Neutron source based on FRC linear magnetic confinement nuclear fusion device

Abstract

The invention discloses a neutron source based on an FRC linear magnetic confinement nuclear fusion device, and relates to the technical field of fusion devices. The neutron source comprises a vacuum chamber for providing a vacuum environment for fusion reaction; the magnet system is arranged outside the vacuum chamber and is used for ionizing gas in the vacuum chamber and generating fusion reaction; the neutron extraction system is arranged in the fusion reaction generation area of the vacuum chamber and is used for extracting epithermal neutrons; the neutron lead-out system comprises a neutron lead-out channel, a shielding and reflecting device and a filter, the shielding and reflecting device is arranged outside the lead-out channel and used for shielding and reflecting neutrons, and the filter is arranged in the neutron lead-out channel and used for filtering fast neutrons, thermal neutrons and photons; the neutron source provided by the invention has the advantages of higher neutron yield, simple and compact structure, effectively reduced overall device volume, low construction and maintenance cost and small nuclear safety prevention and control pressure, and can be used in various fields of medical treatment, scientific research, military industry and the like.

Description

Technical Field

[0001] This invention relates to the field of nuclear fusion device technology, and specifically to a neutron source based on an FRC linear magnetic confinement nuclear fusion device. Background Technology

[0002] Nuclear fusion technology utilizes light atomic nuclei (such as deuterium and tritium) to fuse into heavy atomic nuclei (such as helium) under ultra-high temperatures (≥100 million °C) and high specific pressures, releasing enormous energy. Deuterium can be extracted from seawater (each liter of seawater contains 0.03 grams of deuterium, and the fusion energy is equivalent to 300 liters of gasoline). Tritium is generated through the reaction of neutrons with lithium. The product of nuclear fusion is inert helium gas, which produces no greenhouse gases or long-lived nuclear waste, and the fuel resources can supply humanity for millions of years.

[0003] Nuclear fusion devices use deuterium (tritium or other metals can also be used). 3 He (He) is a fusion fuel that can undergo primary and secondary reactions under certain conditions. Both primary and secondary reactions can produce neutrons. In fusion power generation applications, these neutrons react with the first wall material to generate a large amount of heat, thereby driving the power generation device. In addition, the fusion device can also be used as a neutron source. By extracting neutrons and modulating their energy and shape, they can be used in neutron therapy, isotope manufacturing, neutron imaging, and other applications, possessing enormous scientific, economic, and social value.

[0004] Existing neutron sources can generally be divided into three categories: 1. Radioactive Neutron Source: Neutrons are produced by bombarding a target nucleus (such as beryllium) with alpha particles or gamma rays released from the decay of radioactive isotopes. This type of neutron source has a simple structure, is easy to miniaturize and carry, requires no external energy input, and is convenient to operate; however, its neutron yield is low (≤10). 7 (n / s), which is difficult to meet the requirements of high-precision applications; 2. Reactor Neutron Source: This type of neutron source continuously produces a high flux of neutrons through a nuclear fission chain reaction; its neutron flux is extremely high (ILL can reach 10^10). 15 n / cm 2 ( / s), suitable for high-intensity experiments, with a wide energy spectrum range, supporting multi-type neutron scattering research, but it is bulky, requires nuclear fuel, and has complex radioactive waste disposal and high operation and maintenance costs; 3. Accelerator neutron sources (including spallation neutron sources): These sources accelerate protons to high speeds to bombard heavy metal targets (such as tungsten or mercury), releasing neutrons through spallation reactions. These neutron sources offer high pulse flux, good safety, and flexible energy control, but... Construction and operation costs are very high (e.g., CSNS investment exceeds 2 billion yuan), the technology is highly complex, and it requires the support of large-scale accelerator facilities. Summary of the Invention

[0005] This invention aims to address the technical problems of existing neutron sources, such as low neutron yield, large size, complex structure, and high construction and maintenance costs. The goal is to provide a neutron source based on an FRC linear magnetic confinement fusion device. This source extracts neutrons through a neutron extraction channel and filters them to obtain neutrons of the target energy. It boasts a high neutron yield, eliminates the need for complex nuclear waste disposal, has a simple and compact structure, effectively reduces the overall device size, lowers construction and maintenance costs, and reduces nuclear safety control pressure. It can be used in various fields such as medical treatment, scientific research, and military applications.

