Drive Laser System of a High Average Current Photocathode Electron Gun in PKU

LU Xiang-Yang; LIN Lin; ZHAO Kui; ZHANG Shi-Wen

Chinese Physics C> 2004, Vol. 28> Issue(8) : 881-884

Drive Laser System of a High Average Current Photocathode Electron Gun in PKU

RF Superconducting Accelerator Laboratory,Institute of Heavy Ion Physics,Peking University,Beijing 100871,China

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Abstract：
The precept of DC-SC photoinjector is to combine a DC photoca thode electron gun and the superconducting cavity together.This scheme is specially adequate to provide the high average beam current.In this paper,authors have described the drive laser system for the DC SC photoinjector of PKU version.This system is mainly composed of GE 100 XHP laser,a passive mode locked Nd:YVO₄ laser,CLX 1100 timing controller from TBP,Switzerland,self developed high efficiency SHG and FHG and laser beam transmission system.After experimental test,the laser power of 266nm is more than 1 W,the jitter between laser pulses and the RF reference signal is less than 1 ps.By use of this laser system,we have observed more than 500μA electron current from Cs₂Te cathode.

References

[1]

. ZHAO Kui , HAO Jian-Kui, HU Yan-Le et al. Nucl. Instrum. Methods,2001, A475: 564 - 5682. QUAN Sheng-Wen, ZHAO Kui, ZHANG Bao-Cheng et al. DC-SC Injector for High Average Power Free Electron Lasers. In: Proceedings of SecondAsian Particle Accelerator Conference. Beijing, 2001. 538 - 5403. ZHAO Kui, QUAN Sheng-Wen, HAO Jian-Kui et al. Nucl. Instrum. Methods, 2001, A483: 125 - 1284. XIANG Rong, QUAN Sheng-Wen, LIN Lin et al. HEP NP, 2004, 28(7) : 771(向蓉，全胜文，林林等.高能物理与核物理,2004,28(7):771)5. Personal Communication with Academician SHEN De-Zhong6. LU Xiang-Yang,LIN Lin, ZHAO Kui et al. High Average Power FHG ofSESAM Nd:YVO4 Laser at 266nm. Sent to: Chinese Optics Letters

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LU Xiang-Yang, LIN Lin, ZHAO Kui and ZHANG Shi-Wen. Drive Laser System of a High Average Current Photocathode Electron Gun in PKU[J]. Chinese Physics C, 2004, 28(8): 881-884.

LU Xiang-Yang, LIN Lin, ZHAO Kui and ZHANG Shi-Wen. Drive Laser System of a High Average Current Photocathode Electron Gun in PKU[J]. Chinese Physics C, 2004, 28(8): 881-884. shu

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Received: 2004-01-13
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

Drive Laser System of a High Average Current Photocathode Electron Gun in PKU

Corresponding author: LU Xiang-Yang,

RF Superconducting Accelerator Laboratory,Institute of Heavy Ion Physics,Peking University,Beijing 100871,China

Received Date: 2004-01-13
Accepted Date: 1900-01-01
Available Online: 2004-08-05

Abstract: The precept of DC-SC photoinjector is to combine a DC photoca thode electron gun and the superconducting cavity together.This scheme is specially adequate to provide the high average beam current.In this paper,authors have described the drive laser system for the DC SC photoinjector of PKU version.This system is mainly composed of GE 100 XHP laser,a passive mode locked Nd:YVO₄ laser,CLX 1100 timing controller from TBP,Switzerland,self developed high efficiency SHG and FHG and laser beam transmission system.After experimental test,the laser power of 266nm is more than 1 W,the jitter between laser pulses and the RF reference signal is less than 1 ps.By use of this laser system,we have observed more than 500μA electron current from Cs₂Te cathode.