HIAF-BRing的双向涂抹注入模拟

曲国峰; 夏佳文; 杨建成; 杜衡; 李钟汕; 葛文文; 郑文亨; 李小妮; 胡雪静; 柴伟平

doi:10.11804/NuclPhysRev.35.01.028

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HIAF-BRing的双向涂抹注入模拟

曲国峰, 夏佳文, 杨建成, 杜衡, 李钟汕, 葛文文, 郑文亨, 李小妮, 胡雪静, 柴伟平

文章导航 > 原子核物理评论 > 2018 > 35(1): 28-33

曲国峰, 夏佳文, 杨建成, 杜衡, 李钟汕, 葛文文, 郑文亨, 李小妮, 胡雪静, 柴伟平. HIAF-BRing的双向涂抹注入模拟[J]. 原子核物理评论, 2018, 35(1): 28-33. doi: 10.11804/NuclPhysRev.35.01.028

引用本文:

QU Guofeng, XIA Jiawen, YANG Jiancheng, LI Zhongshan, DU Heng, GE Wenwen, ZHENG Wenheng, LI Xiaoni, HU Xuejing, CHAI Weiping. Simulation of Two Planes Painting Injection for HIAF-Bring[J]. Nuclear Physics Review, 2018, 35(1): 28-33. doi: 10.11804/NuclPhysRev.35.01.028

Citation:

QU Guofeng, XIA Jiawen, YANG Jiancheng, LI Zhongshan, DU Heng, GE Wenwen, ZHENG Wenheng, LI Xiaoni, HU Xuejing, CHAI Weiping. Simulation of Two Planes Painting Injection for HIAF-Bring[J]. Nuclear Physics Review, 2018, 35(1): 28-33. doi: 10.11804/NuclPhysRev.35.01.028

HIAF-BRing的双向涂抹注入模拟

doi: 10.11804/NuclPhysRev.35.01.028

曲国峰^1,2,
夏佳文¹,
杨建成¹,
杜衡^1,2,
李钟汕^1,2,
葛文文^1,2,
郑文亨^1,2,
李小妮^1,2,
胡雪静¹,
柴伟平^1,

1.
中国科学院近代物理研究所, 兰州 730000;
2.
中国科学院大学, 北京 100049

基金项目: 国家自然科学基金资助项目（11505256，11405237）

详细信息

作者简介:
曲国峰(1989-),男,吉林人,博士研究生,从事核技术及应用研究;E-mail:qgfnut@impcas.ac.cn

通讯作者: 柴伟平,E-mail:chaiwp@impcas.ac.cn。

中图分类号: TL56

Simulation of Two Planes Painting Injection for HIAF-Bring

1.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds: National Natural Science Foundation of China (11505256, 11405237)

摘要: BRing是HIAF工程的主加速器，其设计流强为每个脉冲内的粒子数1×10¹¹个（²³⁸U³⁴⁺），为了达到此设计流强，注入增益应达到88倍以上。BRing采用了双向涂抹注入方案，其满足BRing的注入增益要求，同时具有注入时间短和累计束分布较均匀而减小了空间电荷效应的特点。双向涂抹注入方案利用水平和垂直两组凸轨磁铁以及倾斜的静电偏转板，在水平相空间和垂直相空间内同时进行涂抹。为了检验双向涂抹注入方案能否达到BRing的设计要求，利用ORBIT程序对双向涂抹注入过程进行了模拟，模拟结果显示，在单次双向涂抹注入113圈的情况下，注入效率为97.7%，注入增益达到110.3倍，满足了BRing流强要求。累积束的分布相对均匀，空间电荷效应引起的工作点漂移约为-0.02，粒子因共振损失风险很小。针对注入束流偏角、切割板角度、工作点偏差和Bump延时等不同注入参数进行了误差分析，结果显示BRing的双向涂抹注入效率对注入参数偏差的容忍度较高。