[0006] The present invention is achieved through the following technical solution.

[0007] A neutron source based on an FRC linear magnetic confinement nuclear fusion device includes: The vacuum chamber provides a vacuum environment for the fusion reaction; The magnet system, located outside the vacuum chamber, is used to ionize the gas inside the vacuum chamber and induce a fusion reaction. The neutron extraction system, located in the fusion reaction region of the vacuum chamber, is used to extract superthermal neutrons; The neutron extraction system includes a neutron extraction channel, a shielding and reflection device, and a filter. The shielding and reflection device is located outside the extraction channel to shield and reflect neutrons. The filter is located inside the neutron extraction channel to filter out fast neutrons, thermal neutrons, and photons.

[0008] This invention proposes a neutron source based on a linear magnetic confinement nuclear fusion device (FRC). The FRC achieves fusion temperature conditions through collisional magnetic compression, thereby generating neutrons through a fusion reaction. Neutrons are extracted by setting up a neutron extraction channel, and fast neutrons, thermal neutrons, and photons are filtered out by a filter. After filtration, ultrathermal neutrons are obtained, which can be used in various fields such as medicine, scientific research, and military industry.

[0009] Compared to existing radioactive neutron sources, reactor neutron sources, and accelerator neutron sources, the neutron source of this invention has a higher neutron yield (>10). 14 n / cm 2 Using readily available deuterium as fuel, it does not require complex nuclear waste disposal, has a simple and compact structure, effectively reduces the overall size of the device, has low construction and maintenance costs, and reduces nuclear safety control pressure, making it more valuable for application.

[0010] Furthermore, the filter comprises a high-energy neutron filter, a thermal neutron filter, and a gamma photon filter arranged sequentially along the neutron extraction channel. Neutrons diffuse outward from the extraction channel in the form of a neutron beam, first encountering the high-energy neutron filter which filters out fast neutrons (0.5 MeV-10 MeV), and then passing through the thermal neutron filter which filters out most of the thermal neutrons (approximately 0.025 eV). The thermal neutron filter can be made of...6 Li material, after passing through a gamma photon filter, filters out most of the photons, leaving mostly superthermal neutrons (1-10 eV). These neutron beams can then be used in various fields such as medicine, scientific research, and military, for example, neutron therapy for BNCT.

[0011] Furthermore, a moderator is disposed between the high-energy neutron filter and the thermal neutron filter. The moderator further slows down the neutrons, reducing their energy. The moderator can be made of an fluorine-containing material.

[0012] Furthermore, the shielding and reflection device includes a shielding body and a reflector. The reflector is wrapped around the outside of the lead-out channel, and the shielding body is wrapped around the outside of the reflector. The shielding body also wraps around the outside of the compression zone of the vacuum chamber. The shielding layer may be made of Pb-containing or hydrogen-rich material.

[0013] Furthermore, a beam aperture is provided at the end of the neutron extraction channel, and a collimator is provided in the beam aperture to change the size of the beam aperture. The collimator can move under the control of the control system to change the size of the beam aperture, thereby obtaining the required target size of the neutron beam diameter.

