solenoid coil excites the plasma current loop to heat and maintain the plasma current loop, bringing the plasma to the fusion conditions. Therefore, the central solenoid coil is crucial for the realization of a nuclear fusion reaction.

[0005] However, the radius of the central solenoid coil is currently small, and the magnetic field it generates can only induce a small amount of energy into the plasma, which is not conducive to the plasma fusion reaction. The supporting role of the central solenoid coil in the plasma fusion reaction still needs to be improved. Summary of the Invention

[0006] This application provides a method for determining coil information in a nuclear fusion reactor, wherein setting the central solenoid coil with target coil information can improve the fusion reaction effect. This application also relates to a coil information determination device for a nuclear fusion reactor, a nuclear fusion reactor, a computing device, a computer-readable storage medium, and a computer program product.

[0007] According to a first aspect of the embodiments of this application, a method for determining coil information of a nuclear fusion reactor is provided. The nuclear fusion reactor includes a reaction chamber and a plurality of central solenoid coils. The reaction chamber is annular, and the inner annular surface of the reaction chamber protrudes toward the central axis of the reaction chamber. The plurality of central solenoid coils are arranged sequentially outside the reaction chamber along the inner annular surface of the reaction chamber. The method includes:

[0008] Based on the contour information of the reaction chamber, the initial position information of multiple central solenoid coils is obtained;

[0009] Determine the target current information of the plurality of central solenoid coils located at the initial position that can achieve the target conditions; wherein, the target conditions include equal magnetic flux at multiple reference positions and the formation of a zero magnetic field region in the reaction chamber;

[0010] Based on the target current information of the multiple central solenoid coils, the target conditions, and the coil setting conditions, the information of the central solenoid coils is adjusted to obtain the target coil information.

[0011] According to a second aspect of the embodiments of this application, a nuclear fusion reactor is provided, including a plasma reaction chamber and a plurality of central solenoid coils;

[0012] The reaction chamber is annular, and the inner annular surface of the reaction chamber protrudes toward the central axis of the reaction chamber;

[0013] The plurality of central solenoid coils are arranged sequentially outside the reaction chamber along the inner annular surface of the reaction chamber, and are set according to the target coil information determined by the above method.

[0014] According to a third aspect of the embodiments of this application, a coil information determination device for a nuclear fusion reactor is provided. The nuclear fusion reactor includes a reaction chamber and a plurality of central solenoid coils. The reaction chamber is annular, and the inner annular surface of the reaction chamber protrudes towards the central axis of the reaction chamber. The plurality of central solenoid coils are arranged sequentially outside the reaction chamber along the inner annular surface of the reaction chamber. The coil information determination device includes:

[0015] The acquisition module is used to acquire the initial position information of multiple central solenoid coils based on the contour information of the reaction chamber;

[0016] The first determining module is used to determine the target current information of the plurality of central solenoid coils located at the initial position that can achieve the target conditions; wherein, the target conditions include equal magnetic flux at multiple reference positions and the formation of a zero magnetic field region in the reaction chamber;

[0017] The first adjustment module is used to adjust the information of the central solenoid coils based on the target current information of the plurality of central solenoid coils, the target conditions, and the coil setting conditions, so as to obtain the target coil information.

[0018] According to a fourth aspect of this application, a computing device is provided, comprising: a memory and a processor;

[0019] The memory is used to store computer programs / instructions, and the processor is used to execute the computer programs / instructions. When the programs / instructions are executed by the processor, they implement the steps of the above method.

[0020] According to a fifth aspect of this application, a computer-readable storage medium is provided that stores a computer program / instructions, which, when executed by a processor, implement the steps of the above-described method.

[0021] According to a sixth aspect of this application, a computer program product is provided, comprising a computer program / instructions that, when executed by a processor, implement the steps of the above-described method.

[0022] In this application, the inner ring surface of the reaction chamber in the nuclear fusion reactor protrudes towards the central axis of the reaction chamber, and the central solenoid coils are arranged sequentially outside the reaction chamber along the inner ring surface. The radius of the central solenoid coils can be relatively large, and the magnetic field generated can apply more energy to the plasma in the reaction chamber, which is beneficial to improving the fusion reaction effect. Furthermore, based on the contour information of the reaction chamber, the initial position information of the central solenoid coils is obtained, and the target current information of the central solenoid coils that can achieve the target conditions at the initial position is determined. If the central solenoid coils operate with the target current information at this initial position, the magnetic flux at multiple reference positions outside the reaction chamber can be equalized, forming a zero magnetic field region. Then, based on the target current information, target conditions, and coil setting conditions, the information of the central solenoid coils is adjusted to obtain the target coil information, so that setting the central solenoid coils with the target coil information can achieve the target conditions and coil setting conditions. This allows for the determination of a suitable setting method for the central solenoid coils, ensuring that the setting of the central solenoid coils meets the operating requirements of the nuclear fusion reactor and guarantees the nuclear fusion reaction effect of the nuclear fusion reactor. Attached Figure Description

[0023] Figure 1 is a schematic diagram of a nuclear fusion reactor provided in an embodiment of this application;

[0024] Figure 2 is a flowchart of a method for determining coil information of a nuclear fusion reactor according to an embodiment of this application;

[0025] Figure 3 is a simplified outline schematic diagram of a reaction chamber provided in an embodiment of this application;

[0026] Figure 4 is a flowchart of another method for determining coil information of a nuclear fusion reactor provided in an embodiment of this application;

[0027] Figure 5 is a schematic diagram of the structure of a coil information determination device for a nuclear fusion reactor according to an embodiment of this application;

[0028] Figure 6 is a structural block diagram of a computing device provided in an embodiment of this application. Detailed Implementation

[0029] Many specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0030] The terminology used in one or more embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the scope of the one or more embodiments of this application. The singular forms “a,” “the,” and “the” used in one or more embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” used in one or more embodiments of this application refers to and includes any or all possible combinations of one or more associated listed items. The term “at least one” in one or more embodiments of this application means “one or more,” and “a plurality of” means “two or more.” The term “comprising” is an open-ended description and should be understood as “including but not limiting,” and may include other content in addition to what has been described.

[0031] It should be understood that although the terms "first," "second," etc., may be used to describe various information in one or more embodiments of this application, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, "first" may also be referred to as "second" without departing from the scope of one or more embodiments of this application, and similarly, "second" may also be referred to as "first." Depending on the context, the word "if," as used herein, may be interpreted as "when," "in response to a determination," or "when," or "in the event of a determination."

[0032] With the development of nuclear fusion technology, the requirements for the fusion reaction effect of nuclear fusion reactors (such as tokamak devices) are becoming increasingly stringent, as are the requirements for the ease of installation and maintenance. A nuclear fusion reactor includes a reaction chamber and various coils, including a toroidal field coil, a central solenoid coil, and other shaping field coils. The toroidal field coil generates a toroidal magnetic field to guide the toroidal movement of plasma in the reaction chamber; the induced electromotive force generated by the current change in the central solenoid coil excites the plasma current loop to heat and maintain it; and the other shaping field coils control the shape of the plasma current loop. In this process, the central solenoid coil is crucial to the plasma current and temperature achievable by the nuclear fusion reactor, significantly impacting the fusion reaction effect.

[0033] Currently, nuclear fusion reactors have relatively small toroidal diameters; for example, the toroidal diameter ratio of a spherical tokamak is less than 2. This results in a compact structure, allowing full utilization of the circumferential magnetic field on the strong-field side and reducing construction costs. However, due to the small toroidal diameter, and the requirement that the central solenoid coil be located in the central axis region of the reaction chamber, the space available for the central solenoid coil is limited. Consequently, the radius of the central solenoid coil also needs to be reduced, leading to lower self-inductance and a lower magnetic flux generated under a given power supply. This results in less energy being induced into the plasma, while the energy stored in the magnetic field is higher, which is detrimental to plasma breakdown and heating. Furthermore, the small size of the central solenoid coil, with its connection points on both the top and bottom, coupled with the limited space available for its installation, poses challenges to the engineering design, installation, and maintenance of the nuclear fusion reactor. In addition, the limited usable space outside the reactor on the strong field side makes it difficult to install strong field side shaping coils or conduct various experiments that require plasma to enter from the strong field side, which will cause difficulties in the physical control and research of nuclear fusion reactors.

[0034] This application provides a nuclear fusion reactor device. The space for setting the central solenoid coil in this device can be relatively large, and correspondingly, the radius of the central solenoid coil can be large, ensuring better control of the plasma and facilitating the installation and maintenance of the central solenoid coil. It also benefits related physical control and research on the strong-field side of the nuclear fusion reactor. This application also provides a method for determining the coil information of a nuclear fusion reactor. Based on this method, target coil information matching the nuclear fusion reactor can be determined for the central solenoid coil, so that setting the central solenoid coil based on the target coil information can better control the plasma and achieve better nuclear fusion reaction results. This application also relates to a coil information determination device for a nuclear fusion reactor, a nuclear fusion reactor device, a computing device, a computer-readable storage medium, and a computer program product, which will be described in detail below.

[0035] Figure 1 is a schematic diagram of a nuclear fusion reactor according to an embodiment of this application. Figure 1 shows a longitudinal cross-sectional view of the nuclear fusion reactor, which can be a plane passing through the central axis of the nuclear fusion reactor. As shown in Figure 1, the nuclear fusion reactor 10 includes a reaction chamber 101 and multiple central solenoid coils 102. The reaction chamber 101 is annular, and the central axis of the nuclear fusion reactor 10 is also the central axis z1 of the reaction chamber 101. The inner annular surface M of the reaction chamber 101 protrudes towards the central axis z1 of the reaction chamber, and the inner annular surface M has a certain inclination. For example, the longitudinal cross-sectional shape of the reaction chamber 101 is similar to a D-shape, and the arc edge of the D-shaped cross-section faces the central axis z1 of the reaction chamber 101. The inner annular surface M is the surface where the arc edge of the D-shaped cross-section is located. For example, the inner annular surface M can be regarded as the surface formed by rotating the arc edge around the central axis z1.

