| 中国散裂中子源快循环同步加速器壁电流探测系统 |
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| 引用本文： | 孙纪磊,李芳,王安鑫,徐韬光.中国散裂中子源快循环同步加速器壁电流探测系统[J].强激光与粒子束,2018,30(12):125103-1-125103-6. |
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| 作者姓名： | 孙纪磊 李芳 王安鑫 徐韬光 |
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| 作者单位： | 1.中国科学院 高能物理研究所, 广东 东莞 523803 |
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| 基金项目： | 国家重大科学装置工程——中国散裂中子源项目 |
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| 摘 要： | 在中国散裂中子源工程中, 快循环同步加速器负责将剥离注入的能量为80MeV的质子束加速至1.6GeV后引出。在快循环同步加速器上共安装了两台壁电流探测器, 用来观测束流从注入至引出过程中束团在时域上的变化情况。详细介绍了壁电流探测器在陶瓷间隙、磁性材料和匹配电阻等方面的设计考虑, 以达到带宽满足百kHz到30 MHz的设计目标, 并对实际带束流测量结果进行分析讨论。经实际在线运行测试, 此壁电流探测器完全满足束流调试及运行需要。
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| 关 键 词： | 壁电流 纵向束团测量 宏观包络 单束团 快循环同步加速器 |
| 收稿时间： | 2018-08-20 |
Design of the wall current monitor system at CSNS rapid cycling synchrotron |
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| Affiliation: | 1.Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, China2.Dongguan Neutron Science Center, Dongguan 523803, China |
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| Abstract: | Wall current monitors (WCMs) were designed and built for the rapid cycling synchrotron (RCS) of China Spallation Neutron Source (CSNS).The WCMs are used to measure longitudinal bunch shapes in the macro and micro view, calculate longitudinal emittance, and diagnose beam instabilities.The key parameters (e.g., size of the ceramic gap, selection of the resistor and the magnetic materials) of designing a WCM are discussed in this article.The bandwidth of the RCS-WCM can be up to 500 MHz during the lab test, while 30 MHz is required for online operation.The WCM system performed quite well during the beam commissioning and the normal operation of the RCS, beam injection, macro envelope of the accelerating period, and the shape of a single bunch can be observed clearly and accurately. |
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