Preliminary study of the higher-harmonic cavity for HLS- II
Preliminary study of the higher-harmonic cavity for HLS- II
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DOI：
10.1088/1674-1137/36/9/017
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发表时间：
2012-09
影响因子：
3.6
通讯作者：
C. Wu 吴;H. FAN 樊;L. Wang 王;G. LIU 刘;Guang-Yao 光耀 Feng 冯;W. Li 李;R. Bosch
中科院分区：
文献类型：
--
作者：
C. Wu 吴;H. FAN 樊;L. Wang 王;G. LIU 刘;Guang-Yao 光耀 Feng 冯;W. Li 李;R. Bosch
合肥光源-II将采用高次谐波腔来延长光束寿命并抑制耦合束不稳定性。在本文中，粒子跟踪模型模拟的结果证实了谐振腔中的调谐可以抑制寄生耦合束不稳定性。计算得出的寿命改善因子大于 2.5。设计了三次和四次谐波腔。特别是，吸收器和天线耦合器应用于谐波腔中以抑制高阶模式。最后，HLS-II 将使用类似于 Duke 射频腔的四次谐波腔。
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.