| 超导加速器CW模式的高阶模初步分析 |
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| 引用本文： | 鲁向阳,金晓,向蓉,吴文忠,林林,赵夔.超导加速器CW模式的高阶模初步分析[J].强激光与粒子束,2005,17(3):466-468. |
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| 作者姓名： | 鲁向阳 金晓 向蓉 吴文忠 林林 赵夔 |
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| 作者单位： | 北京大学,重离子物理研究所,北京,100871;中国工程物理研究院,应用电子学研究所,四川,绵阳,621900 |
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| 基金项目： | 国家自然科学基金 “NSAF”联合基金资助课题(10276001) |
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| 摘 要： | 超导加速器由于具有极高的Q值，因此表现出较强的腔束相互作用，尤其是在以CW模式运行下，严重时会产生束流崩溃(BBU)效应。德国TESLA式的9-cell超导串腔在束流负载为1 mA，束团重复频率为81.25 MHz情况下，对其高阶模的产生及相应的功率水平进行了分析。结果表明：对于该腔的主要高阶模，谐振偏差值在π/4以上，束流没有发生谐振，高阶模功率在mW量级。
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| 关 键 词： | 超导腔 高阶模 CW模式 |
| 文章编号： | 1001-4322(2005)03-0466-03 |
| 收稿时间： | 2004/5/9 |
| 修稿时间： | 2004年5月9日 |
Primary study of high order mode for superconducting accelerator under CW operation |
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| LU Xiang-yang,JIN Xiao,XIANG Rong,WU Wen-zhong,LIN Lin,ZHAO Kui.Primary study of high order mode for superconducting accelerator under CW operation[J].High Power Laser and Particle Beams,2005,17(3):466-468. |
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| Authors: | LU Xiang-yang JIN Xiao XIANG Rong WU Wen-zhong LIN Lin ZHAO Kui |
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| Institution: | 1. Institute of Heavy Ion Physics, Peking University, Beijing 100871, China；2. Institute of Applied Electronics, CAEP, P.O. Box 919-1014, Mianyang 621900, China |
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| Abstract: | The superconducting accelerator has high quality factor, so the decay time of the field emitted by beam is much longer than that in normal conducting cavity. This results in the strong interaction between the SC cavity and the beam through it. The high order mode field excited by short bunches could effect the beam and cause beam break up. In this paper, the total high order mode power of TESLA 9-cell cavity with the beam load of 1 mA was estimated.The result shows that the phase shifts of high ovder mode, refering to major eigen frequencies of the cavity, are more than π/4. There would be no resonant buildup. The total high order module power is in mW level. |
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| Keywords: | Superconducting cavity High order mode CW operation |
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