[0036] The plurality of central solenoid coils 102 are located within the surrounding area of ​​the reaction chamber 101 and are arranged sequentially along the inner annular surface M of the reaction chamber 101 outside the reaction chamber 101. The arrangement of the plurality of central solenoid coils 102 can form an hourglass shape. The plurality of central solenoid coils 102 can be divided into two groups of coils, located on opposite sides of the equatorial plane of the reaction chamber. These two groups of coils are symmetrically arranged, and the radii of each central solenoid coil 102 in each group are different. The plurality of central solenoid coils 102 can be configured according to the target coil information determined by the coil determination method provided in the embodiments of this application, so that the central solenoid coils 102 meet the requirements of the nuclear fusion reaction, resulting in a better nuclear fusion reaction effect. In some embodiments, each central solenoid coil is wound from the same cable, and different central solenoid coils can be considered as different segments within the overall central solenoid coil.

[0037] The nuclear fusion reactor 10 may further include a toroidal field coil (not shown in the figure), which can be nested or non-nested. In the nested arrangement, the toroidal field coils and each central solenoid coil 102 are nested within each other, with portions of the structure in both the toroidal field coils and the central solenoid coils 102 located within the enclosed region of the other. In the non-nested arrangement, the toroidal field coil is located between the central solenoid coil 102 and the reaction chamber 101. In the nested arrangement, the volt-second number of the central solenoid coil 102 can be higher; in the non-nested arrangement, the design and installation of the nuclear fusion reactor are more flexible and convenient. The following sections of this specification will use the non-nested arrangement as an example.

[0038] The nuclear fusion reactor device provided in this embodiment can change the overall shape of the central solenoid coil 102 from a cylindrical shape to an hourglass shape while keeping the ring diameter of the reaction chamber 101 relatively small. Compared to fusion reactor devices in the related art, in the nuclear fusion reactor device of this embodiment, the radius of the central solenoid coil 102 located in the middle can remain unchanged, while the radii of the central solenoid coils 102 located at the upper and lower ends are increased. This allows the magnetic field generated by the central solenoid coil 102 to apply more energy to the plasma in the reaction chamber, which is beneficial for improving the fusion reaction effect. Furthermore, this reduces the power load on the central solenoid coil 102, improves the energy utilization efficiency of the power supply, and enhances the accessibility of components on the strong field side of the nuclear fusion reactor device, making the operating space on the strong field side more spacious.

[0039] The nuclear fusion reactor device provided in this application is well-suited for experimental research on the negative triangular configuration of the plasma ring. This configuration causes the plasma ring in the reactor to undergo a negative triangular deformation under the influence of a magnetic field, thus achieving the conditions for a fusion reaction. The negative triangular deformation of the plasma ring results in less boundary turbulence, which can suppress microscopic instabilities at the ion scale. Consequently, the interaction between the plasma and the reaction chamber walls is reduced, effectively lowering the risk of wall damage. Furthermore, the negative triangular deformation allows for lower electron temperature and density perturbations in the core region of the plasma ring, significantly increasing the energy confinement time and improving the magnetic field energy utilization rate, thereby ensuring a better nuclear fusion reaction effect.

[0040] Figure 2 is a flowchart of a method for determining coil information of a nuclear fusion reactor according to an embodiment of this application. This method can be applied to a coil information determining device, which can be a computing device such as a computer, desktop computer, laptop computer, or smartphone. In this embodiment, the coil information determining method is used to determine how each central solenoid coil 102 in the nuclear fusion reactor 10 shown in Figure 1 is set up, obtaining target coil information, such as the specific structure of each central solenoid coil 102, its relative position in the reaction chamber 101, and its operating parameters. Operators can set up the central solenoid coils 102 based on this target coil information to prepare the nuclear fusion reactor 10, and can also control the operation of the central solenoid coils 102 based on this target coil information. The method includes steps 202 to 206.

[0041] Step 202: Based on the contour information of the reaction chamber, obtain the initial position information of multiple central solenoid coils.

[0042] The contour information of the reaction chamber may include at least one of the following: the inclination information of the inner annular surface, the height and width of the longitudinal section, the minimum distance between the inner annular surface and the central axis of the reaction chamber, and the location information of the bending points in the inner annular surface. Based on this information, the shape and size of the reaction chamber can be determined, and the specific contour of the reaction chamber can be obtained. After determining the contour information, the elongation ratio and the ring diameter ratio of the reaction chamber can be determined. The elongation ratio refers to the ratio of the height to the width of the longitudinal section of the reaction chamber, and the ring diameter ratio refers to the ratio of the large radius to the small radius in the longitudinal section of the reaction chamber. Referring to Figure 1, the large radius refers to the distance between the central axis z1 of the reaction chamber 101 and the reference axis z2, which passes through the midpoint of the longitudinal section of the reaction chamber 101 and is parallel to the central axis z1 of the reaction chamber 101. The small radius refers to the maximum distance between the reference axis z2 and the outer edge of the reaction chamber 101 in the direction perpendicular to the central axis z1 (such as the radial direction of the reaction chamber 101). In the embodiments of this application, the ring diameter ratio of the reaction chamber can be small, such as less than 2.

[0043] Figure 3 is a simplified outline diagram of a reaction chamber according to an embodiment of this application. Figure 3 illustrates a longitudinal section of the reaction chamber located to the right of the central axis z1 in Figure 1, and a target coordinate system is established for this longitudinal section. The horizontal axis (R-axis) of this target coordinate system corresponds to the equatorial plane of the reaction chamber, and the vertical axis (Z-axis) corresponds to the central axis of the reaction chamber. As shown in Figure 3, a hexagon enclosed by solid lines and symmetrical about the R-axis represents the longitudinal section of the reaction chamber, and a rectangle enclosed by dashed lines and symmetrical about the R-axis represents the region where the longitudinal section of the reaction chamber is located. The outline information of the reaction chamber can be determined based on the coordinate value range corresponding to the hexagon and the rectangle.

[0044] Based on the coordinates of the vertices of the rectangle, its length and width can be determined. The length of the rectangle is the height of the longitudinal section of the reaction chamber, and the width of the rectangle is the width of the longitudinal section of the reaction chamber. Based on the coordinate range corresponding to the rectangle in the target coordinate system, the elongation ratio and ring diameter ratio of the reaction chamber can be determined.

[0045] Based on the coordinates of each vertex of the hexagon in the target coordinate system, the location information of the bending points in the inner torus of the reaction chamber, the degree of inclination of the inner torus, and the minimum distance between the inner torus and the central axis of the reaction chamber can be determined. For example, vertices A and B in the hexagon are the bending points in the inner torus of the reaction chamber, and the coordinates of vertices A and B represent the location information of these bending points. Based on the coordinates of vertices A and B in the hexagon, the inclination angle 'a' of the inner torus can be determined, which represents the degree of inclination of the inner torus. This inclination angle 'a' can range from 50 degrees to 80 degrees. The x-coordinate of vertex B represents the minimum distance between the inner torus and the central axis of the reaction chamber.

[0046] In one embodiment, the height of a portion of the central solenoid coil can be determined based on the coordinate values ​​of each vertex of the hexagon in the target coordinate system. For example, the height of the central solenoid coil positioned near the equatorial plane of the reaction chamber can be determined. Only one central solenoid coil can be positioned between vertex B and the equatorial plane. This central solenoid coil can be relatively high and can be referred to as the middle cylinder. The height of this central solenoid coil can be determined based on the vertical axis coordinate value of vertex B. For example, if the height of the central solenoid coil is equal to the vertical axis coordinate value of vertex B, the upper end of the central solenoid coil will be flush with vertex B after installation. In this embodiment, the height of the middle cylinder can be related to the total height of the reaction chamber, such as being less than or equal to 1 / 2 of the total height of the reaction chamber.

[0047] This application embodiment only uses the portion of the hexagon located above the R-axis to determine the required information (such as the degree of inclination and the height of the central solenoid coil). Since the hexagon is symmetrical about the R-axis, the portion of the hexagon located below the R-axis can also be used to determine the required information in the same way, which is not limited here.

[0048] In one embodiment, the coil information determining device may be equipped with an application program for determining coil information, such as a fusion reaction simulation program. A user can operate the coil information determining device to launch the application. This user is a designer, fabricator, or maintainer of the nuclear fusion reactor. After the application is launched, the coil information determining device can display an information input page where the user can input settings for the fusion reactor. The application then executes a corresponding process based on the input information to determine the required information, such as the target coil information of the central solenoid coil. In this embodiment, the contour information of the reaction chamber can be pre-set information, which the coil information determining device can directly acquire; or the contour information can be information entered by the user through the information input page displayed on the coil information determining device, in which case the coil information determining device acquires the contour information based on the information input page.

[0049] Since the central solenoid coils are arranged sequentially along the inner annular surface of the reaction chamber, and the contour information of the reaction chamber includes information about the inner annular surface, the coil information determining device can determine the possible positions of the central solenoid coils based on this contour information, and can draft the initial position of the central solenoid coils to obtain initial position information reflecting this initial position. In one implementation, this initial position information can be automatically generated by the coil information determining device based on the contour information and some initial coil setting conditions (such as coil spacing and dimensions). In another implementation, this initial position information can also be input by the user through an information input page.

