| Preliminary study of the higher-harmoni ccavity for HLS-Ⅱ |
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| 引用本文： | 吴丛凤,樊浩,王琳,刘广超,冯光耀,李为民,R. A. Bosch.Preliminary study of the higher-harmoni ccavity for HLS-Ⅱ[J].中国物理 C,2012,36(9):891-894. |
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| 作者姓名： | 吴丛凤 樊浩 王琳 刘广超 冯光耀 李为民 R. A. Bosch |
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| 作者单位： | 1. National Synchrotron Radiation Laboratory, USTC, Hefei 230029, China;;2. Synchrotron Radiation Center, University of Wisconsin-Madison, 3731 Schneider Drive,Stoughton, Wisconsin 53589, USA |
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| 基金项目： | Supported by National Natural Science Foundation of China (10675116);Major State Basic Research Development Programme of China(2011CB808301) |
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| 摘 要： | A higher-harmonic cavity will be used to increase the beam lifetime and suppress coupled-bunch instabilities for Hefei Light Source-Ⅱ. In this paper, results simulated by the particle-tracking model confirm that tuning in the harmonic cavity may suppress the parasitic coupled-bunch instabilities. The factors calculated for lifetime improvement are larger than 2.5. The 3rd and 4th harmonic cavities have been designed. In particular, the absorbers and antenna couplers are applied in harmonic cavities to damp the higher order modes. Finally, the 4th harmonic cavity similar to the Duke's RF cavity will be used for HLS-Ⅱ.
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| 关 键 词： | harmonic cavity instabilities lifetime improvement HOMs damping |
| 收稿时间： | 2011-11-11 |
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