[0014] Furthermore, the vacuum chamber includes a compression zone, an acceleration zone, a formation zone, and chamber ends connected sequentially from the center to both sides. It should be noted that the neutron source of the FRC linear magnetic confinement fusion device of the present invention is centrally symmetrically arranged, with the compression zone of the vacuum chamber located in the center, the acceleration zones located on both sides of the compression zone, the formation zones located on both sides of the acceleration zone, and the chamber ends located on both sides of the formation zone. The chamber ends are made of stainless steel, while the formation zone, acceleration zone, and compression zone are made of quartz glass. The connections between each region are sealed with O-rings, and the interior of the vacuum chamber is in a high vacuum state (~10⁻⁶ ppm). -6 The chamber end, formation zone, and compression zone are cylindrical, while the acceleration zone is cylindrical, conical, or even stepped.

[0015] Furthermore, divertors can be installed at the chamber end, the transition zone of the acceleration zone and the compression zone to remove impurities after the fusion reaction.

[0016] Furthermore, the magnet system includes a forming region coil, an accelerating region coil, and a compression region coil. The forming region coil is located outside the forming region of the vacuum chamber and is arranged coaxially with the forming region. The accelerating region coil is located outside the accelerating region of the vacuum chamber and is arranged coaxially with the accelerating region. The compression region coil is located outside the compression region of the vacuum chamber and is arranged coaxially with the compression region. The forming region coil, accelerating region coil, and compression region coil can be a single set of coils of the same diameter, or two or even three sets of coils of different diameters. Since the compression region of the vacuum chamber is surrounded by a shield, the compression region coil can be located inside or outside the shield, or coils of different diameters can be arranged with some inside and some outside.

[0017] Furthermore, transition coils (scientifically known as transition coils) are provided between the forming zone coil and the accelerating zone coil, and between the accelerating zone coil and the compression zone coil.

[0018] Furthermore, the neutron source of the present invention also includes a power supply system for providing pulsed power to the magnet system. The coil system of the present invention is powered by multiple power supply modules of the power supply system, which serve as pulsed power supplies and are characterized by employing a capacitor charging and discharging mode based on an RLC circuit.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects.

[0020] 1. This invention proposes a neutron source based on a linear magnetic confinement nuclear fusion device (FRC). The FRC achieves the fusion temperature conditions through collisional magnetic compression, thereby generating neutrons through a fusion reaction. Neutrons are extracted by setting up a neutron extraction channel, and fast neutrons, thermal neutrons, and photons are filtered out by a filter. After filtration, ultrathermal neutrons are obtained, which can be used in various fields such as medical treatment, scientific research, and military industry.

[0021] 2. Compared with existing radioactive neutron sources, reactor neutron sources and accelerator neutron sources, the neutron source of the present invention has a higher neutron yield, uses readily available deuterium as fuel, does not require complex nuclear waste disposal, has a simple and compact structure, effectively reduces the overall device size, has low construction and maintenance costs, and reduces nuclear safety control pressure, making it more valuable for application. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1This is a schematic diagram of a neutron source based on the FRC linear magnetic confinement nuclear fusion device of the present invention; Figure 2 This is a schematic diagram of another structure of the neutron source based on the FRC linear magnetic confinement nuclear fusion device of the present invention; Figure 3 This is a schematic diagram of the neutron extraction system of the neutron source based on the FRC linear magnetic confinement nuclear fusion device of the present invention.

[0023] The attached diagram shows the markings and corresponding component names: 1-Channel end, 2-Forming region, 3-Accelerating region, 4-Compression region, 5-Diverter, 6-Forming region coil, 7-Transition coil, 8-Accelerating region coil, 9-Compression region coil, 10-Neutron extraction channel, 11-Shielding body, 12-Reflector, 13-High-energy neutron filter, 14-Moderator, 15-Thermal neutron filter, 16-Gamma photon filter, 17-Collimator. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0025] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, circuits, materials, or methods have not been specifically described in order to avoid obscuring the invention.