[0050] While acquiring the initial position information of multiple central solenoid coils, other coil information is also obtained, such as the initial number of central solenoid coils and the initial structural parameters of each central solenoid coil. These structural parameters may include the cross-sectional dimensions of the central solenoid coil, including the coil height and coil width. The coil width refers to the radial width of the cross-section parallel to the radial direction within the coil, or it can also be called the coil thickness. For example, please refer to Figure 3, where small squares represent the cross-section of the central solenoid coil. The coil height can be dZ, and the coil width can be dR. In some embodiments, these structural parameters may also include information such as the number of coil turns, the coil material, and the diameter of the winding wire used.

[0051] In some implementations, obtaining the initial position information of multiple central solenoid coils based on the contour information of the reaction chamber in step 202 may include steps 2022 to 2026.

[0052] Step 2022: Based on the contour information of the reaction chamber and the setting method of the toroidal field coil in the nuclear fusion reactor, determine the setting baseline information of the central solenoid coil.

[0053] The arrangement of the toroidal field coils in a nuclear fusion reactor affects the baseline of the central solenoid coil, and consequently, its location. This baseline refers to the line along which each central solenoid coil is sequentially arranged, corresponding to the outline boundary of each coil. The baseline information reflects its specific location. If the toroidal field coils are nested, the inner surface of the reaction chamber serves as the baseline, allowing for a larger radius. If the toroidal field coils are not nested, the central solenoid coil must be placed outside the toroidal field coils. The baseline must be determined by considering the thickness of the toroidal field coils on top of the inner surface of the reaction chamber, resulting in a reduced radius for the central solenoid coil.

[0054] The toroidal field coil can be set up using a pre-defined default method, with the coil information determining device directly acquiring the stored toroidal field coil setup information. Alternatively, the user can input the toroidal field coil setup information via the information input page displayed on the coil information determining device. Based on the contour information of the reaction chamber and the toroidal field coil setup information, the coil information determining device can automatically calculate the setup baseline information for the central solenoid coil. This setup baseline information may include the inclination of the setup baseline and the distance between the setup baseline and the central axis of the reaction chamber. The inclination of the setup baseline can be substantially consistent with the inclination of the toroidal surface within the reaction chamber. Please refer to Figure 3, where the dashed line L represents the setup baseline.

[0055] Step 2024: Based on the tilt of the set baseline, determine the overlap direction information of adjacent central solenoid coils.

[0056] In this embodiment, adjacent central solenoid coils may overlap to a certain extent radially or axially, such as the R-coordinate or Z-coordinate ranges of adjacent central solenoid coils overlapping. This can reduce magnetic leakage between central solenoid coils and avoid energy waste. This overlapping method can be called tiling; radial overlap is called lateral tiling, and axial overlap is called longitudinal tiling. In longitudinal tiling, adjacent central solenoid coils are nested together.

[0057] If the baseline has a large inclination, adjacent central solenoid coils can overlap to some extent axially. If the baseline has a small inclination, adjacent central solenoid coils can overlap to some extent radially. The coil information determination device can compare the inclination angle corresponding to the baseline with an angle threshold and determine the overlap direction information based on the comparison result.

[0058] Step 2026: Based on the baseline information, overlap direction information, and initial cross-sectional dimensions of the central solenoid coil, obtain the initial position information of multiple central solenoid coils.

[0059] The initial cross-sectional dimensions of the central solenoid coil may include its height and width. These initial dimensions can be default values ​​or user-defined. Taking a roughly rectangular cross-section as an example, the coil information determining device, based on baseline information, overlap direction information, and the initial cross-sectional dimensions of the central solenoid coil, arranges the coils with their inner sharp corners close to the baseline to draft the initial position information of each central solenoid coil. This inner sharp corner refers to the angle in the rectangular cross-section of the central solenoid coil closest to the baseline. Referring to Figure 3, the inner sharp corner of the central solenoid coil can be angle C. Angle C in the rectangular cross-section of each central solenoid coil can be set close to the baseline L. Figure 3 shows an example of adjacent central solenoid coils overlapping radially.

[0060] In one embodiment, the initial position information of the central solenoid coil includes the coordinates of any corner of its cross-section and the initial cross-sectional dimensions. For example, the initial position information may include (R0, Z0, dR, dZ), where R0 represents the R coordinate of the corner in the target coordinate system, Z0 represents the Z coordinate of the corner in the target coordinate system, dR represents the radial width of the cross-section, and dZ represents the axial height of the cross-section. For instance, the corner could be the lower left corner of the cross-section of the central solenoid coil shown in Figure 3.

[0061] For the central solenoid coil (i.e., the middle cylinder) located near the equatorial plane of the reaction chamber, it can be arranged directly based on the bend point of the inner annular surface of the reaction chamber, such as between the bend point and the equatorial plane of the reaction chamber, without needing to be arranged based on the sharp corners of the cross-section. The initial position information of the middle cylinder is also determined in step 2026.

[0062] In one embodiment, after determining the initial position information of each central solenoid coil, this initial position information can be displayed to the user. For example, an image of the nuclear fusion reactor can be displayed as an image (such as a 3D image), showing the shape of the reaction chamber and the positions of each central solenoid coil, as well as the positions of the circumferential field coils. In some embodiments, information about each component can also be labeled in the image.

[0063] Step 204: Determine the target current information of multiple central solenoid coils that can achieve the target conditions at the initial position; wherein, the target conditions include equal magnetic flux at multiple reference positions and the formation of a zero magnetic field region in the reaction chamber.

[0064] After determining the initial position information of each central solenoid coil, the coil information determining device can determine the current on each central solenoid coil that can achieve the target conditions, obtaining the target current information. Based on this target current information, the normal operation of the nuclear fusion reactor can be guaranteed. For the nuclear fusion reactor to undergo a fusion reaction, a zero magnetic field region needs to be formed in the reaction chamber. A larger area of ​​this region will result in a better nuclear fusion reaction effect. The zero magnetic field region mentioned in this application embodiment refers to a region with a low magnetic field, which is close to 0, not a region with an absolutely zero magnetic field. For example, a region with a magnetic field less than 10 Gauss can be called a zero magnetic field region. This target current information can be the transmission current drafted for the central solenoid coil, and this target current information may be further adjusted later.

[0065] In this embodiment, the coil information determining device can determine multiple reference positions such that the magnetic flux at these reference positions is equal, and then determine a zero magnetic field region within the area enclosed by these reference positions. This allows for the determination of the current in the central solenoid coil under these conditions, thus obtaining target current information. The reference positions can be located outside the reaction chamber. This limits the range of the zero magnetic field region, ensuring that the target current information meets the requirements of the zero magnetic field region and guarantees high accuracy. Furthermore, determining the zero magnetic field region within a smaller range reduces additional computational overhead and improves computational efficiency.

[0066] The coil information determining device can use a pre-defined method to determine the target current information based on the initial position information of the central solenoid coil and the target conditions. This determination method will be described in detail later and will not be elaborated on here.

[0067] Step 206: Based on the target current information, target conditions, and coil setting conditions of multiple central solenoid coils, adjust the information of the central solenoid coils to obtain the target coil information.

[0068] The coil information determination device, based on the draft target current information, further refines the information of each central solenoid coil to achieve better nuclear fusion reaction results. The device can also use target conditions and coil setting conditions as constraints for adjusting the information of each central solenoid coil, ensuring that adjustments to the central solenoid coil information do not affect the achievement of the target conditions and, as far as possible, satisfy them. Setting the central solenoid coils according to the target coil information achieves both the target conditions and the coil setting conditions. This ensures that target coil information more closely matches the requirements of the nuclear fusion reaction is obtained for the central solenoid coils, allowing for the actual setting of the central solenoid coils in the nuclear fusion reactor based on this target coil information to achieve better nuclear fusion reaction results.

[0069] The information about the central solenoid coils can include at least one of the following: quantity, location, structural parameters, connection method, target current, and current density. Specifically, information such as the geometry, current, current density, and inductive load of the central solenoid coils can be adjusted. The geometric information of the central solenoid coils can include the quantity, location, and structural parameters, such as coil width, coil height, number of turns, coil material, and the diameter of the winding wire used to form the coil. In one approach, the current density can be changed by adjusting the structural parameters of the central solenoid coils (such as the coil width). The inductive load can be changed by adjusting the connection method of the central solenoid coils, such as connecting some central solenoid coils in series.

[0070] In some implementations, after determining the target coil information, the coil information determining device can also display an effect diagram of setting up the central solenoid coil based on the target coil information, and annotate detailed information of each component. The coil information determining device can also display a simulation effect of the fusion reaction of the nuclear fusion reactor when the central solenoid coil is set up based on the target coil information, so that the user can determine whether the fusion reaction requirements are met based on the simulation effect and whether further adjustments to the target coil information are needed. Alternatively, the coil information determining device may not display the simulation effect to the user, but instead independently determine whether the corresponding simulation effect meets the requirements; if it does, it outputs the target coil information; otherwise, it continues to make adjustments.

[0071] In some embodiments of this application, the nuclear fusion reactor further includes a compensation coil located on the weak field side outside the reactor chamber, such as above, below, or to the right of the reactor chamber outline shown in Figure 3. This compensation coil provides auxiliary support for the formation of a zero magnetic field region. The current required to be transmitted by this compensation coil can be determined in a manner similar to determining the target coil information for a central solenoid coil. Further details regarding this compensation coil are not provided in the embodiments of this application.

