Simulation design of an S-band 6 MeV compact microtron

Dong Ziqiang; Pei Shilun; Zhang Tong; Shao Zhuoxia; Wang Lin; Lu Yalin

doi:10.11884/HPLPB202537.240343

Volume 37 Issue 4

Mar. 2025

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Article Navigation > High Power Laser and Particle Beams > 2025 > 37(4): 044006

Dong Ziqiang, Pei Shilun, Zhang Tong, et al. Simulation design of an S-band 6 MeV compact microtron[J]. High Power Laser and Particle Beams, 2025, 37: 044006. doi: 10.11884/HPLPB202537.240343

Citation:

Dong Ziqiang, Pei Shilun, Zhang Tong, et al. Simulation design of an S-band 6 MeV compact microtron[J]. High Power Laser and Particle Beams, 2025, 37: 044006. doi: 10.11884/HPLPB202537.240343

Dong Ziqiang, Pei Shilun, Zhang Tong, et al. Simulation design of an S-band 6 MeV compact microtron[J]. High Power Laser and Particle Beams, 2025, 37: 044006. doi: 10.11884/HPLPB202537.240343

Citation:

Dong Ziqiang, Pei Shilun, Zhang Tong, et al. Simulation design of an S-band 6 MeV compact microtron[J]. High Power Laser and Particle Beams, 2025, 37: 044006. doi: 10.11884/HPLPB202537.240343

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Simulation design of an S-band 6 MeV compact microtron

doi: 10.11884/HPLPB202537.240343

Dong Ziqiang^{1, 3
,},
Pei Shilun⁴,
Zhang Tong^{1, 3},
Shao Zhuoxia^{1, 3
,
,},
Wang Lin²,
Lu Yalin^{1, 3}

1.
Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
2.
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China
3.
Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, China
4.
China Institute of Atomic Energy, Beijing 102413, China

Received Date: 2024-09-25
Accepted Date: 2025-02-15
Rev Recd Date: 2025-02-15

Available Online: 2025-03-27

Publish Date: 2025-04-15

Abstract

Abstract

The Anhui Laboratory of Advanced Photon Science and Technology has beer developing a 6 MeV compact microtron, which can be used to drive compact microfocus X-ray sources or compact terahertz free electron lasers. To achieve a more compact accelerator design, the CST Electromagnetic suite was used to design and calculate the second type RF cavity of the microtron. The frequency of the RF cavity is 2998.2 MHz, and an accelerating voltage of over 1 MV can be obtained in the RF cavity gap. The electron energy gain can reach about 0.9 MeV per pass. At the same time, CST Particle Studio was used to simulate the electron generation and acceleration process in the ultra-high frequency cavity with thermionic cathode. The effects of microwave power amplitude, magnetic field strength, cathode emission position, and beam channel on the microtron were studied. The coupler design considering beam loading was also completed, and the operating parameters of the RF cavity during steady-state operation were obtained. The simulation results show that when the beam loading reaches steady state, with a cathode emission capacity of 20 A/cm², a current of 24 mA can be induced, a beam energy of 6 MeV, an energy spread of 0.64%, and a transverse RMS size of 3.3 mm × 1.8 mm can be obtained.
- microtron,
- RF cavity,
- beam simulation,
- beam loading,
- coupling coefficient

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References(15)

References

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