A particle-in-cell mode beam dynamics simulation of medium energy beam transport for the SSC-Linac

A new linear accelerator system,called the SSC-Linac injector,is being designed at HIRFL （the heavy ion research facility of Lanzhou）.As part of the SSC-Linac,the medium energy beam transport （MEBT） consists of seven magnetic quadrupoles,a re-buncher and a diagnose box.The total length of this segme...

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Published inChinese physics C Vol. 36; no. 1; pp. 84 - 90
Main Author 肖陈 何源 原有进 陆元荣 刘勇 王志军 杜小楠 姚庆高 刘戈 徐孟鑫 贺守波 夏佳文
Format Journal Article
LanguageEnglish
Published IOP Publishing 2012
Subjects
Acceptance
Beams (radiation)
Dynamics
Linear accelerators
Particle in cell technique
Quadrupoles
Simulation
Three dimensional
Transport
中能
兰州重离子加速器
动力学模拟
医疗技术
束流传输
直线加速器
粒子束
细胞
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ISSN1674-1137
2058-6132
0254-3052
2058-6132
DOI10.1088/1674-1137/36/1/015

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Summary:A new linear accelerator system,called the SSC-Linac injector,is being designed at HIRFL （the heavy ion research facility of Lanzhou）.As part of the SSC-Linac,the medium energy beam transport （MEBT） consists of seven magnetic quadrupoles,a re-buncher and a diagnose box.The total length of this segment is about 1.75 m.The beam dynamics simulation in MEBT has been studied using the TRACK 3D particle-in-cell code,and the simulation result shows that the beam accelerated from the radio frequency quadrupole （RFQ） matches well with the acceptance of the following drift tube linac （DTL） in both the transverse and longitudinal phase spaces,and that most of the particles can be captured by the final sector focusing cyclotron for further acceleration.The longitudinal emittance of the RFQ and the longitudinal acceptance of the DTL was calculated in detail,and a multi-particle beam dynamics simulation from the ion source to the end of the DTL was done to verify the original design.
Bibliography:11-5641/O4
XIAO Chen 1,2;1） HE Yuan 1 YUAN You-Jin 1 LU Yuan-Rong 3 LIU Yong 1 WANG Zhi-Jun 1,2,4 DU Xiao-Nan 1,2 YAO Qing-Gao 1 LIU Ge 3 XU Meng-Xin 1,2 HE Shou-Bo 1,2 XIA Jia-Wen 1 1 Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China 3 Key Laboratory of Heavy Ion Physics Ministry of Education,Peking University,Beijing 100871,China 4 School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China
A new linear accelerator system,called the SSC-Linac injector,is being designed at HIRFL （the heavy ion research facility of Lanzhou）.As part of the SSC-Linac,the medium energy beam transport （MEBT） consists of seven magnetic quadrupoles,a re-buncher and a diagnose box.The total length of this segment is about 1.75 m.The beam dynamics simulation in MEBT has been studied using the TRACK 3D particle-in-cell code,and the simulation result shows that the beam accelerated from the radio frequency quadrupole （RFQ） matches well with the acceptance of the following drift tube linac （DTL） in both the transverse and longitudinal phase spaces,and that most of the particles can be captured by the final sector focusing cyclotron for further acceleration.The longitudinal emittance of the RFQ and the longitudinal acceptance of the DTL was calculated in detail,and a multi-particle beam dynamics simulation from the ion source to the end of the DTL was done to verify the original design.
SSC-Linac; MEBT; PIC mode; acceptance; re-buncher
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ISSN:1674-1137
2058-6132
0254-3052
2058-6132
DOI:10.1088/1674-1137/36/1/015