[0072] In summary, in the coil information determination method for a nuclear fusion reactor provided in this application embodiment, the inner ring surface of the reaction chamber protrudes towards the central axis of the reaction chamber, and the central solenoid coils are arranged sequentially outside the reaction chamber along the inner ring surface. The radius of the central solenoid coils can be relatively large, and the generated magnetic field can apply more energy to the plasma in the reaction chamber, which is beneficial to improving the fusion reaction effect of the plasma. Furthermore, based on the contour information of the reaction chamber, the initial position information of the central solenoid coils is obtained, and the target current information of the central solenoid coils that can achieve the target conditions at the initial position is determined. If the central solenoid coils operate with the target current information at the initial position, the magnetic flux at multiple reference positions outside the reaction chamber can be equalized, forming a zero magnetic field region. Then, based on the target current information, target conditions, and coil setting conditions, the information of the central solenoid coils is adjusted to obtain the target coil information, so that the central solenoid coils can achieve the target conditions and coil setting conditions when set with the target coil information. This allows for the determination of a suitable configuration for the central solenoid coil, ensuring that the configuration meets the operational requirements of the nuclear fusion reactor and guarantees the effectiveness of the nuclear fusion reaction.

[0073] The following describes some implementation methods for determining the target current information in step 204. Step 204 may include the following steps 2042 to 2046: first, select multiple reference positions, and then, when the magnetic flux at the multiple reference positions is equal and a zero magnetic field region is formed, determine the target current information of the central solenoid coil.

[0074] Step 2042: Based on the initial position information of each central solenoid coil, determine a reference position outside the reaction chamber to obtain information on multiple reference positions; wherein, one reference position is located between the center point of each central solenoid coil and the cross-section center point of the reaction chamber.

[0075] The cross-section of the reaction chamber refers to the longitudinal cross-section, as shown in Figure 1 or Figure 3, where the center point of the cross-section refers to its center point. The coil information determining device can determine multiple reference positions corresponding to each of the multiple central solenoid coils, determining a specific reference position for each central solenoid coil. Each reference position is located between the corresponding central solenoid coil and the center point of the reaction chamber's cross-section, such as between the center point of the central solenoid coil's cross-section and the center point of the reaction chamber's cross-section.

[0076] In this embodiment, both the central solenoid coil and the reaction chamber are annular. The central solenoid coil produces approximately the same effect on positions at the same distance from it. Different reference positions can be determined based on different longitudinal sections, but the characteristics of the reference positions corresponding to the same central solenoid coil in different longitudinal sections are the same. This embodiment uses the determination of the reference positions corresponding to each central solenoid coil for the same longitudinal section as an example for illustration.

[0077] In one embodiment, the coil information determining device can determine the line connecting the center point of the cross-section of each central solenoid coil to the center point of the cross-section of the reaction chamber, determine the intersection of this line with the inner annular surface of the reaction chamber, and then determine the position of the midpoint or near the midpoint between the center point of the cross-section of the central solenoid coil and this intersection as a reference position. This reference position is determined based on experience. Therefore, by using this method to determine the corresponding reference positions for multiple central solenoid coils, multiple reference positions are obtained. The information of the reference position may include information such as the distance between the reference position and the central solenoid coil.

[0078] After selecting a reference position, the coil information determining device can determine the magnetic flux at each reference position. That is, before step 2044, the coil information determining device can first determine the magnetic flux at each reference position. The magnetic flux at each reference position can be the total magnetic flux of the magnetic fields generated by each central solenoid coil at that reference position. In some embodiments, the coil information determining device determines the magnetic flux information at each reference position through steps s11 and s12.

[0079] Step s11: Based on the initial position information of multiple central solenoid coils, determine the magnetic flux influence parameters of each central solenoid coil on each position in the target area, wherein the target area includes each central solenoid coil and the area where the reaction chamber is located.

[0080] The coil information determining device can first select various locations within the target area, such as taking spatial grid points at certain intervals within the target area, with each spatial grid point representing a location within the target area. This interval can be 5 centimeters, or it can be 2 centimeters, 3 centimeters, 10 centimeters, or other intervals. In some embodiments, the target area may also include areas other than the central solenoid coil and the reaction chamber area; this is not limited here.

[0081] The coil information determining device can determine the distance between each central solenoid coil and each position in the target area based on the initial position information of each central solenoid coil. Based on this distance, it can determine the magnetic flux influence parameter of the central solenoid coil at that position. This magnetic flux influence parameter characterizes the proportional relationship between the magnetic flux at that position and the current of the central solenoid coil under the influence of the central solenoid coil. Assuming the number of central solenoid coils is N, each position in the target area can have N magnetic flux influence parameters, corresponding to N central solenoid coils. In some embodiments, this magnetic flux influence parameter is a magnetic flux influence parameter for pole magnetic flux. This magnetic flux influence parameter can be a Green's function of magnetic flux, such as denoted by M_psi.

[0082] Step s12: Based on the magnetic flux influence parameters of each central solenoid coil on each reference position, determine the magnetic flux information of each reference position under the action of multiple central solenoid coils.

[0083] If the number of central solenoid coils and reference positions is both N, then an N*N magnetic flux influence parameter matrix (e.g., denoted by M0) can be obtained. Each value in this matrix represents the magnetic flux influence parameter of a central solenoid coil on a reference position. Based on the magnetic flux influence parameters of each central solenoid coil on each position in the target area determined in step s11, the magnetic flux influence parameters of each central solenoid coil on each reference position can be obtained. In one approach, the reference position can be a selected spatial grid point in the target area, in which case the magnetic flux influence parameter of that reference position can be obtained directly. In another approach, if the reference position is not a spatial grid point, the magnetic flux influence parameter of the spatial grid point closest to the reference position can be determined as the magnetic flux influence parameter of that reference position.

[0084] The coil information determination device can, for each reference position, multiply the current of a central solenoid coil by the magnetic flux influence parameter of that central solenoid coil at that reference position to obtain the magnetic flux generated by that central solenoid coil at that reference position. Adding the magnetic flux generated by all the central solenoid coils at that reference position yields the total magnetic flux at that reference position. For example, the current of each central solenoid coil is represented by an N-dimensional vector I, and the magnetic flux psi at each reference position can be obtained using M0*I.

[0085] Step 2044: Determine the reference current information of multiple central solenoid coils when the magnetic flux at each reference position is equal.

[0086] The coil information determining device can ensure that the magnetic flux at each reference position obtained in step 2042 is equal, and list N-1 equations, such as psi_1=psi_2, psi_2=psi_3, ..., psi_(N-1)=psi_N. Solving these N-1 equations yields the current relationship between each central solenoid coil, such as a proportional relationship. The coil information determining device can provide the reference current information (e.g., I0) of any central solenoid coil to obtain the reference current information of N central solenoid coils.

[0087] Step 2046: When a zero magnetic field region exists in the area enclosed by the lines connecting multiple reference positions based on the reference current information of multiple central solenoid coils, the reference current information of the multiple central solenoid coils is determined as the target current information; wherein, the zero magnetic field region includes multiple adjacent positions where the magnetic field value is less than the target threshold.

[0088] The coil information determining device can determine the magnetic field information at each position within the enclosed region of the connecting lines of multiple reference positions based on the obtained reference current information of each central solenoid coil. This magnetic field information may include magnetic field values. Based on the magnetic field information at each position, it can be determined whether a zero magnetic field region exists within the enclosed region. For example, a zero magnetic field region can be a region with a magnetic field value less than a target threshold (e.g., 10 Gauss). A zero magnetic field region includes multiple adjacent positions, and the magnetic field values ​​at these adjacent positions may all be less than the target threshold. In some embodiments, the coil information determining device may perform steps s21 to s23 before step 2046 to determine the magnetic field information at each position within the enclosed region of the connecting lines of multiple reference positions and to determine whether a zero magnetic field region exists within the enclosed region.

[0089] Step s21: Based on the initial position information of multiple central solenoid coils, determine the magnetic field influence parameters of each position in the region enclosed by the line connecting multiple reference positions for each central solenoid coil.

[0090] Step s21 can refer to the relevant introduction regarding magnetic flux influence parameters in step s11. The coil information determining device can determine the distance between each position within the area enclosed by the line connecting the multiple reference positions based on the initial position information of each central solenoid coil. Based on this distance, the magnetic field influence parameter of the central solenoid coil at that position can be determined. This magnetic field influence parameter characterizes the relationship between the magnetic field value at that position and the current of the central solenoid coil under the influence of the central solenoid coil. In some embodiments, this magnetic field influence parameter includes magnetic field influence parameters for the radial magnetic field (i.e., the magnetic field in the R direction) and the vertical magnetic field (i.e., the magnetic field in the Z direction). This magnetic field influence parameter can be a Green's function of the magnetic field, such as the Green's function of the radial magnetic field represented by M_Br, and the Green's function of the vertical magnetic field represented by M_Bz. The R direction and Z direction can be collectively referred to as the pole direction.

[0091] In some implementations, the coil information determining device can simultaneously determine the magnetic field influence parameters at each location within a target region, where the target region includes the area enclosed by the lines connecting the multiple reference locations, when determining the magnetic flux influence parameters. This allows for the direct determination of the magnetic field influence parameters at each location within the enclosing region based on the magnetic field influence parameters at each location within the target region. Even after adjustments to the reference locations, there is no need to recalculate new magnetic field influence parameters; the adjusted magnetic field influence parameters can still be directly obtained.

[0092] Step s22: Based on the magnetic field influence parameters and the reference current information of multiple central solenoid coils, determine the magnetic field value at each location in the reaction chamber.

