| 涡流型切割磁铁的理论分析和模拟计算 |
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| 引用本文： | 康文,丁小平,韩谦,庞家标,陈森玉.涡流型切割磁铁的理论分析和模拟计算[J].中国物理 C,2001,25(3):264-270. |
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| 作者姓名： | 康文 丁小平 韩谦 庞家标 陈森玉 |
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| 作者单位： | [1]中国科学院高能物理研究所，北京100039 [2]北京大学重离子物理研究所，北京100871 |
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| 摘 要： | 从理论上推导了涡流型切割磁铁的漏场变化规律.以上海同步辐射装置(SSRF)用涡流型切割磁铁为例,进行了分析性计算和讨论,并与OPERA程序模拟计算的结果进行了比较.在此基础上,提出了降低漏场的方法和措施.
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| 关 键 词： | 高能粒子加速器 涡流型切割磁铁 漏场 |
| 收稿时间： | 2000-1-24 |
Theoretical Analysis and Computer Simulation of Eddy-Current Septum Magnets |
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| KANG Wen DING Xiao Ping , HAN Qian PANG Jia Biao CHEN Sen Yu.Theoretical Analysis and Computer Simulation of Eddy-Current Septum Magnets[J].High Energy Physics and Nuclear Physics,2001,25(3):264-270. |
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| Authors: | KANG Wen DING Xiao Ping HAN Qian PANG Jia Biao CHEN Sen Yu |
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| Institution: | KANG Wen 1 DING Xiao Ping 1,2 HAN Qian 1 PANG Jia Biao 1 CHEN Sen Yu 1 1 |
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| Abstract: | The stray field of eddy current septum magnets is analyzed theoretically and also simulated by a computer program. The results from theoretical analysis agree well with those simulated from OPERA program. The maximum of stray field varies inversely with the thickness of septum. It delays some time with respect to the maximum of main field, and the delay time is proportional to square of the thickness of the septum. After stray field increases to its maximum, it starts to decrease very slowly to zero. To reduce stray field fast, one can adopt full sine wave pulse current to power the magnet, The stray field can be reduced to 0.2% at any position and any time by using composite septum (2.4mm Cu+0.6mm Fe). The homogeneity of the main field is superior to 1%. |
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| Keywords: | high energy particle accelerator eddy current septum magnet stray field |
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