BRing is the main accelerator of High Intensity heavy Ion Accelerator Facility(HIAF) and its design current is 1×10¹¹ particles per pulse (²³⁸U³⁴⁺). To accumulate beams up to the design current, the injection gain has to reach 88. Two planes painting injection scheme is proposed for BRing. This scheme uses a tilted electrostatic septum and 8 bump magnets to paint beams into horizontal and vertical phase space simultaneously. It can inject enough beams into the ring in a short time and paint beams uniformly. The injection process is simulated using ORBIT code and 113 turns is injected into BRing with an injection efficiency of 97.7% which meets the requirement for beam current of BRing. The accumulated beams are distributed uniformly in transverse and hence have a little tune shift of -0.02 which reduces the risk of beam loss due to the resonance. Errors of injection parameters are analysed and the result shows two planes painting injection scheme has a high tolerance for errors of injection parameters.
- HIAF-BRing /
- 双向涂抹注入 /
- ORBIT /
- 重离子加速器
Abstract: BRing is the main accelerator of High Intensity heavy Ion Accelerator Facility(HIAF) and its design current is 1×10¹¹ particles per pulse (²³⁸U³⁴⁺). To accumulate beams up to the design current, the injection gain has to reach 88. Two planes painting injection scheme is proposed for BRing. This scheme uses a tilted electrostatic septum and 8 bump magnets to paint beams into horizontal and vertical phase space simultaneously. It can inject enough beams into the ring in a short time and paint beams uniformly. The injection process is simulated using ORBIT code and 113 turns is injected into BRing with an injection efficiency of 97.7% which meets the requirement for beam current of BRing. The accumulated beams are distributed uniformly in transverse and hence have a little tune shift of -0.02 which reduces the risk of beam loss due to the resonance. Errors of injection parameters are analysed and the result shows two planes painting injection scheme has a high tolerance for errors of injection parameters.
- HIAF-BRing /
- two planes painting injection /
- ORBIT /
- heavy ion accelerator

[1]	YANG J C, XIA J W, XIAO G Q, et al. Nucl Instr & Meth B, 2013, 317(5):263.
[2]	GAO Xiang, YANG Jiancheng, XIA Jiawen, et al. Chinese Physics C, 2014, 38(4):84.
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[4]	PRIOR C R, REES G H. Nucl Instr & Meth A, 1998, 415(1-2):357.
[5]	PRIOR C R. Multiturn Injection for Heavy Ion Fusion[C]. Proc Symp on Accelerator Aspects of Heavy Ion Fusion, GSI, Darmstadt, March 1982:290.
[6]	PRIOR C R, SCHONAUER H O. Multi-turn Injection into Accumulators for Heavy Ion Fusion[C]. Proc 5th European Particle Accelerator Conf, EPAC 96, Sitges, Barcelona, 1996:2391.
[7]	PRIOR C R. HIDIF Horizontal-Vertical Multi-Turn Injection[R]. HIDIF/RAL2, CLRC, Rutherford Appleton Laboratory, 1997.
[8]	REES G H. HIDIF Lattice for Horizontal-Vertical MultiTurn Injection[R]. HIDIF/RAL1, CLRC, Rutherford Appleton Laboratory, 1997.
[9]	HASSE R W, HOFMANN I. Nucl Instr & Meth A, 1998, 415(1-2):478.
[10]	GALAMBOS J, DANILOV S, JEON D, et al. ORBIT-a Ring Injection Code with Space Charge[C]. Particle Accelerator Conference, Proceedings of the IEEE, 1999:3143.
[11]	GALAMBOS J D, HOLMES J A, OLSEN D K. ORBIT User Manual. 1999.
[12]	KIM D H, JANG B T. Design and Construction of the CERN LEIR Injection Septa[C]. 21st Particle Accelerator Conference(PAC 2005), 2005:2690.
[13]	GALAMBOS J D, LUCCIO A U, OLSEN D K, et al. A Particle-in-Cell Model for Space Charge Dynamics in Rings. 6th European Particle Accelerator Conference, Stockholm, Sweden, 22-26 Jun, 1998.
[14]	HOCKNEY R W,EASTWOOD J W. Computer Simulation Using Particles[M]. New York:Adam Hilger, IOP Publishing, 1988.
[15]	QU Guofeng, CHAI Weiping, XIA Jiawen, et al. Nuclear Science and Techniques. 2017, 28(8):47.

