Low Energy Beam Transport of High Current Proton Beam with Quality Analysis System

HUANG Tao; WU Qi; YANG Yao; LIU Jianli; FANG Xing; QIAN Cheng; SUN Liangting; ZHAO Hongwei

doi:10.11804/NuclPhysRev.35.01.040

High current proton source and the low energy beam transport(LEBT) are the key front-end systems for CIADS injector:high current proton linac accelerator. CIADS injector's LEBT adopts double solenoid matching structure, using a limit cone which can partially avoid H₂⁺ and H₃⁺ which injecting into the back-end linac accelerator may impact the long-term stability and reliability of the whole system. It will be an effective method to separate the hybrid ions (H⁺, H₂⁺, H₃⁺) by adding a dipole magnet at LEBT. In this article, we simulated and mesasured the high current proton beam quality behind the LEBT with a 30 degree dipole. The results show that the the proton beam quality is significantly effected by high-order magnetic fields of the dipole magnet, and the effect increases with the increase of the beam envelope. The achieved result is useful for the LEBT design of CIADS injector.

Low Energy Beam Transport of High Current Proton Beam with Quality Analysis System

1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

2. University of Chinese Academy of Sciences, Beijing 100049, China

Funds: National Basic Research Program of China (973 Program)(2014CB845502); Equipment Research and Development Project of Chinese Academy of Sciences(28Y531040); National Natural Science Foundation of China(11405238)

Received Date: 2017-04-10

Rev Recd Date: 2017-10-19

Publish Date: 2018-03-20

Key words:

Abstract: High current proton source and the low energy beam transport(LEBT) are the key front-end systems for CIADS injector:high current proton linac accelerator. CIADS injector's LEBT adopts double solenoid matching structure, using a limit cone which can partially avoid H₂⁺ and H₃⁺ which injecting into the back-end linac accelerator may impact the long-term stability and reliability of the whole system. It will be an effective method to separate the hybrid ions (H⁺, H₂⁺, H₃⁺) by adding a dipole magnet at LEBT. In this article, we simulated and mesasured the high current proton beam quality behind the LEBT with a 30 degree dipole. The results show that the the proton beam quality is significantly effected by high-order magnetic fields of the dipole magnet, and the effect increases with the increase of the beam envelope. The achieved result is useful for the LEBT design of CIADS injector.

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Reference (13)

[1]	CHAUVIN N, ADROIT G, DELFERRIERE O, et al. Simulation and Measurements in High Intensity LEBT with Space Charge Compensation[C]. HB2012, Beijing, 2014:THO3A03.
[2]	YANG Yao, ZHANG Zimin, WU Qi, et al. Review of Scientific Instruments, 2013, 84:033306.
[3]	FENG Zhe, GUAN Xialing, WEI Jie. Design of the 2.45 GHz ECR Proton Source and LEBT in CPHS (Compact Pulsed Hadron Source)[C]. LINAC2010:Tsukuba, 2010:THP113.
[4]	WU Qi, ZHANG Zimin, SUN Liangting. Review of Scientific Instruments, 2014, 85:02A703
[5]	WEISSMAN L, DAN B, HALFON S. LEBT Beam Tuning Using Neutralized Ions in the SARAF Front End[C]. LINAC2010, Tsukuba, 2010:TUP074.
[6]	SHOR A, VARTSKY D, DANGENDORF V. Journal of Instrumentation, 2012, 7(6):C06003.
[7]	KIM S H, ALEKSANDROV A, CROFFORD M, et al. Phys Rev st Accel Beams, 2010, 13(7):070101.
[8]	LIU Weiping, LI Zhihong, HE Jiangjun, et al. Progress of Jinping Underground laboratory for Nuclear Astrophysics (JUNA)[C]. European Physical Journal Web of Conferences. European Physical Journal Web of Conferences, 2016:1.
[9]	WU Qi, SUN Liangting, CUI Baoqun, et al. Nucl Instr Meth A, 2016, 830:214.
[10]	ASEEV V N, OSTROUMOV P N, LESSNER E S, et al. Track:The New Beam Dynamics Code[C]. In Proceedings of the PAC 2005, Knoxville, USA, 2005:2053.
[11]	TAN Biao, WU Qi, YANG Yao, et al. Nuclear Physics Review, 2016, 33(1):36. (in Chinese) (谭彪, 武启, 杨尧, 等. 原子核物理评论, 2016, 33(1):36.)
[12]	YANG Yao, ZHANG Zimin, ZHANG Wenhui, et al. Atomic Energy Science and Technology, 2013, 47(12):2336. (in Chinese) (杨尧, 张子民, 张文慧, 等. 原子能科学技术, 2013, 47(12):2336.)
[13]	YANG Yao, SUN Liangting, HU Qiang, et al. Review of Scientific Instruments, 2014, 85(2):02A719.

Low Energy Beam Transport of High Current Proton Beam with Quality Analysis System

doi: 10.11804/NuclPhysRev.35.01.040

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