Amplitude and phase stability studies in a DC superconducting injector

WANG Fang; LIN Lin; ZHANG He; HAO Jian-Kui; ZHANG Bao-Cheng; LIU Ke-Xin

doi:10.1088/1674-1137/35/9/013

Chinese Physics C> 2011, Vol. 35> Issue(9) : 855-858 DOI: 10.1088/1674-1137/35/9/013

Amplitude and phase stability studies in a DC superconducting injector

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Abstract：
The DC superconducting injector will be used in the PKU-THz facility which consists of a DC-gun and a 3+1/2-cell superconducting cavity. The cavity must accelerate the electron beam to 5.82 MeV which is susceptible to perturbations because of its narrow bandwidth. In this paper, the sources and influences of the perturbations in the 3+1/2-cell cavity are discussed. It is shown that the control system is essential for the cavity. The design of a feedback based digital RF low level control system for the 3+1/2-cell cavity is accomplished.

References

[1]

Hao J et al. NIM, A, 2006, 557: 138-1412 YU Kai. Physical Design Study of PKU THz Facility at Peking University. Master Thesis. Peking University, 2010. 74 (in Chinese)3 Mosnier A et al. RF Control System for the SC Cavity of the TESLA Test Facility Injector. In: Proceedings of PAC 1997. Vancouver, BC, Canada, 1997. 2311-23134 Knobloch J et al. Status of the HoBiCaT Superconducting Cavity Test Facility at BESSY. In: Proceedings of EPAC2004. Lucerne, Switzerland, 2004. 970-9725 Simrock S N. Achieving Phase and Amplitude Stability in Pulsed Superconducting Cavities. In: Proceedings of PAC 2001, Chicago, U.S.A, 2001. 473-4776 XU Wen-Can. The Physics and Engineering of the 3.5cell DC-SRF Photo-Injector for the PKU-ERL-FEL-Facility. PHD Thesis. Peking University, 2009. 73 (in Chinese)

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WANG Fang, LIN Lin, ZHANG He, HAO Jian-Kui, ZHANG Bao-Cheng and LIU Ke-Xin. Amplitude and phase stability studies in a DC superconducting injector[J]. Chinese Physics C, 2011, 35(9): 855-858. doi: 10.1088/1674-1137/35/9/013

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Received: 2010-12-02
Revised: 2011-01-19

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沈阳化工大学材料科学与工程学院沈阳 110142

Amplitude and phase stability studies in a DC superconducting injector

Corresponding author: WANG Fang,

Received Date: 2010-12-02
Accepted Date: 2011-01-19
Available Online: 2011-09-05

Abstract: The DC superconducting injector will be used in the PKU-THz facility which consists of a DC-gun and a 3+1/2-cell superconducting cavity. The cavity must accelerate the electron beam to 5.82 MeV which is susceptible to perturbations because of its narrow bandwidth. In this paper, the sources and influences of the perturbations in the 3+1/2-cell cavity are discussed. It is shown that the control system is essential for the cavity. The design of a feedback based digital RF low level control system for the 3+1/2-cell cavity is accomplished.