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HIAF-BRing的双向涂抹注入模拟

doi: 10.11804/NuclPhysRev.35.01.028

1. 中国科学院近代物理研究所, 兰州 730000;

2. 中国科学院大学, 北京 100049

基金项目: 国家自然科学基金资助项目（11505256，11405237）

作者简介:
曲国峰(1989-),男,吉林人,博士研究生,从事核技术及应用研究;E-mail:qgfnut@impcas.ac.cn

通讯作者: 柴伟平,E-mail:chaiwp@impcas.ac.cn。

收稿日期: 2017-05-03
修回日期: 2017-05-28
刊出日期: 2018-03-20

中图分类号: TL56

关键词:

HIAF-BRing /

双向涂抹注入 /

ORBIT /

重离子加速器

摘要: BRing是HIAF工程的主加速器，其设计流强为每个脉冲内的粒子数1×10¹¹个（²³⁸U³⁴⁺），为了达到此设计流强，注入增益应达到88倍以上。BRing采用了双向涂抹注入方案，其满足BRing的注入增益要求，同时具有注入时间短和累计束分布较均匀而减小了空间电荷效应的特点。双向涂抹注入方案利用水平和垂直两组凸轨磁铁以及倾斜的静电偏转板，在水平相空间和垂直相空间内同时进行涂抹。为了检验双向涂抹注入方案能否达到BRing的设计要求，利用ORBIT程序对双向涂抹注入过程进行了模拟，模拟结果显示，在单次双向涂抹注入113圈的情况下，注入效率为97.7%，注入增益达到110.3倍，满足了BRing流强要求。累积束的分布相对均匀，空间电荷效应引起的工作点漂移约为-0.02，粒子因共振损失风险很小。针对注入束流偏角、切割板角度、工作点偏差和Bump延时等不同注入参数进行了误差分析，结果显示BRing的双向涂抹注入效率对注入参数偏差的容忍度较高。

BRing is the main accelerator of High Intensity heavy Ion Accelerator Facility(HIAF) and its design current is 1×10¹¹ particles per pulse (²³⁸U³⁴⁺). To accumulate beams up to the design current, the injection gain has to reach 88. Two planes painting injection scheme is proposed for BRing. This scheme uses a tilted electrostatic septum and 8 bump magnets to paint beams into horizontal and vertical phase space simultaneously. It can inject enough beams into the ring in a short time and paint beams uniformly. The injection process is simulated using ORBIT code and 113 turns is injected into BRing with an injection efficiency of 97.7% which meets the requirement for beam current of BRing. The accumulated beams are distributed uniformly in transverse and hence have a little tune shift of -0.02 which reduces the risk of beam loss due to the resonance. Errors of injection parameters are analysed and the result shows two planes painting injection scheme has a high tolerance for errors of injection parameters.

English Abstract

Simulation of Two Planes Painting Injection for HIAF-Bring

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

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

Funds: National Natural Science Foundation of China (11505256, 11405237)

Received Date: 2017-05-03
Rev Recd Date: 2017-05-28
Publish Date: 2018-03-20

Keywords:

Abstract: BRing is the main accelerator of High Intensity heavy Ion Accelerator Facility(HIAF) and its design current is 1×10¹¹ particles per pulse (²³⁸U³⁴⁺). To accumulate beams up to the design current, the injection gain has to reach 88. Two planes painting injection scheme is proposed for BRing. This scheme uses a tilted electrostatic septum and 8 bump magnets to paint beams into horizontal and vertical phase space simultaneously. It can inject enough beams into the ring in a short time and paint beams uniformly. The injection process is simulated using ORBIT code and 113 turns is injected into BRing with an injection efficiency of 97.7% which meets the requirement for beam current of BRing. The accumulated beams are distributed uniformly in transverse and hence have a little tune shift of -0.02 which reduces the risk of beam loss due to the resonance. Errors of injection parameters are analysed and the result shows two planes painting injection scheme has a high tolerance for errors of injection parameters.

引用本文:

Citation:

QU Guofeng, XIA Jiawen, YANG Jiancheng, LI Zhongshan, DU Heng, GE Wenwen, ZHENG Wenheng, LI Xiaoni, HU Xuejing, CHAI Weiping. Simulation of Two Planes Painting Injection for HIAF-Bring[J]. Nuclear Physics Review, 2018, 35(1): 28-33. doi: 10.11804/NuclPhysRev.35.01.028