Characterizing a proton beam with two different methods in beam halo experiments

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...

Full description

Saved in:
Bibliographic Details
Published inChinese physics C Vol. 38; no. 8; pp. 73 - 77
Main Author 蒋洪平 傅世年 彭军 程鹏 黄涛 李鹏 李芳 李健 刘华昌 刘美飞 孟鸣 孟才 慕振成 荣林艳 欧阳华甫 孙彪 王博 田建民 王标 王盛昌 姚远 徐韬光 徐新安 辛文曲 赵富祥 曾磊 周文中
Format Journal Article
LanguageEnglish
Published 01.08.2014
Subjects
Beams (radiation)
Fittings
Halos
Proton beams
Quadrupoles
Scanners
Simulation
Three dimensional
光束参数
实验数据
束晕
测量数据
线扫描
表征
质子束
非线性仿真
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:11-5641/O4
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.
characterizing proton beam, quadrupole scans, multi-wire scanners, low energy intensity proton
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 Wao-Guang, XU Xin-An, XIN Wen-Qu, ZHAO Fu-Xiang, ZENG Lei, ZHOU Wen-Zhong（Accelerator Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China）
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/38/8/087002