| Design and optimization of a longitudinal feedback kicker cavity for the HLS-Ⅱ storage ring |
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| 作者姓名： | 徐卫 W. Z. Wu 何多慧 Y. K. Wu |
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| 作者单位： | 1 National Synchrotron Radiation Laboratory (NSRL), University of Science and Technology of China, Hefei 230029, China;;2 Department of Physics, Duke University, Durham, NC 27708-0319, USA |
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| 基金项目： | Supported by National Natural Science Foundation of China (10979045, 11175182, 11175180) |
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| 摘 要： | In the Hefei Light Source (HLS) storage ring, multibunch operation is used to obtain a high luminosity. Multibunch instabilities can severely limit light source performance with a variety of negative impacts, including beam loss, low injection efficiency, and overall degradation of the beam quality. Instabilities of a multibunch beam can be mitigated using certain techniques including increasing natural damping (operating at a higher energy), lowering the beam current, and increasing Landau damping. However, these methods are not adequate to stabilize a multibunch electron beam at a low energy and with a high current. In order to combat beam instabilities in the HLS storage ring, active feedback systems including a longitudinal feedback system (LFB) and a transverse feedback system (TFB) will be developed as part of the HLS upgrade project, the HLS-Ⅱ storage ring project. As a key component of the longitudinal bunch-by-bunch feedback system, an LFB kicker cavity with a wide bandwidth and high shunt impedance is required. In this paper we report our work on the design of the LFB kicker cavity for the HLS-Ⅱ storage ring and present the new tuning and optimization techniques developed in designing this high performance LFB kicker.
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| 关 键 词： | longitudinal feedback system kicker nose cone |
| 收稿时间： | 2012-04-25 |
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