Research and design of chopper for accelerator neutron source

Pan Wenlong; Li Haipeng; Wang Sheng; Su Haoquan; Zhu Jie

doi:10.11884/HPLPB202638.250164

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Pan Wenlong, Li Haipeng, Wang Sheng, et al. Research and design of chopper for accelerator neutron source[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250164

Citation:

Pan Wenlong, Li Haipeng, Wang Sheng, et al. Research and design of chopper for accelerator neutron source[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250164

Pan Wenlong, Li Haipeng, Wang Sheng, et al. Research and design of chopper for accelerator neutron source[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250164

Citation:

Pan Wenlong, Li Haipeng, Wang Sheng, et al. Research and design of chopper for accelerator neutron source[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202638.250164

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Research and design of chopper for accelerator neutron source

doi: 10.11884/HPLPB202638.250164

Pan Wenlong^{1, 2
,},
Li Haipeng^{1, 2
,
,},
Wang Sheng^{1, 2, 3},
Su Haoquan^{1, 2},
Zhu Jie^{1, 2}

1.
School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China
2.
Huzhou Neutron Science Laboratory, Xi’an Jiaotong University, Huzhou, Zhejiang 313000, China
3.
Hua Boron Neutron Technology(Hangzhou) Co., Ltd., Hangzhou 310000, China)

Received Date: 2025-06-07
Accepted Date: 2025-12-16
Rev Recd Date: 2025-12-28

Available Online: 2026-01-15

Abstract

Abstract

Background
Cancer is a major global health issue. With the development of accelerator physics, boron neutron capture therapy based on accelerator neutron sources has received widespread attention. In the accelerator system, the low energy beam transport is responsible for connecting the ion source and accelerator, as well as processing the beam. For the problem of beam deflection, the chopper is required, so a high-performance chopper is crucial for the entire system.
Purpose
This study aims to improve the electric field uniformity of the chopper by using circular arc plates instead of parallel plates, and to simulate the chopper design through Python program coupling using CST studio suite and Tracewin software.
Methods
The beam deflection formula of the chopper was theoretically derived, and the electrostatic and beam dynamics design was completed through CST studio suite and Tracewin software. The advantages and feasibility of the circular arc plate were verified through coupling simulation of the two software.
Results
Theoretical calculations and simulations have shown that the electric field distribution of circular arc plates is more uniform, and the beam deflection function is efficiently completed, confirming the feasibility of the design scheme.
Conclusions
By coupling CST studio suite with Tracewin software for simulation, a more realistic simulation of beam dynamics can be achieved, which solves the problem of Tracewin software being unable to set the electric field strength of circular arc plates. The joint simulation method of CST studio suite and Tracewin has been developed, which has certain value for research on chopper design.
- accelerator-based neutron source,
- boron neutron capture therapy,
- chopper,
- beam dynamic,
- electrostatic field calculation

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References(16)

References

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