Preliminary study of the higher-harmoni ccavity for HLS-Ⅱ

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WU Cong-Feng, FAN Hao, WANG Lin, LIU Guang-Chao, FENG Guang-Yao and LI Wei-Min. Preliminary study of the higher-harmoni ccavity for HLS-Ⅱ[J]. Chinese Physics C, 2012, 36(9): 891-894. doi: 10.1088/1674-1137/36/9/017
WU Cong-Feng, FAN Hao, WANG Lin, LIU Guang-Chao, FENG Guang-Yao and LI Wei-Min. Preliminary study of the higher-harmoni ccavity for HLS-Ⅱ[J]. Chinese Physics C, 2012, 36(9): 891-894.  doi: 10.1088/1674-1137/36/9/017 shu
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Received: 2011-11-11
Revised: 1900-01-01
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Preliminary study of the higher-harmoni ccavity for HLS-Ⅱ

    Corresponding author: WU Cong-Feng,

Abstract: 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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