[0093] The coil information determination device calculates the magnetic field value at each location in the reaction chamber based on the relationship between current and magnetic field reflected by the magnetic field influence parameters and reference current information from multiple central solenoid coils. For example, for each location, the vertical magnetic field value can be calculated separately based on the vertical magnetic field influence parameters, and the radial magnetic field value can be calculated based on the radial magnetic field influence parameters. The square root of the sum of the squares of the vertical and radial magnetic field values ​​is determined as the overall magnetic field value at that location. If the overall magnetic field value at that location is less than a target threshold, that location is determined to be a zero magnetic field location.

[0094] Step s23: Based on the magnetic field values ​​at each location within the enclosed region, determine whether there is a zero magnetic field region within the enclosed region.

[0095] After obtaining the magnetic field values ​​at each location within the enclosed area, the coil information determining device can determine whether there are multiple adjacent locations with magnetic field values ​​less than a target threshold, thereby determining whether a zero magnetic field region exists. If multiple adjacent locations with magnetic field values ​​less than the target threshold exist, the region containing these multiple adjacent locations is the zero magnetic field region.

[0096] When a zero-magnetic-field region exists within the enclosed area, the reference current information of each central solenoid coil can be considered sufficient to guarantee the normal occurrence of the nuclear fusion reaction, and thus this reference current information can be determined as the target current information. This target current information can be considered as an iso-flux current distribution information. When a zero-magnetic-field region does not exist within the enclosed area, the reference current information of each central solenoid coil can be considered insufficient to guarantee the normal occurrence of the nuclear fusion reaction, and adjustments to the reference current information are necessary.

[0097] In some implementations, if there is no zero magnetic field region in the area enclosed by the lines connecting the multiple reference positions, the coil information determining device can adjust the multiple reference positions and re-execute step 2044 and the step of determining whether there is a zero magnetic field region based on the information of the adjusted multiple reference positions, until there is a zero magnetic field region in the area enclosed by the lines connecting the multiple reference positions, so as to determine the target current information.

[0098] After adjusting the reference position, the coil information adjustment device needs to re-determine the magnetic flux information of each reference position after adjustment under the action of multiple central solenoid coils (such as performing steps s11 and s12 above). Based on the magnetic flux information, step 2044 is re-executed to determine the reference current information of each central solenoid coil, and then the magnetic field value of each position within the line range of the reference position is determined (such as performing steps s21 and s22 above), and then it is determined whether there is a zero magnetic field region (such as performing steps s21 and s23 above).

[0099] In some embodiments, after determining the target current information of each central solenoid coil through step 204 above, the coil information determining device can further optimize the target current information to obtain a better zero magnetic field region and achieve a better nuclear fusion reaction effect. For example, after step 204, the coil information determining device can perform the following steps s31 and s32.

[0100] Step s31: Adjust the target current information of multiple central solenoid coils within the current range, and determine the information of the zero magnetic field region in the reaction chamber after the target current information is adjusted; wherein, the current range is the range with the target current as the median value.

[0101] The coil information determining device uses the determined target current information as an initial value and adjusts the target current information within a certain current range near the target current information. For example, the maximum value in the current range is 1.2 times the target current information, and the minimum value in the current range is 0.8 times the target current information. After each adjustment, information about the zero magnetic field region in the reaction chamber after adjustment can be determined, such as the location and area of ​​the zero magnetic field region. The coil information determining device can adjust the target current information for each central solenoid coil sequentially, or it can adjust the target current information of multiple central solenoid coils as a whole.

[0102] Step s32: When the area of ​​the zero magnetic field region in the reaction chamber is greater than the target area, update the target current information of multiple central solenoid coils.

[0103] After each adjustment of the target current information, the coil information determining device compares the area of ​​the obtained zero magnetic field region with the set target area. If the area of ​​the zero magnetic field region is larger than the target area, the zero magnetic field region is considered better, and the target current information corresponding to this region is superior. This superior target current information can then replace the original target current information, thus updating the target current information. Step 206 can then be executed based on the updated target current information.

[0104] In one implementation, the target area can also be the area of ​​the zero-magnetic-field region corresponding to the previous target current information. The coil information determining device compares the area of ​​the zero-magnetic-field region obtained after adjusting the target current information with the area of ​​the previous zero-magnetic-field region to filter out zero-magnetic-field regions with smaller areas and their corresponding current information. It can also use the area of ​​the larger zero-magnetic-field region as the new target area. The coil information determining device can perform multiple adjustments within the current range and replace the original target current information with the better target current information obtained after filtering, thus updating the target current information.

[0105] In some implementations, after determining a better target current information within the current range, the current range is redefined using this target current information as the median, and even better target current information is determined within the new current range. That is, steps s31 and s32 can be iteratively executed multiple times to obtain a better zero magnetic field region. The newly determined current range can be narrowed relative to the original current range; for example, the upper and lower bounds of the first current range can be ±20% of the target current information, the second current range is smaller, and the upper and lower bounds of the subsequent current range can be ±10% of the new target current information. After a specified number of current range adjustments and adjustments to the target current information within the current range, the final target current information can be obtained. For example, the specified number of adjustments could be three.

[0106] In this embodiment, the coil information determination device can utilize a global optimization algorithm to optimize the target current information. For example, this global optimization algorithm could be a GA (Genetic Algorithm). The coil determination device performs global optimization using the initially determined target current information as the initial value, which can narrow the optimization range and improve optimization speed and success rate. This global optimization can be achieved using a scoring function, which is calculated based on information from each location in the reaction chamber, scores for each location determined by whether the magnetic field value is less than the target threshold, and a set position weighting function. This position weighting function reflects a preference for the shape of the zero magnetic field region; the higher the position weight, the better the location is expected to form a zero magnetic field region. Based on the scoring function, the score for each current information can be determined to attempt to find the global maximum point of the scoring function, thereby searching for better target current information.

[0107] In this embodiment of the application, after the target current information is determined in step 204, the coil information determining device can also determine the current density of the central solenoid coil based on the target current information and the geometric information of the central solenoid coil (such as radius, width and length), so as to facilitate subsequent adjustments based on the current density.

[0108] In this embodiment, after determining the target current information, the process of further adjusting the information of the central solenoid coil can also utilize a global optimization algorithm. Accordingly, step 206 can include adjusting the information of the central solenoid coil based on the target current information, target conditions, and coil setting conditions of multiple central solenoid coils, using a global optimization algorithm to make the area of ​​the zero magnetic field region in the reaction chamber larger than the target area, thus obtaining the target coil information. For details on this global optimization algorithm, please refer to the aforementioned introduction regarding optimization for target current information.

[0109] In step 206, the position and current value of the central solenoid coil need to be optimized, and certain coil setting conditions must be met, such as the total current being an integer multiple of the set single-turn current, the coil positions not overlapping, and the current density being within a specified range. Based on these conditions, the parameters and scoring method in the scoring function can be adjusted accordingly to add analysis parameters corresponding to these conditions to the scoring function, so that these analysis parameters affect the scores of different coil information. For example, analysis parameters can be set for coil position preferences and current density preferences, and these analysis parameters can be weighted in the process of obtaining the final score. The coil information determination device can iterate this optimization process repeatedly, and after several iterations, a relatively ideal target coil information for the central solenoid coil can be obtained. This target coil information includes the position, number of turns, and connection method of the central solenoid coil.

[0110] The implementation of step 206 will be explained below using several implementation methods for adjusting the information of the central solenoid coil as examples. Any of the following implementation methods can be used individually or in combination.

[0111] In some embodiments, in step 206, the coil information determining device adjusts the geometric information of the central solenoid coil, which includes quantity and position information. The coil information determining device can adjust the quantity and position information of the central solenoid coils by adding or splitting merging or splitting information based on target current information, target conditions, coil setup conditions indicating the spatial distribution requirements of the central solenoid coils, and the relationship between the magnetic flux and current of the central solenoid coils. The target conditions include equal magnetic flux at multiple reference positions and the formation of a zero magnetic field region in the reaction chamber.

[0112] For example, the spatial distribution requirements of the central solenoid coils may include: the overall installation area of ​​the central solenoid, the spacing between adjacent central solenoid coils, and the dimensional differences between different central solenoid coils. The relationship between magnetic flux and current will differ for central solenoid coils located in different positions. When the radius of the central solenoid coil is much smaller than its height, the magnetic flux of the coil is proportional to the axial current density, as is the case with the central solenoid coil in the middle cylinder. When the radius of the central solenoid coil is much larger than its height, the magnetic flux of the coil is proportional to the total current in the coil, as is the case with the central solenoid coils near the upper and lower ends of the reaction chamber.

[0113] Based on this relationship, multiple initially drafted central solenoid coils can be merged or split. For example, the coil information determining device generates merging or splitting information for these multiple central solenoid coils based on this relationship, indicating the specific merging or splitting operation. Merging coils means changing an area where at least two coils were originally set to one coil; splitting coils means changing an area where one coil was originally set to at least two coils. This merging or splitting changes the number and position of the central solenoid coils. This merging or splitting must be performed under the constraints of the coil setting conditions, ensuring that the information of the central solenoid coils obtained after merging or splitting meets these conditions and also satisfies the target conditions.

[0114] In some implementations, in step 206, the coil information determining device adjusts the current information of the central solenoid coil, such as adjusting the current density. The coil information determining device can adjust the cross-sectional width information of multiple central solenoid coils based on target current information, target conditions, and coil setting conditions indicating factors influencing the current density of the central solenoid coils. A certain current density range can also be set, and the adjustment of the current density by the coil information determining device must be within this current density range.