[0026] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] In the description of this invention, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0028] Meanwhile, the terms "set up," "assemble," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] Example 1 A neutron source based on an FRC linear magnetic confinement nuclear fusion device, such as Figure 1-3 Shown, including: The vacuum chamber provides a vacuum environment for the fusion reaction; The magnet system, located outside the vacuum chamber, is used to ionize the gas inside the vacuum chamber and induce a fusion reaction. The neutron extraction system, located in the fusion reaction region of the vacuum chamber, is used to extract superthermal neutrons; The neutron extraction system includes a neutron extraction channel 10, a shielding and reflection device, and a filter. The shielding and reflection device is located outside the extraction channel to shield and reflect neutrons. The neutron extraction channel 10 is equipped with a filter to filter out fast neutrons, thermal neutrons, and photons.

[0030] This invention proposes a neutron source based on a linear magnetic confinement nuclear fusion device (FRC). The FRC achieves the fusion temperature conditions through collisional magnetic compression, thereby generating neutrons through a fusion reaction. Neutrons are extracted by setting a neutron extraction channel 10, and fast neutrons, thermal neutrons, and photons are filtered out by a filter. After filtration, ultrathermal neutrons are obtained, which can be used in various fields such as medical treatment, scientific research, and military industry.

[0031] Compared with existing radioactive neutron sources, reactor neutron sources, and accelerator neutron sources, the neutron source of this invention has a higher neutron yield, uses readily available deuterium as fuel, does not require complex nuclear waste disposal, has a simple and compact structure, effectively reduces the overall device size, has low construction and maintenance costs, and reduces nuclear safety control pressure, making it more valuable for application.

[0032] like Figure 1 As shown, one neutron extraction channel 10 can be set, such as... Figure 2As shown, the neutron extraction channels 10 can also be configured as two opposite channels, which can output neutron beams to both sides horizontally, thereby increasing the number of neutrons extracted and their utilization rate.

[0033] like Figure 3 As shown, the filter includes a high-energy neutron filter 13, a thermal neutron filter 15, and a gamma photon filter 16 arranged sequentially along the neutron extraction channel 10. Neutrons diffuse outward from the extraction channel in the form of a neutron beam. First, they encounter the high-energy neutron filter 13, which filters out fast neutrons (0.5 MeV-10 MeV). Then, they pass through the thermal neutron filter 15, which filters out most of the thermal neutrons (approximately 0.025 eV). The thermal neutron filter 15 can be made of materials containing... 6 The Li material is then passed through a gamma photon filter 16 to filter out most of the photons, leaving mostly superthermal neutrons (1-10 eV). These neutron beams can then be used in various fields such as medicine, scientific research, and military applications, for example, neutron therapy for BNCT.

[0034] In a preferred embodiment, a moderator 14 is further disposed between the high-energy neutron filter 13 and the thermal neutron filter 15. The moderator 14 further slows down the neutrons and reduces their energy. The moderator 14 may be made of an fluorine-containing material.

[0035] like Figure 1 , 2 As shown, the shielding and reflection device includes a shielding body 11 and a reflector 12. The reflector 12 is wrapped around the outside of the lead-out channel, and the shielding body 11 is wrapped around the outside of the reflector 12. The shielding body 11 also wraps around the outside of the compression zone 4 of the vacuum chamber. The shielding layer can be made of Pb-containing or hydrogen-rich materials.

[0036] like Figure 1-3 As shown, a beam aperture is provided at the end of the neutron extraction channel 10. A collimator 17 is provided in the beam aperture to change the size of the beam aperture. The collimator 17 can move under the control of the control system to change the size of the beam aperture, thereby obtaining the required target size of the neutron beam diameter.

[0037] like Figure 1 , 2 As shown, the vacuum chamber includes a compression zone 4, an acceleration zone 3, a formation zone 2, and chamber end 1 connected sequentially from the center to both sides. It should be noted that the neutron source of the FRC linear magnetic confinement fusion device of this invention is centrally symmetrically arranged, with the compression zone 4 of the vacuum chamber in the center. The acceleration zone 3 is located on both sides of the compression zone 4, the formation zone 2 is located on both sides of the acceleration zone 3, and the chamber end 1 is located on both sides of the formation zone 2. The chamber end 1 is made of stainless steel, while the formation zone 2, acceleration zone 3, and compression zone 4 are made of quartz glass. The connections between each region are sealed with O-rings, and the interior of the vacuum chamber is in a high vacuum state (~10⁻⁶ ppm). -6The chamber end 1, the forming zone 2 and the compression zone 4 are cylindrical, while the acceleration zone 3 is cylindrical, conical or even stepped.

