Chinese Physics C > 2001, Vol. 25 > Issue(2): 167-173

Study of Layout Principle and Simulated Calculation for a Resonant Extraction System

DING Xiao-Ping^,,
KANG Wen

Institute for Heavy Ion Physics, Peking University, Beijing 100871, China2 Institute of High Energy Physics, CAS, Beijing 100039, China

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Abstract：
Based on the general theory and related technique of 1/3 integer resonant extraction, main principle of layout for momentum-amplitude selection method is studied in detail and some simple analytic formulae are given. The design of slow extraction system for Beijing Proton Therapy Synchrotron (BPTS) is then given as an example by considering its lattice. The results are also compared with simulated calculation. Study shows that an extraction beam for BPTS with extraction efficiency above 98% and momentum spread of 0.11 % can be obtained.

References

[1]

YU Qing–Chang, LUO Zheng–Ming. The Foundation of Proton Therapy Technology Beijing: Atomic Energy Press,1999 (in Chinese)(郁庆长,罗正明,质子治疗技术基础.北京:原子能出版社,1999) 2 Alexander Wu Chao, Maury Tigner Handbook of Accelerator Physics And Engineering, World Scientific, 1999, 2893 Steinbach Ch. Beam Optics at Resonant Extraction Sepia, CERN/PS 99–22(OP)4 Barton M. Beam Extraction from Synchrotron. Proc. 8th Int. Conf. On High Energy Accelerators, CERN, Geneva,1971. 85 5 Edwards D A. Syphers M J Resonance and Non Linear Motion, AIP Conference Proceedings 184–Physics of ParticleAccelerators, Fermilab Summer School, 1987. 20096 DING Xiao–Ping. The Study and Desing of Injection and Extraction System for a Small Proton Therapy Synchrotron.Ph. D. thesis, Institute of High Energy Physics, Beijing, 1998(丁小平. 小型医用质子同步加速器的注入和引出系统的研究及设计. 博士生论文.1998)

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DING Xiao-Ping and KANG Wen. Study of Layout Principle and Simulated Calculation for a Resonant Extraction System[J]. Chinese Physics C, 2001, 25(2): 167-173.

DING Xiao-Ping and KANG Wen. Study of Layout Principle and Simulated Calculation for a Resonant Extraction System[J]. Chinese Physics C, 2001, 25(2): 167-173. shu

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Received: 2000-01-17
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of Layout Principle and Simulated Calculation for a Resonant Extraction System

DING Xiao-Ping^,
KANG Wen

Corresponding author:DING Xiao-Ping,

Institute for Heavy Ion Physics, Peking University, Beijing 100871, China2 Institute of High Energy Physics, CAS, Beijing 100039, China

Received Date:2000-01-17
Accepted Date:1900-01-01
Available Online:2001-02-05

Abstract:Based on the general theory and related technique of 1/3 integer resonant extraction, main principle of layout for momentum-amplitude selection method is studied in detail and some simple analytic formulae are given. The design of slow extraction system for Beijing Proton Therapy Synchrotron (BPTS) is then given as an example by considering its lattice. The results are also compared with simulated calculation. Study shows that an extraction beam for BPTS with extraction efficiency above 98% and momentum spread of 0.11 % can be obtained.