RF deflecting cavity design for bunch length measurement of photoinjector at Tsinghua University

SHI Jia-Ru; CHEN Huai-Bi; TANG Chuan-Xiang; HUANG Wen-Hui; DU Ying-Chao; ZHENG Shu-Xin; REN Li

doi:10.1088/1674-1137/32/10/014

Chinese Physics C> 2008, Vol. 32> Issue(10) : 837-841 DOI: 10.1088/1674-1137/32/10/014

RF deflecting cavity design for bunch length measurement of photoinjector at Tsinghua University

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Abstract：
RF deflecting cavity can be used for bunch length measurement and is designed to diagnose the beam produced by the photocathode electron gun which was built at Tsinghua University for the Thomson scattering experiment. Detailed discussion and calculation for measuring the 3.5 MeV bunch and another with further acceleration to 50 MeV, which is under development, are presented. A standing-wave deflecting cavity working at 2856 MHz is designed and the power feeding system has been planned.

References

[1]

. HE Xiao-Zhong et al. HEP NP, 2006, 30(Supp.I): 81-83(in Chinese)2. DU Ying-Chao et al. Chinese Phys. Lett., 2007, 24: 18763. TANG Chuan-Xiang et al. Design of a Source to Supply Ultra-Fast Electron and X-Ray Pulses. In: Proceedings of PAC 2007. Albuquerque, USA. 2007. 1046-10484. WANG X J et al. NIM A, 1995, 356: 159-1665. Akre R et al. A Transverse RF Deecting Structure forBunch Length and Phase Space Diagnostics. In: Proceedings of PAC 2001. Chicago, USA. 2001. 2353-23556. Akre R et al. Bunch Length Measurements Using a Transverse RF Deecting Structure in the SLAC Linac. In: Proceedings of EPAC 2002. Paris, France. 2002. 1882-1887. Emma P et al. Initial Commissioning Experience with the LCLS Injector. In Proceedings of PAC 2007. Albuquerque,USA. 2007. 1302-13048. Alesini D et al. NIM A, 2006, 568: 488-5029. England R J et al. X-Band Dipole Mode Deecting Cavityfor the UCLA Neptune Beamline. In: Proceedings of PAC2005. Knoxville, USA. 2005. 2672-267410. LI D et al. Calculations of External Coupling to a SingleCell RF Cavity. In: Proceedings of LINAC 1998. Chicago,USA. 1998. 977-979

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SHI Jia-Ru, CHEN Huai-Bi, TANG Chuan-Xiang, HUANG Wen-Hui, DU Ying-Chao, ZHENG Shu-Xin and REN Li. RF deflecting cavity design for bunch length measurement of photoinjector at Tsinghua University[J]. Chinese Physics C, 2008, 32(10): 837-841. doi: 10.1088/1674-1137/32/10/014

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Received: 2007-11-16
Revised: 2008-02-21

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沈阳化工大学材料科学与工程学院沈阳 110142

RF deflecting cavity design for bunch length measurement of photoinjector at Tsinghua University

Corresponding author: SHI Jia-Ru,

Received Date: 2007-11-16
Accepted Date: 2008-02-21
Available Online: 2008-10-05

Abstract:

RF deflecting cavity can be used for bunch length measurement and is designed to diagnose the beam produced by the photocathode electron gun which was built at Tsinghua University for the Thomson scattering experiment. Detailed discussion and calculation for measuring the 3.5 MeV bunch and another with further acceleration to 50 MeV, which is under development, are presented. A standing-wave deflecting cavity working at 2856 MHz is designed and the power feeding system has been planned.