[0038] In a preferred embodiment, divertors 5 can be provided in the transition zones of the chamber end 1, the acceleration zone 3, and the compression zone 4 to remove impurities after the fusion reaction. They can be provided simultaneously or only one of them can be provided.

[0039] like Figure 1 , 2 As shown, the magnet system includes a forming region coil 6, an acceleration region coil 8, and a compression region coil 9. The forming region coil 6 is located outside the forming region 2 of the vacuum chamber and is arranged coaxially with the forming region 2. The acceleration region coil 8 is located outside the acceleration region 3 of the vacuum chamber and is arranged coaxially with the acceleration region 3. The compression region coil 9 is located outside the compression region 4 of the vacuum chamber and is arranged coaxially with the compression region 4.

[0040] Among them, the forming zone coil 6, the acceleration zone coil 8 and the compression zone coil 9 can be a group of coils with the same diameter, or two or even three groups of coils with different diameters. Since the compression zone 4 of the vacuum chamber is wrapped with a shield 11, the compression zone coil 9 can be located inside or outside the shield 11, or coils with different diameters can be set with some inside and some outside.

[0041] In a preferred embodiment, a transition coil 7 (scientific name: transition coil) is also provided between the forming region coil 6 and the acceleration region coil 8, and between the acceleration region coil 8 and the compression region coil 9.

[0042] Furthermore, the neutron source of the present invention also includes a diagnostic measurement system, a control system, and a power supply system. The diagnostic measurement system is used to monitor the operating status and perform related measurements, providing comprehensive support for operation, monitoring, data analysis, and safety. The control system manages and optimizes the operation of the entire fusion device through precise operation and real-time feedback adjustment. The power supply system is used to provide pulse power to the magnet system. The coil system of the present invention is powered by multiple power supply modules of the power supply system. These power supply modules, as pulse power supplies, are characterized by adopting a capacitor charging and discharging mode based on RLC circuits.

[0043] Since the reaction principle of the FRC linear magnetic confinement nuclear fusion device of this invention is existing technology, this invention will only provide a brief description of it. The working principle of this invention is as follows: The rapid change in the magnitude and direction of the current supplied by the forming zone coil 6 generates an extremely high electric field within the vacuum chamber, causing the gas injected into the forming zone 2 of the vacuum chamber to ionize and form plasma. Simultaneously, due to the axial magnetic field gradient, the plasma is ejected into the acceleration zone 3 of the vacuum chamber. Upon entering the acceleration zone 3, the magnetic field of the acceleration zone coil 8 is set to exert an axial compression effect on the plasma, causing it to accelerate towards the compression zone 4 of the vacuum chamber. Ultimately, it collides and merges with the plasma coming from the forming zone 2 on the other side. At this point, the compression zone coil 9 activates, and the magnetic field lines it generates compress the fused plasma radially and axially, increasing its temperature and density, leading to a fusion reaction. When the injected gas is deuterium, this fusion reaction can be summarized as follows:

[0044] Through the above reactions, a large number of helium nuclei, neutrons (n), gamma photons, and bremsstrahlung are generated. Neutrons have a wide energy range; in some applications, we prefer to use lower-energy neutrons, while in others, we prefer higher-energy neutrons. In this invention, neutrons near the extraction channel diffuse outwards in the form of a neutron beam. First, they encounter a high-energy neutron filter 13, which filters out fast neutrons (0.5 MeV-10 MeV). Then, they are further slowed down by a moderator 14, and then most of the thermal neutrons (approximately 0.025 eV) are filtered out by a thermal neutron filter 15. After passing through a gamma photon filter 16, most of the photons are filtered out, leaving mostly ultrathermal neutrons (1-10 eV). This neutron beam, after being collimated by a collimator 17, can be used for neutron therapy in BNCT (Brain-Necrotherapy). During this process, most of the neutrons diffused into the reflector 12 are bounced back into the extraction channel. A small number of neutrons passing through the reflector 12 are absorbed by the outer shield 11, thus reducing radiation exposure to staff, patients, and maintenance personnel.

