A dual-beam deflection-type quadrupole magnet device

Abstract

The application relates to the technical field of particle accelerators, and particularly discloses a double-beam deflection type quadrupole magnet device which comprises a control circuit, an iron core, four groups of pole heads and two beam pipes; the four groups of pole heads are fixedly arranged in the iron core and are distributed in a rectangular shape; the control circuit is electrically connected with the four groups of pole heads, and the control circuit is used for changing the current size to adjust the magnetic field intensity of two groups of pole heads adjacent in the vertical direction; the polarities of the two groups of pole heads adjacent in the vertical direction are opposite, and the polarities of two groups of pole heads adjacent in the horizontal direction are opposite; one beam pipe is arranged between the two groups of pole heads adjacent in the vertical direction; the other beam pipe is arranged between the other two groups of pole heads adjacent in the vertical direction; the double-beam deflection type quadrupole magnet device can solve the problem that scientific research and production have a great demand for high-current beam, and the beam does not need to pass through the vacuum chamber excessively when being combined, and the structure is simple.

Description

Technical Field

[0001] This invention relates to the field of particle accelerator technology, and more specifically to a dual-beam deflection quadrupole magnet device. Background Technology

[0002] Particle accelerators are widely used in basic research in atomic nuclei, nuclear engineering, chemistry, radiobiology, and radiation medicine, as well as in the diagnosis and treatment of diseases, activation analysis of high-purity substances, radiation treatment of certain industrial products, radiation treatment of agricultural products and other foods, simulation of cosmic radiation, and simulation of nuclear explosions.

[0003] In the aforementioned scientific research and production, there is a significant demand for high-current proton beams with a certain energy level. However, the current capacity of proton beams generated by a single particle accelerator is often limited, making it difficult to meet this demand. This problem can be solved by beam merging; therefore, there is an urgent need to design and develop a dual-beam deflector device that is highly reliable, simple in structure, and easy to operate, capable of simultaneously deflecting and merging two beams. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a dual-beam deflection quadrupole magnet device, which aims to deflect and merge two beams to solve the problem of high-current beam demand in scientific research and production.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] In a first aspect, at least one embodiment of this disclosure provides a dual-beam deflection quadrupole magnet device, comprising: a control circuit, a ferroe, four sets of pole heads, and two beam channels.

[0007] The four sets of electrode heads are fixedly arranged within the ferrite, and the four sets of electrode heads are distributed in a rectangular pattern.

[0008] The control circuit is configured to be electrically connected to the four sets of poles, and the control circuit is used to change the current magnitude to adjust the magnetic field strength of two adjacent sets of poles in the vertical direction.

[0009] Among them, the polarities of two adjacent sets of electrodes in the vertical direction are opposite, and the polarities of two adjacent sets of electrodes in the horizontal direction are opposite.

[0010] One of the beam channels is positioned between two adjacent sets of electrodes in the vertical direction.

[0011] Another beam conduit is configured between two other sets of electrodes that are adjacent in the vertical direction.

[0012] The two beam channels are arranged opposite each other.

[0013] In at least one embodiment of the dual-beam deflection quadrupole magnet device provided in this disclosure, the distance between two adjacent sets of pole heads in the vertical direction is greater than the diameter of the beam channel.

[0014] In at least one embodiment of the dual-beam deflection quadrupole magnet device provided in this disclosure, the pole head includes a core material and a coil.

[0015] The core material is configured to be fixedly connected to the ferrite; the coil is wound on the core material, and the control circuit is connected to the coil.

[0016] In at least one embodiment of the dual-beam deflection quadrupole magnet device provided in this disclosure, there is a gap between two adjacent sets of pole heads in the horizontal direction.

[0017] In at least one embodiment of the dual-beam deflection quadrupole magnet device provided in this disclosure, the ferroe has a mounting hole in the middle, and the core material is located on the wall of the mounting hole.

[0018] In at least one embodiment of the dual-beam deflection quadrupole magnet device provided in this disclosure, the beam channel is inclined and the end of the beam channel is close to the central axis of the ferroe. The angle between the central axis of the beam channel and the central axis of the ferroe is the same as the angle between the beam and the central axis of the ferroe.

[0019] In at least one embodiment of the dual-beam deflection quadrupole magnet device provided in this disclosure, the coil is a copper coil and the core material is an iron core.