[0115] For example, the coil setup conditions can indicate that the current density of the central solenoid coil is related to the coil height and coil width. When adjusting the current density, it is necessary to avoid changing the coil's self-inductance as much as possible. This coil width is also the cross-sectional width of the coil; please refer to the aforementioned related explanations for details. Since the self-inductance of the central solenoid coil has a relatively small correlation with the radial current density, the coil information determining device can adjust the total ionization density by adjusting the radial current density of the central solenoid coil. This adjustment method can also ensure that the magnetic field distribution remains essentially unchanged. The coil information determining device can adjust the radial current density by adjusting the coil width; for example, the central solenoid coil can be wound several more turns in the circumferential direction during fabrication to ensure a larger coil width in the radial direction. In this embodiment, it is also necessary to ensure that the central solenoid coil can achieve the target conditions based on the adjusted cross-sectional width.

[0116] In some implementations, the coil information determining device in step 206 can adjust the inductive load of the central solenoid coil by adjusting the connection method of the coils. The coil information determining device can determine the self-induced electromotive force (EMF) and mutual inductance EMF of multiple central solenoid coils based on the target current information of multiple central solenoid coils; based on the self-induced EMF and mutual inductance EMF of multiple central solenoid coils, target conditions, and coil setting conditions indicating that the total self-inductance of each group of central solenoid coils is equal, series connection information is added for at least two central solenoid coils to adjust the connection method information of the central solenoid coils.

[0117] The coil information determining device can determine the self-induced electromotive force (EMF) and mutual inductance of each central solenoid coil based on their mutual inductance and self-inductance. The mutual inductance is related to the coil's geometry, size, number of turns, and relative position, while the self-inductance is related to the coil's geometry, size, and number of turns. The self-induced EMF of a series-connected coil is the sum of the self-induced EMF of each coil and twice the mutual inductance, which is also the sum of the elements of the coil mutual inductance matrix for each row and column. Based on this, the coil information determining device can select suitable central solenoid coils for series connection, ensuring that the total self-inductance of each group of series-connected central solenoid coils is equal, thus satisfying the coil setup conditions that limit self-inductance.

[0118] In some embodiments, in step 206, the coil information determining device adjusts the current information and structural parameters of the central solenoid coil. The coil information determining device can adjust the target current information and / or structural parameters of the central solenoid coil based on target current information, target conditions, and coil setting conditions requiring indicated current values ​​for multiple central solenoid coils. The structural parameters include the number of coil turns.

[0119] For example, the coil setting conditions can indicate that the target current of the central solenoid coil must be an integer multiple of the set single-turn current. The coil setting conditions can also indicate the range of current values. The coil information determining device adjusts the target current information or structural parameters such as the number of coil turns of the central solenoid coil, ensuring that the adjusted target current information meets the coil setting conditions and target conditions.

[0120] During or after the adjustment of the central solenoid information in step 206, the coil information determining device displays the adjusted information of the central solenoid coil so that the user can be informed of the current adjustment status. In one embodiment, after determining the final target coil information, the coil information determining device may also display, to the user, a simulation of setting the central solenoid coil based on the target coil information, and a simulation of the nuclear fusion reaction effect based on the target coil information.

[0121] In this embodiment, if a suitable target current information or target coil information cannot be determined after performing the aforementioned steps, the coil information determining device may further consider adjusting the contour information of the reaction chamber. For example, if the target current information is too large, it can be considered that the target current information does not meet the requirements. The coil information determining device may adjust the contour information of the reaction chamber if the target current information of multiple central solenoid coils is greater than the current threshold, and re-execute steps 202 and 204 based on the adjusted contour information of the reaction chamber until the obtained target current information is less than or equal to the current threshold. Then, step 206 can be executed based on this target current information.

[0122] Figure 4 is a flowchart of another method for determining coil information of a nuclear fusion reactor according to an embodiment of this application. Figure 4 shows the overall flow of the coil information determination method. The steps in the method shown in Figure 4 can be referred to in conjunction with the method shown in Figure 2. The steps in this method will not be explained in detail below. As shown in Figure 4, the method includes steps 402 to 428.

[0123] Step 402: Based on the contour information of the reaction chamber and the setting method of the circumferential field coil in the nuclear fusion reactor, determine the setting baseline information of the central solenoid coil.

[0124] Step 404: Based on the tilt of the set baseline, determine the overlap direction information of adjacent central solenoid coils.

[0125] Step 406: Based on the baseline information, overlap direction information, and initial cross-sectional dimensions of the central solenoid coil, obtain the initial position information of multiple central solenoid coils.

[0126] Steps 402 to 406 can be referred to the relevant introduction of steps 2022 to 2026 above, and will not be repeated here.

[0127] Step 408: Based on the initial position information of multiple central solenoid coils, determine the magnetic flux influence parameters and magnetic field influence parameters of each central solenoid coil on each position in the target area, wherein the target area includes the area where each central solenoid coil and the reaction chamber are located.

[0128] Step 408 can be referred to the relevant descriptions of steps s11 and s21 above, and will not be repeated here.

[0129] Step 410: Based on the initial position information of each central solenoid coil, determine a reference position outside the reaction chamber to obtain information on multiple reference positions; wherein, the reference position is located between the center point of each central solenoid coil and the cross-section center point of the reaction chamber.

[0130] Step 410 can be referred to the relevant introduction of step 2042 above, and will not be repeated here.

[0131] Step 412: Based on the magnetic flux influence parameters of each central solenoid coil on each reference position, determine the magnetic flux information of each reference position under the action of multiple central solenoid coils.

[0132] Step 412 can be referred to the relevant introduction of step s12 above, and will not be repeated here.

[0133] Step 414: Determine the reference current information of multiple central solenoid coils when the magnetic flux at each reference position is equal.

[0134] Step 414 can be referred to the relevant introduction of step 2044 above, and will not be repeated here.

[0135] Step 416: Based on the magnetic field influence parameters and the reference current information of multiple central solenoid coils, determine the magnetic field value at each location in the enclosed region.

[0136] Step 416 can be referred to the relevant introduction of step s22 above, and will not be repeated here.

[0137] Step 418: Based on the magnetic field values ​​at each location within the enclosed region, determine whether a zero magnetic field region exists within the enclosed region; wherein, a zero magnetic field region includes multiple adjacent locations where the magnetic field value is less than the target threshold. If a zero magnetic field region exists within the enclosed region, proceed to step 420; if no zero magnetic field region exists within the enclosed region, proceed to step 422.

[0138] Step 418 can be referred to the relevant descriptions of steps 2046 and s23 mentioned above, and will not be repeated here.

[0139] Step 420: Determine the reference current information of multiple central solenoid coils as the target current information. Proceed to step 424.

[0140] Step 420 can be referred to the relevant introduction of step 2046 above, and will not be repeated here.

[0141] Step 422: Adjust multiple reference positions. Afterwards, the coil information determining device re-executes step 412 and subsequent steps based on the adjusted information from the multiple reference positions until a zero magnetic field region exists within the area enclosed by the multiple reference positions.

[0142] Step 424: Adjust the target current information of multiple central solenoid coils within the current range, and determine the information of the zero magnetic field region in the reaction chamber after the target current information is adjusted; wherein, the current range is the range with the target current as the median value.

[0143] Step 424 can be referred to the relevant introduction of step s31 above, and will not be repeated here.

[0144] Step 426: If the area of ​​the zero magnetic field region in the reaction chamber is greater than the target area, update the target current information of multiple central solenoid coils.

[0145] Step 426 can be referred to the relevant introduction of step s32 above, and will not be repeated here.

[0146] Step 428: Based on the target current information, target conditions, and coil setting conditions of multiple central solenoid coils, use a global optimization algorithm to adjust the information of the central solenoid coils so that the area of ​​the zero magnetic field region in the reaction chamber is greater than the target area.

[0147] In step 428, the coil information determining device can also make different information adjustments for the central solenoid coil based on different coil setting conditions. For reference, please refer to the above description of several implementation methods for adjusting the information of the central solenoid coil.

[0148] In this embodiment, by setting an hourglass-shaped central solenoid coil and a correspondingly shaped reaction chamber, the power load can be significantly reduced, the power energy utilization efficiency improved, and the strong-field side space of the reaction chamber relaxed without affecting the magnetic field generated by the central solenoid coil. This also adapts to the requirement of plasma operating in a negative triangular configuration, thereby enhancing the fusion reaction effect. Furthermore, this embodiment optimizes the position, size, and turns ratio of the central solenoid coil, enabling the natural acquisition of the high-quality zero-magnetic-field region required for the startup of the nuclear fusion reactor, without increasing the difficulty of power supply configuration.

[0149] In summary, in the coil information determination method for a nuclear fusion reactor provided in this application embodiment, the inner ring surface of the reaction chamber protrudes towards the central axis of the reaction chamber, and the central solenoid coils are arranged sequentially outside the reaction chamber along the inner ring surface. The radius of the central solenoid coils can be relatively large, and the generated magnetic field can apply more energy to the plasma in the reaction chamber, which is beneficial to improving the fusion reaction effect of the plasma. Furthermore, based on the contour information of the reaction chamber, the initial position information of the central solenoid coils is obtained, and the target current information of the central solenoid coils that can achieve the target conditions at the initial position is determined. If the central solenoid coils operate with the target current information at the initial position, the magnetic flux at multiple reference positions outside the reaction chamber can be equalized, forming a zero magnetic field region. Then, based on the target current information, target conditions, and coil setting conditions, the information of the central solenoid coils is adjusted to obtain the target coil information, so that the central solenoid coils can achieve the target conditions and coil setting conditions when set with the target coil information. This allows for the determination of a suitable configuration for the central solenoid coil, ensuring that the configuration meets the operational requirements of the nuclear fusion reactor and guarantees the effectiveness of the nuclear fusion reaction.

