RF knock-out extraction in HITFiL

A compact facility for cancer therapy has been designed and is presently under construction. A slow beam extraction system using the RF-Knock Out method and 3rd-order resonance is adopted in the synchrotron of this facility. Eight sextupoles are used, four of them are for correcting the chromaticity...

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Published inChinese physics C Vol. 36; no. 10; pp. 1004 - 1008
Main Author 石健 杨建成 夏佳文 原有进 李杰 柴伟平 宋明涛 张小虎
Format Journal Article
LanguageEnglish
Published 01.10.2012
Subjects
Beams (radiation)
Betatrons
Extraction
Particle trajectories
Rest
Synchrotrons
Transport
Vacuum chambers
光束传输
基因敲除
引出系统
提取过程
电子回旋
相空间图
颗粒运动轨迹
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Summary:A compact facility for cancer therapy has been designed and is presently under construction. A slow beam extraction system using the RF-Knock Out method and 3rd-order resonance is adopted in the synchrotron of this facility. Eight sextupoles are used, four of them are for correcting the chromaticity and the rest for driving the 3rd-order resonance. In order to save the aperture of vacuum chamber, a 3-magnet bump is adopted during the extraction process. The extraction phase space map and the last 3 turns’ particle trajectory before extraction are given. The matching betatron functions with HEBT （high energy beam transport） are also presented.
Bibliography:RF-knock out slow extraction; 3rd order resonance; cancer therapy
A compact facility for cancer therapy has been designed and is presently under construction. A slow beam extraction system using the RF-Knock Out method and 3rd-order resonance is adopted in the synchrotron of this facility. Eight sextupoles are used, four of them are for correcting the chromaticity and the rest for driving the 3rd-order resonance. In order to save the aperture of vacuum chamber, a 3-magnet bump is adopted during the extraction process. The extraction phase space map and the last 3 turns’ particle trajectory before extraction are given. The matching betatron functions with HEBT （high energy beam transport） are also presented.
11-5641/O4
SHI Jian 1,2 YANG Jian-Cheng 1;1） XIA Jia-Wen 1 YUAN You-Jin 1 LI Jie 1,2 CHAI Wei-Ping 1,2 SONG Ming-Tao 1 ZHANG Xiao-Hu 1,2 1 Institution of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/36/10/016