[0020] Secondly, some embodiments of this disclosure provide an application of a dual-beam deflection quadrupole magnet device, which is composed of multiple dual-beam deflection quadrupole magnet devices connected in series or arranged at intervals to form an assembly. The assembly of multiple dual-beam deflection quadrupole magnet devices can meet the needs of particularly high beam energy, and the use of multiple dual-beam deflection quadrupole magnet devices in series can improve the beam merging effect and accuracy.

[0021] The beneficial effects of this invention are as follows:

[0022] By using two sets of diodes, two beams of equal energy are simultaneously deflected inward to achieve beam merging. Most components of the entire device are housed within the ferroe, resulting in a simple structure and easy fabrication. No vacuum chamber is required during beam merging, leading to a compact and space-saving design.

[0023] It enables multi-directional control of the particle beam, thereby improving the accuracy and stability of the particle beam. It can reduce the divergence angle of the particle beam and improve the focusing effect. The effect is even better when multiple dual-beam deflection quadrupole magnet devices are arranged and connected in series. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a dual-beam deflection quadrupole magnet device in some embodiments.

[0026] Figure 2 This is a schematic diagram of the forces acting on a beam in a magnetic field.

[0027] Figure 3 This is a schematic diagram illustrating the application of the dual-beam deflection quadrupole magnet device in some embodiments.

[0028] In the picture:

[0029] 10. Control circuit;

[0030] 20. Tijuana;

[0031] 30. Extreme head;

[0032] 40. Beam conduit;

[0033] 50. Dual-beam deflection quadrupole magnet device. Detailed Implementation

[0034] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments, not all embodiments.

[0035] Limited by the current intensity of the proton beam generated by a single particle accelerator, the beam current intensity often fails to meet the usage requirements. Therefore, it is urgent to design and develop a dual-beam deflection device for use in beam merging systems to solve the problem of the large demand for high-current beams in scientific research and production.

[0036] like Figure 1 As shown, this disclosure provides a dual-beam deflection quadrupole magnet device, which includes a control circuit 10, a ferroe 20, four sets of pole heads 30 and two beam channels 40.

[0037] Specifically, four sets of pole heads 30 are fixedly arranged inside the Tier 20, and the four sets of pole heads 30 are distributed in a rectangular shape.

[0038] Furthermore, the polarities of two adjacent sets of electrode tips 30 in the vertical direction are opposite, and the polarities of two adjacent sets of electrode tips 30 in the horizontal direction are also opposite. One beam conduit 40 is disposed between two adjacent sets of electrode tips 30 in the vertical direction. Another beam conduit 40 is disposed between two other adjacent sets of electrode tips 30 in the vertical direction.

[0039] For example, the four sets of terminals include a first N-terminal terminal, a first S-terminal terminal, a second N-terminal terminal, and a second S-terminal terminal.

[0040] The first N-pole tip is located below the first S-pole tip, and the second N-pole tip is located above the second S-pole tip. The first N-pole tip and the second N-pole tip are diagonally distributed, as are the first S-pole tip and the second S-pole tip.

[0041] Specifically, the control circuit 10 is configured to be electrically connected to the four sets of poles 30. The control circuit 10 is used to change the current magnitude to adjust the magnetic field strength of two adjacent sets of poles 30 in the vertical direction.

[0042] In this embodiment, the distance between two adjacent sets of electrode heads 30 in the vertical direction is greater than the diameter of the beam channel 40.

[0043] like Figure 2 As shown, during operation, when the beam passes through the dipole, it is deflected under the action of the Lorentz force. By adjusting the direction of the magnetic field, beams carrying different types of charges will all be deflected inward and eventually merge.

[0044] The beam deflection radius must match the beam channel deflection radius, which is r = mv / Bq. For beams with different energies and charge-to-mass ratios, the beam radius is changed by altering the magnetic field strength of the dipole, which is B = mv / rq. Both the direction and strength of the dipole's magnetic field can be controlled by control circuit 10. This allows for multi-directional control of the particle beam, thereby improving its accuracy and stability.

[0045] In this embodiment, the electrode 30 includes a core (not shown) and a coil (not shown). The core is configured to be fixedly connected to the ferrite 20; the coil is wound around the core, and the control circuit 10 is connected to the coil.

[0046] Furthermore, for beams of different energies, the magnetic field strength can be adjusted by changing the current magnitude to keep the deflection angle constant; the direction of the magnetic field varies depending on the type of charge in the deflected beam, but can be controlled by the power supply.

[0047] For example, the coil is a copper coil and the core material is an iron core.

[0048] Furthermore, the Tier 20 has an assembly hole in the middle, with the core material located on the hole wall.

