Design and optimization of a longitudinal feedback kicker cavity for the HLS-Ⅱ storage ring

XU Wei; HE Duo-Hui

doi:10.1088/1674-1137/37/3/037003

Chinese Physics C> 2013, Vol. 37> Issue(3) : 037003 DOI: 10.1088/1674-1137/37/3/037003

Design and optimization of a longitudinal feedback kicker cavity for the HLS-Ⅱ storage ring

XU Wei ^, ,
HE Duo-Hui

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Abstract：
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.

References

[1]

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XU Wei and HE Duo-Hui. Design and optimization of a longitudinal feedback kicker cavity for the HLS-Ⅱ storage ring[J]. Chinese Physics C, 2013, 37(3): 037003. doi: 10.1088/1674-1137/37/3/037003

XU Wei and HE Duo-Hui. Design and optimization of a longitudinal feedback kicker cavity for the HLS-Ⅱ storage ring[J]. Chinese Physics C, 2013, 37(3): 037003. doi: 10.1088/1674-1137/37/3/037003 shu

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Received: 2012-04-25
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Design and optimization of a longitudinal feedback kicker cavity for the HLS-Ⅱ storage ring

Corresponding author: XU Wei,

Received Date: 2012-04-25

Accepted Date: 1900-01-01

Available Online: 2013-03-05

Abstract: 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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Design and optimization of a longitudinal feedback kicker cavity for the HLS-Ⅱ storage ring

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