[0150] Corresponding to the above method embodiments, this application also provides an embodiment of a coil information determination device for a nuclear fusion reactor, wherein the nuclear fusion reactor is the nuclear fusion reactor 10 shown in FIG1. ​​FIG5 is a schematic structural diagram of a coil information determination device for a nuclear fusion reactor provided in an embodiment of this application. As shown in FIG5, the device includes:

[0151] The acquisition module 502 is used to acquire the initial position information of multiple central solenoid coils based on the contour information of the reaction chamber;

[0152] The first determining module 504 is used to determine the target current information of multiple central solenoid coils that can achieve the target conditions at the initial position; wherein, the target conditions include equal magnetic flux at multiple reference positions and the formation of a zero magnetic field region in the reaction chamber;

[0153] The first adjustment module 506 is used to adjust the information of the central solenoid coil based on the target current information, target conditions and coil setting conditions of multiple central solenoid coils to obtain the target coil information.

[0154] In one embodiment, the acquisition module 502 is used for:

[0155] Based on the contour information of the reaction chamber and the arrangement of the circumferential field coils in the nuclear fusion reactor, the baseline information for the central solenoid coil is determined.

[0156] Based on the degree of inclination of the set baseline, the overlap direction information of adjacent central solenoid coils is determined;

[0157] Based on the baseline information, overlap direction information, and initial cross-sectional dimensions of the central solenoid coil, the initial position information of multiple central solenoid coils is obtained.

[0158] In one embodiment, the first determining module 504 is used to:

[0159] Based on the initial position information of each central solenoid coil, a reference position is determined in the reaction chamber, resulting in information on multiple reference positions; among them, one reference position is located between each central solenoid coil and the center point of the cross-section of the reaction chamber.

[0160] Given that the magnetic flux at each reference position is equal, the reference current information of multiple central solenoid coils;

[0161] When a zero magnetic field region exists within the area enclosed by the lines connecting multiple reference positions, based on the reference current information of multiple central solenoid coils, the reference current information of the multiple central solenoid coils is determined as the target current information; wherein, the zero magnetic field region includes multiple adjacent positions where the magnetic field value is less than the target threshold.

[0162] In one embodiment, the coil information determining device further includes:

[0163] The second determining module is used to determine the magnetic flux influence parameters of each central solenoid coil on each position in the target area based on the initial position information of the multiple central solenoid coils before determining the reference current information of the multiple central solenoid coils, provided that the magnetic flux at each reference position is equal. The target area includes each central solenoid coil and the area where the reaction chamber is located.

[0164] The third determining module is used to determine the magnetic flux information of each reference position under the action of the multiple central solenoid coils based on the magnetic flux influence parameters of each central solenoid coil on each reference position.

[0165] In one embodiment, the coil information determining device further includes:

[0166] The fourth determining module is used to determine the magnetic field influence parameters of each central solenoid coil on each position in the area enclosed by the line connecting the multiple reference positions, based on the initial position information of the multiple central solenoid coils, before determining the reference current information of the multiple central solenoid coils as the target current information, when there is a zero magnetic field region in the area enclosed by the line connecting the multiple reference positions based on the reference current information of the multiple central solenoid coils.

[0167] The fifth determining module is used to determine the magnetic field value at each location in the enclosed region based on the magnetic field influence parameters and the reference current information of the plurality of central solenoid coils.

[0168] The judgment module is used to determine whether there is a zero magnetic field region in the enclosed region based on the magnetic field value at each location in the enclosed region.

[0169] In one embodiment, the coil information determining device further includes:

[0170] The second adjustment module is used to adjust the multiple reference positions when there is no zero magnetic field region in the area enclosed by the lines connecting the multiple reference positions, and to re-execute the step of determining the reference current information of the multiple central solenoid coils when the magnetic flux of each reference position is equal, based on the information of the adjusted multiple reference positions, until a zero magnetic field region exists in the enclosed area based on the reference current information of the multiple central solenoid coils.

[0171] In one embodiment, the coil information determining device further includes:

[0172] The third adjustment module is used to adjust the target current information of multiple central solenoid coils within the current range after determining the target current information of multiple central solenoid coils that can achieve the target conditions at the initial position, and to determine the information of the zero magnetic field region in the reaction chamber after the target current information is adjusted; wherein, the current range is the range with the target current as the median value.

[0173] The update module is used to update the target current information of multiple central solenoid coils when the area of ​​the zero magnetic field region in the reaction chamber is larger than the target area.

[0174] In one embodiment, the first adjustment module 506 is used to:

[0175] Based on the target current information, target conditions, and coil setting conditions of multiple central solenoid coils, a global optimization algorithm is used to adjust the information of the central solenoid coils so that the area of ​​the zero magnetic field region in the reaction chamber is greater than the target area.

[0176] In one embodiment, the first adjustment module 506 is used to:

[0177] Based on the target current information of the multiple central solenoid coils, the target conditions, the coil setting conditions indicating the spatial distribution requirements of the central solenoid coils, and the relationship between the magnetic flux and current of the central solenoid coils, information on merging or splitting is added for the multiple central solenoid coils to adjust the quantity and position information of the central solenoid coils.

[0178] In one embodiment, the first adjustment module 506 is used to:

[0179] Based on the target current information of the plurality of central solenoid coils, the target conditions, and the coil setting conditions indicating the factors affecting the current density of the central solenoid coils, the cross-sectional width information of the plurality of central solenoid coils is adjusted.

[0180] In one embodiment, the first adjustment module 506 is used to:

[0181] Based on the target current information of the plurality of central solenoid coils, the self-induced electromotive force information and mutual inductance electromotive force information of the plurality of central solenoid coils are determined.

[0182] Based on the self-induced electromotive force information and mutual inductance electromotive force information of the plurality of central solenoid coils, the target condition, and the coil setting condition indicating that the total self-inductance of each group of central solenoid coils is equal, series connection information is added for at least two central solenoid coils to adjust the connection method information of the central solenoid coils.

[0183] In one embodiment, the first adjustment module 506 is used to:

[0184] Based on the target current information of the plurality of central solenoid coils, the target conditions, and the coil setting conditions for the indicated current value requirements, the target current information and / or structural parameters of the central solenoid coils are adjusted, wherein the structural parameters include the number of coil turns.

[0185] In one embodiment, the coil information determining device further includes:

[0186] The fourth adjustment module is used to adjust the contour information of the reaction chamber when the target current information of multiple central solenoid coils is greater than the current threshold, and to re-execute the steps of obtaining the initial position information of multiple central solenoid coils and subsequent steps based on the adjusted contour information of the reaction chamber, until the obtained target current information is less than or equal to the current threshold.

[0187] In summary, the coil information determination device for a nuclear fusion reactor provided in this application obtains the initial position information of the central solenoid coil based on the contour information of the reaction chamber, and determines the target current information of the central solenoid coil that can achieve the target conditions at the initial position. If the central solenoid coil operates with the target current information at this initial position, the magnetic flux at multiple reference positions outside the reaction chamber can be equalized, forming a zero magnetic field region. Furthermore, based on this target current information, target conditions, and coil setting conditions, the information of the central solenoid coil is adjusted to obtain the target coil information, enabling the central solenoid coil to achieve the target conditions and coil setting conditions when set with the target coil information. This allows for the determination of a suitable setting method for the central solenoid coil, ensuring that the setting of the central solenoid coil meets the operational requirements of the nuclear fusion reactor and guarantees the nuclear fusion reaction effect of the nuclear fusion reactor.

[0188] The various embodiments in this application are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. For the secure two-party inference device based on fully homomorphic encryption, relevant details can be found in the description of the embodiment of the coil information determination method for a nuclear fusion reactor. For the inference model generation device, relevant details can be found in the description of the embodiment of the coil information determination method for a nuclear fusion reactor.

[0189] Figure 6 is a structural block diagram of a computing device according to an embodiment of this application. The components of the computing device 600 include, but are not limited to, a memory 610 and a processor 620. The processor 620 is connected to the memory 610 via a bus 630, and a database 650 is used to store data.

[0190] The computing device 600 also includes an access device 640, which enables the computing device 600 to communicate via one or more networks 660. Examples of these networks include Public Switched Telephone Network (PSTN), Local Area Network (LAN), Wide Area Network (WAN), Personal Area Network (PAN), or combinations of communication networks such as the Internet. The access device 640 may include one or more of any type of wired or wireless network interface (e.g., a network interface controller (NIC)), such as an IEEE 802.11 Wireless Local Area Network (WLAN) interface, a Wi-MAX (Worldwide Interoperability for Microwave Access) interface, an Ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a Bluetooth interface, or a Near Field Communication (NFC) interface.

[0191] In one embodiment of this application, the aforementioned components of the computing device 600, as well as other components not shown in FIG. 6, may be interconnected, for example, via a bus. It should be understood that the computing device structural block diagram shown in FIG. 6 is merely for illustrative purposes and is not intended to limit the scope of this application. Those skilled in the art can add or replace other components as needed.

[0192] The computing device 600 can be any type of stationary or mobile computing device, including mobile computers or mobile computing devices (e.g., tablet computers, personal digital assistants, laptop computers, notebook computers, netbooks, etc.), mobile phones (e.g., smartphones), wearable computing devices (e.g., smartwatches, smart glasses, etc.) or other types of mobile devices, or stationary computing devices such as desktop computers or personal computers (PCs). The computing device 600 can also be a mobile or stationary server.

