Design of injection and extraction delay-line kicker magnet for circular electron-positron collider

Wu Guanjian; Wang Lei; Wang Guanwen; Shi Xiaolei; Zhai Xinzhe; Chen Jinhui

doi:10.11884/HPLPB202335.220364

Volume 35 Issue 5

Apr. 2023

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Article Navigation > High Power Laser and Particle Beams > 2023 > 35(5): 054002

Wu Guanjian, Wang Lei, Wang Guanwen, et al. Design of injection and extraction delay-line kicker magnet for circular electron-positron collider[J]. High Power Laser and Particle Beams, 2023, 35: 054002. doi: 10.11884/HPLPB202335.220364

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Wu Guanjian, Wang Lei, Wang Guanwen, et al. Design of injection and extraction delay-line kicker magnet for circular electron-positron collider[J]. High Power Laser and Particle Beams, 2023, 35: 054002. doi: 10.11884/HPLPB202335.220364

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Design of injection and extraction delay-line kicker magnet for circular electron-positron collider

doi: 10.11884/HPLPB202335.220364

Wu Guanjian^{1, 2
,},
Wang Lei^{1, 2},
Wang Guanwen²,
Shi Xiaolei²,
Zhai Xinzhe^{1, 2},
Chen Jinhui^{1, 2
,
,}

1.
School of Nuclear Science and Technology , University of Chinese Academy of Sciences , Beijing 100049, China
2.
Accelerator Division , Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049, China

Received Date: 2022-10-29
Accepted Date: 2023-02-14
Rev Recd Date: 2023-02-14

Available Online: 2023-02-21

Publish Date: 2023-04-07

Abstract

Abstract

Circular electron-positron collider (CEPC) is a double ring collider with a circumference of 100 km and a maximum energy of 120 GeV. To meet the needs of different energy particles injected from the booster to the collision ring, an off-axis injection system of the collision ring is designed for the W and Z energy modes to realize the accumulation of beam. To improve the injection efficiency, also be compatible with different injection energy, and different beam filling modes, and at the same time reduce the disturbance of other bucket by the kicker magnet during the injection process as much as possible, the off-axis injection kicker magnet system of the collision ring is required to be a trapezoidal wave pulse discharge system with a rise time and falling time of less than 200 ns and a pulse bottom width adjustment range of 440−2420 ns. Compared with the common lumped-inductance kicker magnet, the delay-line kicker magnet has better dynamic response characteristics and is suitable for producing a trapezoidal pulse with steeper front and more ideal waveform. In this paper, according to the physical requirements of beam injection of CEPC, the physical design and structure design of a delay-line kicker magnet are completed, and the PSpice and Opera programs are used for simulation. The design results show that the delay-line kicker magnet is composed of 26 LC units superimposed. The total length of the kicker magnet is 1018 mm, and the magnetic effective length is 942 mm. In [−20, 20] mm magnet aperture, the magnetic field strength is 0.042 1 T, the magnetic field uniformity is better than ±0.2%; the total rise time (10%−90%) of the kicker magnet system is 193 ns, and the fall time (90%−10%) is 191 ns. Theoretical analysis, PSpice program and Opera program simulation all verify the feasibility of the magnet design scheme.
- circular electron-positron collider,
- injection and extraction,
- off-axis injection,
- fast kicker,
- delay-line kicker

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References

[1]	The CEPC Study Group. CEPC conceptual design report[R]. Beijing: Institute of High Energy Physics (IHEP), 2018.
[2]	Ducimetiere L, Garrel N, Barnes M J, et al. The LHC injection kicker magnet[C]//Proceedings of the 2003 Particle Accelerator Conference. 2003: 1162-1164.
[3]	Frick E, Kühn H, Mayer M, et al. Fast pulsed magnet systems for proton and antiproton injection into the CERN 400 GeV proton synchrotron[C]//Proceedings of the 15th Power Modulator Symposium. 1982: 290-298.
[4]	Ueda A, Ushiku T, Mitsuhashi T. Construction of travelling wave kicker magnet and pulse power supply for the KEK-Photon factory storage ring[C]//Proceedings of the 2001 Particle Accelerator Conference. 2001: 4050-4052.
[5]	Jensen C, Hanna B, Reilly R. A fast injection kicker magnet for the Tevatron[C]//Proceedings of the 2001 Particle Accelerator Conference. 2001: 3720-3722.
[6]	Jensen C, Reilly R, Hanna B. A fast injection kicker system for the Tevatron[C]//Proceedings of the 2001 Particle Accelerator Conference. 2001: 3723-3725.
[7]	Barnes M J, Ducimetière L, Fowler T, et al. Injection and extraction magnets: kicker magnets[C]//Proceedings of the CERN Accelerator School CAS 2009: Specialised Course on Magnets. 2009: 141-166.
[8]	高杰, 李煜辉, 翟纪元. 高能粒子加速器关键技术[M]. 上海: 上海交通大学出版社, 2021: 194-197 Gao Jie, Li Yuhui, Zhai Jiyuan. Key technologies of high energy particle accelerators[M]. Shanghai: Shanghai Jiao Tong University Press, 2021: 194-197
[9]	张洪涛, 董海义, 杨奇. CSNS/RCS二极陶瓷真空盒磁控溅射镀TiN薄膜研究进展[J]. 真空, 2014, 51(4):61-64 doi: 10.13385/j.cnki.vacuum.2014.04.006 Zhang Hongtao, Dong Haiyi, Yang Qi. Development of titanium nitride coating for the CSNS/RCS dipole ceramic vacuum chambers by DC magnetron sputtering[J]. Vacuum, 2014, 51(4): 61-64 doi: 10.13385/j.cnki.vacuum.2014.04.006
[10]	王磊, 康文, 郝耀斗, 等. CSNS\RCS引出系统快脉冲冲击磁铁样机的设计[J]. 强激光与粒子束, 2009, 21(8):1263-1266 Wang Lei, Kang Wen, Hao Yaodou, et al. Fast kicker magnet prototype for CSNS\RCS extraction system[J]. High Power Laser and Particle Beams, 2009, 21(8): 1263-1266
[11]	Dinkel J, Hanna B, Jensen C, et al. Development of a high quality kicker magnet system[C]//Proceedings of International Conference on Particle Accelerators. 1993: 1357-1359.
[12]	赵籍九, 尹兆升. 粒子加速器技术[M]. 北京: 高等教育出版社, 2006: 298-299 Zhao Jijiu, Yin Zhaosheng. Particle accelerator technology[M]. Beijing: Higher Education Press, 2006: 298-299
[13]	Stange G. A new delay-line kicker with capacitive loading sandwiches[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1991, 300(3): 425-430.
[14]	Fiander D C, Metzmacher K D, Pearce P. Kickers and septa at the PS complex, CERN[C]//Proceedings of the KAON PDS Magnet Design Workshop. 1988: 71-86.
[15]	Schröder G. Fast pulsed magnet systems[M]//Chao A W, Tigner M. Handbook of Accelerator Physics and Engineering. Singapore: World Scientific Press, 1999: 460-466.
[16]	Forsyth E B, Fruitman M. Fast kickers[J]. Particle Accelerators, 1970, 1: 27-39.