[0045] Finally, it should be noted that the above specific embodiments are only used to describe the purpose, technical solution, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation of the present invention and is not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the foregoing specific embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions or improvements can be made to some or all of the technical features. These modifications, equivalent substitutions, and improvements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A neutron source based on an FRC linear magnetic confinement nuclear fusion device, characterized in that, include: The vacuum chamber provides a vacuum environment for the fusion reaction; The magnet system, located outside the vacuum chamber, is used to ionize the gas inside the vacuum chamber and induce a fusion reaction. The neutron extraction system, located in the fusion reaction region of the vacuum chamber, is used to extract superthermal neutrons; The neutron extraction system includes a neutron extraction channel (10), a shielding and reflection device, and a filter. The shielding and reflection device is located outside the extraction channel to shield and reflect neutrons. The neutron extraction channel (10) is equipped with a filter inside to filter out fast neutrons, thermal neutrons, and photons.

2. The neutron source based on an FRC linear magnetic confinement nuclear fusion device according to claim 1, characterized in that, The filter includes a high-energy neutron filter (13), a thermal neutron filter (15), and a gamma photon filter (16) arranged sequentially along the neutron extraction channel (10).

3. A neutron source based on an FRC linear magnetic confinement nuclear fusion device according to claim 2, characterized in that, A moderator (14) is also provided between the high-energy neutron filter (13) and the thermal neutron filter (15).

4. A neutron source based on an FRC linear magnetic confinement fusion device according to claim 1, characterized in that, The shielding and reflection device includes a shield (11) and a reflector (12), wherein the reflector (12) is wrapped around the outside of the lead-out channel, and the shield (11) is wrapped around the outside of the reflector (12).

5. A neutron source based on an FRC linear magnetic confinement fusion device according to claim 1, characterized in that, The end of the neutron extraction channel (10) is provided with a beam aperture, and a collimator (17) is provided in the beam aperture to change the size of the beam aperture.

6. A neutron source based on an FRC linear magnetic confinement fusion device according to claim 1, characterized in that, The vacuum chamber includes a compression zone (4), an acceleration zone (3), a forming zone (2), and a chamber end (1) connected sequentially from the middle to both sides.

7. A neutron source based on an FRC linear magnetic confinement fusion device according to claim 6, characterized in that, A divertor (5) can be installed in the transition zone between the chamber end (1), the acceleration zone (3), and the compression zone (4) to remove impurities after the fusion reaction.

8. A neutron source based on an FRC linear magnetic confinement fusion device according to claim 6, characterized in that, The magnet system includes a forming zone coil (6), an acceleration zone coil (8), and a compression zone coil (9), which are coaxially arranged with the vacuum chamber. The forming zone coil (6) is located outside the forming zone (2) of the vacuum chamber, the acceleration zone coil (8) is located outside the acceleration zone (3) of the vacuum chamber, and the compression zone coil (9) is located outside the compression zone (4) of the vacuum chamber.

9. A neutron source based on an FRC linear magnetic confinement fusion device according to claim 8, characterized in that, A transition coil (7) is also provided between the forming zone coil (6) and the acceleration zone coil (8), and between the acceleration zone coil (8) and the compression zone coil (9).

10. A neutron source based on an FRC linear magnetic confinement fusion device according to any one of claims 1-9, characterized in that, It also includes a power supply system for providing pulsed power to the magnet system.

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