Timing Jitter Sensitivity on Beam Dynamics in Photocathode RF Gun

DU Qiang; He Xiao-Zhong; HUANG Wen-Hui; LI Jian-Min; TANG Chuan-Xiang; SUN Da-Rui; DAI Jian-Ping

Chinese Physics C> 2006, Vol. 30> Issue(S1) : 34-36

Timing Jitter Sensitivity on Beam Dynamics in Photocathode RF Gun

Department of Engineering Physics, Tsinghua University, Beijing 100084, China2 Institute of High Energy Physics, CAS, Beijing 100049, China

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Abstract：
One of the crucial factors for the beam quality of photocathode RF gun is the relative timing jitter between the laser pulse and the RF phase. This paper introduces the sub-picosecond timing jitter measurement and the feedback control technologies, analyzing beam quality influence caused by the jitter, and acquired practical experience for using a PLL to reduce the laser pulse's phase noise, so as to solve the synchronization problem between the laser beam and the RF phase in the photocathode RF gun.

References

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. TANG C X, HUANG W H, CHEN H B. Researches of Thomson Scattering X-Ray Source at Tsinghua University.In: Free Electron Laser Conf, 2004. 622—6242. HE Xiao-Zhong, HUANG Wen-Hui, TANG Chuan-Xianget al. HEP NP, 2004, 28(9): 1007—1012(in Chinese)(何小中，黄文会，唐传祥等.高能物理.与核物理, 2004, 28(9):1007-1012)3. HUANG Wen-Hui, HE Xiao-Zhong, HUANG Gang et al.HEP NP, 2004, 28(4): 446—450(in Chinese)(黄文会，何小中，黄刚等.高能物理.与核物理，2004, 28(4):446-450)4. Rodwell M J W, Bloom D M, Weingarten K J. IEEE. J.Quantum Electron, 1989, 25(4): 817—8275. Travier C. Nucl. Instrum. Methods, 1994, A340: 26—396. Haus H A, Mecozzi A. IEEE J. Quantum Electronics, 1993,29(3): 983—9967. von der Linde D. Appl. Phys., 1986, B39: 201—2178. Kobayashi K, Miura T, ZHANG Zhi-Gang. Nuclear In-strum. Methods, 2000, A445: 239—243

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DU Qiang, He Xiao-Zhong, HUANG Wen-Hui, LI Jian-Min, TANG Chuan-Xiang, SUN Da-Rui and DAI Jian-Ping. Timing Jitter Sensitivity on Beam Dynamics in Photocathode RF Gun[J]. Chinese Physics C, 2006, 30(S1): 34-36.

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Received: 2005-12-06
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Timing Jitter Sensitivity on Beam Dynamics in Photocathode RF Gun

Corresponding author: DU Qiang,

Department of Engineering Physics, Tsinghua University, Beijing 100084, China2 Institute of High Energy Physics, CAS, Beijing 100049, China

Received Date: 2005-12-06
Accepted Date: 1900-01-01
Available Online: 2006-01-04

Abstract: One of the crucial factors for the beam quality of photocathode RF gun is the relative timing jitter between the laser pulse and the RF phase. This paper introduces the sub-picosecond timing jitter measurement and the feedback control technologies, analyzing beam quality influence caused by the jitter, and acquired practical experience for using a PLL to reduce the laser pulse's phase noise, so as to solve the synchronization problem between the laser beam and the RF phase in the photocathode RF gun.