[0193] The processor 620 is used to execute computer programs / instructions, which, when executed by the processor, implement the steps in the above method, as shown in Figure 2 or Figure 4.

[0194] For the computing device embodiment, since it is basically similar to the coil information determination method embodiment of the nuclear fusion reactor, the description is relatively simple, and relevant parts can be referred to in the description of the method embodiment.

[0195] One embodiment of this application also provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the steps of the above-described method for determining coil information based on a nuclear fusion reactor. The computer instructions include computer program code, which may be in the form of source code, object code, executable file, or some intermediate form. The computer-readable storage medium may include any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc. It should be noted that the content included in the computer-readable storage medium may be appropriately added to or subtracted according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable storage medium may not include electrical carrier signals and telecommunication signals.

[0196] One embodiment of this application also provides a computer program product, including a computer program / instructions that, when executed in a processor, implement the steps of the above-described method for determining coil information of a nuclear fusion reactor.

[0197] For the computer-readable storage medium embodiment and the computer program product embodiment, since they are basically similar to the coil information determination method embodiment of the nuclear fusion reactor, the description is relatively simple. For relevant details, please refer to the description of the coil information determination method embodiment based on the nuclear fusion reactor.

[0198] The foregoing has described specific embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired results. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0199] Those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application. In the above embodiments, the descriptions of each embodiment have different focuses, and for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0200] The preferred embodiments disclosed above are merely illustrative of this application. The optional embodiments do not exhaustively describe all details, nor do they limit this application to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this application. These embodiments are selected and specifically described in this application to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to better understand and utilize this application.

Claims

1. A method of determining coil information of a nuclear fusion reaction apparatus, wherein, The nuclear fusion reaction device comprises a reaction chamber and a plurality of central solenoid coils; the reaction chamber is annular, and an inner annular surface of the reaction chamber is convex towards a central axis of the reaction chamber; the plurality of central solenoid coils are arranged in sequence along the inner annular surface of the reaction chamber outside the reaction chamber; and the method comprises: obtaining initial position information of the plurality of central solenoid coils based on profile information of the reaction chamber; determining target current information of the plurality of central solenoid coils located at the initial positions to achieve a target condition; wherein the target condition comprises equal magnetic fluxes at a plurality of reference positions, and a zero magnetic field region formed in the reaction chamber; and adjusting information of the central solenoid coils based on the target current information of the plurality of central solenoid coils, the target condition and coil setting conditions to obtain target coil information.

2. The method of claim 1, wherein, The method further comprises: determining setting baseline information of the central solenoid coils based on the profile information of the reaction chamber and a setting mode of toroidal field coils in the nuclear fusion reaction device; determining overlapping direction information of adjacent central solenoid coils based on a tilt degree of the setting baseline; and obtaining initial position information of the plurality of central solenoid coils based on the setting baseline information, the overlapping direction information and initial cross-sectional dimensions of the central solenoid coils.

3. The method of claim 1, wherein, The method further comprises: determining one reference position outside the reaction chamber based on the initial position information of each central solenoid coil to obtain information of a plurality of reference positions; wherein the one reference position is located between the each central solenoid coil and a cross-sectional center point of the reaction chamber; determining reference current information of the plurality of central solenoid coils in a case that magnetic fluxes at the reference positions are equal; in a case that a surrounding region of a connecting line of the plurality of reference positions has a zero magnetic field region based on the reference current information of the plurality of central solenoid coils, determining the reference current information of the plurality of central solenoid coils as the target current information; wherein the zero magnetic field region comprises a plurality of adjacent positions with magnetic field values less than a target threshold; and in a case that the surrounding region of the connecting line of the plurality of reference positions does not have the zero magnetic field region, adjusting the plurality of reference positions and re-executing the step of determining the reference current information of the plurality of central solenoid coils in the case that the magnetic fluxes at the reference positions are equal based on information of the adjusted plurality of reference positions until the surrounding region has the zero magnetic field region based on the reference current information of the plurality of central solenoid coils.

4. The method of claim 3, wherein, The method further comprises: before the step of determining the reference current information of the plurality of central solenoid coils in the case that the magnetic fluxes at the reference positions are equal, determining, based on the initial position information of the plurality of center solenoid coils, a magnetic flux influence parameter of each center solenoid coil on each position in a target region, wherein the target region includes the each center solenoid coil and a region where the reaction chamber is located; and determining, based on the magnetic flux influence parameter of each center solenoid coil on each reference position, magnetic flux information of each reference position under the action of the plurality of center solenoid coils.

5. The method of claim 3, wherein, Before the target current information of the plurality of center solenoid coils is determined as the target current information based on the reference current information of the plurality of center solenoid coils in the case where a zero magnetic field region exists in the enclosed region of the connection line of the plurality of reference positions, the method further comprises: determining, based on the initial position information of the plurality of center solenoid coils, a magnetic field influence parameter of each center solenoid coil on each position in the enclosed region of the connection line of the plurality of reference positions; determining, based on the magnetic field influence parameter and the reference current information of the plurality of center solenoid coils, a magnetic field value at each position in the enclosed region; and judging whether a zero magnetic field region exists in the enclosed region based on the magnetic field value at each position in the enclosed region.

6. The method according to any one of claims 1 to 5, wherein, After the target current information of the plurality of center solenoid coils that can achieve the target condition at the initial position is determined, the method further comprises: adjusting the target current information of the plurality of center solenoid coils in a current range, and determining information of a zero magnetic field region in the reaction chamber after the target current information is adjusted; wherein the current range is a range with the target current as a median value; and in the case where the area of the zero magnetic field region in the reaction chamber is greater than a target area, updating the target current information of the plurality of center solenoid coils.

7. The method according to any one of claims 1 to 5, wherein, The adjusting the information of the center solenoid coils based on the target current information of the plurality of center solenoid coils, the target condition and the coil setting condition comprises: based on the target current information of the plurality of center solenoid coils, the target condition and the coil setting condition, adjusting the information of the center solenoid coils by using a global optimization algorithm, so that the area of the zero magnetic field region in the reaction chamber is greater than the target area.

8. The method according to any one of claims 1 to 5, wherein, The adjusting the information of the center solenoid coils based on the target current information of the plurality of center solenoid coils, the target condition and the coil setting condition comprises: based on the target current information of the plurality of center solenoid coils, the target condition, the coil setting condition indicating the spatial distribution requirement of the center solenoid coils, and the relationship between the magnetic flux and the current of the center solenoid coils, adding merging or splitting information for the plurality of center solenoid coils, so as to adjust the number information and the position information of the center solenoid coils; and / or based on the target current information of the plurality of center solenoid coils, the target condition, and the coil setting condition indicating the current density influencing factor of the center solenoid coils, adjusting the cross-sectional width information of the plurality of center solenoid coils; and / or determining self-induction electromotive force information and mutual-induction electromotive force information of the plurality of central solenoid coils based on the target current information of the plurality of central solenoid coils; adding series information to at least two central solenoid coils based on the self-induction electromotive force information and the mutual-induction electromotive force information of the plurality of central solenoid coils, the target condition, and a coil setting condition indicating that total self-induction of each group of central solenoid coils is equal, to adjust connection mode information of the central solenoid coils; and / or adjusting target current information and / or structural parameters of the central solenoid coils based on the target current information of the plurality of central solenoid coils, the target condition, and a coil setting condition indicating current value requirements, wherein the structural parameters include the number of turns of the coils.

9. The method of any one of claims 1 to 5, further comprising: in a case where the target current information of the plurality of central solenoid coils is greater than a current threshold, adjusting profile information of the reaction chamber, and re-executing the step of obtaining initial position information of the plurality of central solenoid coils and the subsequent steps based on the adjusted profile information of the reaction chamber until the obtained target current information is less than or equal to the current threshold.

10. A nuclear fusion reaction device, comprising: a reaction chamber of a plasma, wherein the reaction chamber is configured in a ring shape, and an inner ring surface of the reaction chamber is convex toward a central axis of the reaction chamber; and a plurality of central solenoid coils, wherein the plurality of central solenoid coils are configured to be arranged in the reaction chamber in sequence along the inner ring surface of the reaction chamber, and are set according to target coil information determined by the method of any one of claims 1 to 9.

11. A coil information determining apparatus of a nuclear fusion reaction apparatus, wherein The nuclear fusion reaction device comprises a reaction chamber and a plurality of central solenoid coils; the reaction chamber is in a ring shape, and an inner ring surface of the reaction chamber is convex toward a central axis of the reaction chamber; the plurality of central solenoid coils are arranged in the reaction chamber in sequence along the inner ring surface of the reaction chamber; The coil information determination device comprises: an obtaining module configured to obtain initial position information of the plurality of central solenoid coils based on profile information of the reaction chamber; a first determining module configured to determine target current information of the plurality of central solenoid coils located at the initial positions to achieve a target condition; wherein the target condition includes equal magnetic flux at a plurality of reference positions, and a zero magnetic field region formed in the reaction chamber; and a first adjusting module configured to adjust information of the central solenoid coils based on the target current information of the plurality of central solenoid coils, the target condition, and a coil setting condition, to obtain target coil information.

12. A computing device, comprising: a memory configured to store computer programs / instructions; and a processor configured to execute the computer programs / instructions, which, when executed by the processor, implement the method of any one of claims 1 to 9.

13. A computer-readable storage medium storing computer programs / instructions, which, when executed by a processor, implement the method of any one of claims 1 to 9.

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