[0049] Most of the components of the entire device are housed within the Tier 100, resulting in a simple structure and easy fabrication. During beam merging, a vacuum chamber is not required for transition, leading to a compact structure and minimal space requirements.

[0050] In this embodiment, there is a gap between two adjacent sets of electrode heads 30 in the horizontal direction.

[0051] In this embodiment, the beam pipe 40 is inclined and the end of the beam pipe 40 is close to the central axis of the Tier 20. The angle between the beam pipe 40 and the central axis of the Tier 20 is the same as the angle between the beam and the central axis of the Tier 20.

[0052] like Figure 3 As shown, some embodiments of this disclosure provide an application of a dual-beam deflection quadrupole magnet device, which is composed of two dual-beam deflection quadrupole magnet devices 50 from the above embodiments combined at a distance. This can meet the needs of cases with particularly high beam energy. The use of multiple dual-beam deflection quadrupole magnet devices in series can improve the beam merging effect and accuracy.

[0053] In another embodiment not shown, an application of a dual-beam deflection quadrupole magnet device is provided, which is formed by connecting the dual-beam deflection quadrupole magnet devices of the various embodiments in series.

[0054] Although embodiments of this application have been shown and described above, the scope of protection of this invention is not limited thereto. Any variations or substitutions that can be conceived without inventive effort should be covered within the scope of protection of this invention. Unless expressly stated otherwise, no element, action or instruction used herein should be construed as critical or necessary.

Claims

1. A double-beam deflection-type quadrupole magnet device, characterized by comprising: The application relates to a magnetic field generator, comprising: an iron core; four groups of pole heads fixedly arranged in the iron core, and the four groups of pole heads being arranged in a rectangular distribution; two beam pipes; and a control circuit electrically connected with the four groups of pole heads, the control circuit being used for changing the current size to adjust the magnetic field intensity of two groups of pole heads adjacent in the vertical direction; wherein the polarities of the two groups of pole heads adjacent in the vertical direction are opposite, and the polarities of two groups of pole heads adjacent in the horizontal direction are opposite; one of the beam pipes is arranged between the two groups of pole heads adjacent in the vertical direction; the other beam pipe is arranged between the other two groups of pole heads adjacent in the vertical direction; the two beam pipes are oppositely arranged. The distance between the two groups of pole heads adjacent in the vertical direction is greater than the diameter of the beam pipe.

2. The dual-beam deflection-type quadrupole magnet device according to claim 1, characterized by The pole head comprises:

3. The dual-beam deflection-type quadrupole magnet device according to claim 2, characterized by a core fixedly connected with the iron core; and a coil wound on the core; wherein the control circuit is connected with the coil. There is a gap between the two groups of pole heads adjacent in the horizontal direction.

4. The dual-beam deflection-type quadrupole magnet device according to claim 1, characterized by The middle part of the iron core has an assembly hole, and the core is located on the hole wall of the assembly hole.

5. The dual-beam deflection-type quadrupole magnet device according to claim 3, wherein The beam pipe is arranged in an inclined manner, and the end of the beam pipe is close to the central axis of the iron core, the angle between the central axis of the beam pipe and the central axis of the iron core is the same as the angle between the beam and the central axis of the iron core.

6. The dual-beam deflection-type quadrupole magnet device according to claim 1, characterized by The coil is a copper coil, and the core is an iron core.

7. The dual-beam deflection-type quadrupole magnet device according to claim 3, wherein A plurality of sub-devices are connected in series or arranged with a spacing.

8. A double-beam deflection-type quadrupole magnet device, characterized by comprising: The sub-device comprises: an iron core; four groups of pole heads fixedly arranged in the iron core, and the four groups of pole heads being arranged in a rectangular distribution; two beam pipes; and a control circuit electrically connected with the four groups of pole heads, the control circuit being used for changing the current size to adjust the magnetic field intensity of two groups of pole heads adjacent in the vertical direction; wherein the polarities of the two groups of pole heads adjacent in the vertical direction are opposite, and the polarities of two groups of pole heads adjacent in the horizontal direction are opposite; one of the beam pipes is arranged between the two groups of pole heads adjacent in the vertical direction; the other beam pipe is arranged between the other two groups of pole heads adjacent in the vertical direction; the distance between the two groups of pole heads adjacent in the vertical direction is greater than the diameter of the beam pipe; the two beam pipes are oppositely arranged; the beam pipe is arranged in an inclined manner, and the end of the beam pipe is close to the central axis of the iron core, the angle between the central axis of the beam pipe and the central axis of the iron core is the same as the angle between the beam and the central axis of the iron core. ​

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