Characterizing a proton beam with two different methods inbeam halo experiments

JIANG Hong-Ping; FU Shi-Nian; PENG Jun; CHENG Peng; HUANG Tao; LI Peng; LI Fang; LI Jian; LIU Hua-Chang; LIU Mei-Fei; MENG Ming; MENG Cai; MU Zhen-Cheng; RONG Lin-Yan; OUYANG Hua-Fu; SUN Biao; WANG Bo; TIAN Jian-Min; WANG Biao; WANG Sheng-Chang; YAO Yuan; XU Tao-Guang; XU Xin-An; XIN Wen-Qu; ZHAO Fu-Xiang; ZENG Lei; ZHOU Wen-Zhong

doi:10.1088/1674-1137/38/8/087002

Chinese Physics C> 2014, Vol. 38> Issue(8) : 087002 DOI: 10.1088/1674-1137/38/8/087002

Characterizing a proton beam with two different methods inbeam halo experiments

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Abstract：
In beam halo experiments, it is very important to correctly characterize the RFQ output proton beam. In order to simulate the beam dynamics properly, we must first know the correct initial beam parameters. We have used two different methods, quadrupole scans and multi-wire scanners to determine the transverse phase-space properties of the proton beam. The experimental data were analyzed by fitting to the 3-D nonlinear simulation code IMPACT. For the quadrupole scan method, we found that the RMS beam radius and the measured beam-core profiles agreed very well with the simulations. For the multi-wire scanner method, we choose the case of a matched beam. By fitting the IMPACT simulation results to the measured data, we obtained the Courant-Snyder parameters and the emittance of the beam. The difference between the two methods is about eight percent, which is acceptable in our experiments.

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JIANG Hong-Ping, FU Shi-Nian, PENG Jun, CHENG Peng, HUANG Tao, LI Peng, LI Fang, LI Jian, LIU Hua-Chang, LIU Mei-Fei, MENG Ming, MENG Cai, MU Zhen-Cheng, RONG Lin-Yan, OUYANG Hua-Fu, SUN Biao, WANG Bo, TIAN Jian-Min, WANG Biao, WANG Sheng-Chang, YAO Yuan, XU Tao-Guang, XU Xin-An, XIN Wen-Qu, ZHAO Fu-Xiang, ZENG Lei and ZHOU Wen-Zhong. Characterizing a proton beam with two different methods inbeam halo experiments[J]. Chinese Physics C, 2014, 38(8): 087002. doi: 10.1088/1674-1137/38/8/087002

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Received: 2013-10-15
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Characterizing a proton beam with two different methods inbeam halo experiments

Corresponding author: JIANG Hong-Ping,

Received Date: 2013-10-15

Accepted Date: 1900-01-01

Available Online: 2014-08-05

Abstract: In beam halo experiments, it is very important to correctly characterize the RFQ output proton beam. In order to simulate the beam dynamics properly, we must first know the correct initial beam parameters. We have used two different methods, quadrupole scans and multi-wire scanners to determine the transverse phase-space properties of the proton beam. The experimental data were analyzed by fitting to the 3-D nonlinear simulation code IMPACT. For the quadrupole scan method, we found that the RMS beam radius and the measured beam-core profiles agreed very well with the simulations. For the multi-wire scanner method, we choose the case of a matched beam. By fitting the IMPACT simulation results to the measured data, we obtained the Courant-Snyder parameters and the emittance of the beam. The difference between the two methods is about eight percent, which is acceptable in our experiments.

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Characterizing a proton beam with two different methods inbeam halo experiments

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