Preliminary study of electron beam wall loss in photocathode DC injectors

Wu Dai; Xiao Dexin; Li Kai; Liu Yu; Li Peng; Wang Hanbin; Yang Xingfan; Li Ming

doi:10.3788/HPLPB201426.015102

Volume 26 Issue 01

Jan. 2014

Turn off MathJax

Article Contents

Abstract

References

Article Navigation > High Power Laser and Particle Beams > 2014 > 26(01): 015102

Zhou Xiaosong, Shen Huahai, Peng Shuming, et al. Thermal desorption behavior of ion-implanted helium from erbium and scandium films[J]. High Power Laser and Particle Beams, 2012, 24: 1169-1172. doi: 10.3788/HPLPB20122405.1169

Citation:

Wu Dai, Xiao Dexin, Li Kai, et al. Preliminary study of electron beam wall loss in photocathode DC injectors[J]. High Power Laser and Particle Beams, 2014, 26: 015102. doi: 10.3788/HPLPB201426.015102

Citation:

PDF( 2519 KB)

Preliminary study of electron beam wall loss in photocathode DC injectors

doi: 10.3788/HPLPB201426.015102

Wu Dai^1,2,
Xiao Dexin^{2
,
,},
Li Kai²,
Liu Yu²,
Li Peng²,
Wang Hanbin²,
Yang Xingfan²,
Li Ming²

1.
Department of Engineering Physics,Tsinghua University,Beijing 100084,China;
2.
Institute of Applied Electronics,CAEP,P.O.Box 919-1004,Mianyang 621900,China

Received Date: 2013-05-30
Rev Recd Date: 2013-08-21
Publish Date: 2014-01-15

Abstract

Abstract

Ultra-high vacuum (UHV) has been demonstrated as the most important condition for long lifetime GaAs photocathode. To create the UHV environment and extend the GaAs lifetime, the electron beam wall loss in DC injectors is studied in this paper. A DC injector is installed in free electron. laser THz (FEL-THz) facility in CAEP. The study is based on Gaussian distribution model. With theoretical analysis, numerical calculation, dynamic simulation, thermal simulation and prototype experiment discussion, this beam loss is proved to be a few watts, indicating that it is the main reason for vacuum and quantum efficiency loss, which will dramatically decline the beam-out time. Furthermore, the study also indicates that the tube diameter the after the anode should be at least 45 mm.
- free electron laser THz facility,
- Gaussian distribution,
- electron beam wall loss,
- GaAs photocathode,
- quantum efficiency

FullText(HTML)

References(0)

References

Relative Articles

[1]	Fu Yingjie, Dong Luokang, Qin Shenyi, He Mengbing, Ye Mingtian, Wang Zhen, Li Zhenghong. Operating characteristics of electrically triggered vacuum surface flashover switch[J]. High Power Laser and Particle Beams, 2024, 36(11): 115003. doi: 10.11884/HPLPB202436.240325
[2]	Zhang Bide, Li Wanshun, Wang Bingchuan. Numerical study of atmospheric pressure He plasma jets with dual-channel inlet under different electrode structures[J]. High Power Laser and Particle Beams, 2022, 34(8): 085003. doi: 10.11884/HPLPB202234.210533
[3]	Jiang Yuanyuan, Wang Yanhui, Gao Caihui, Wang Dezhen. Numerical study of atmospheric pressure Ar plasma jets under different electrode structures[J]. High Power Laser and Particle Beams, 2021, 33(6): 065011. doi: 10.11884/HPLPB202133.210148
[4]	Shen Yuan, Wang Ruixue, Zhang Cheng, Fang Zhi, Shao Tao. Characterization of atmospheric pressure helium plasma jet driven by microsecond pulse[J]. High Power Laser and Particle Beams, 2016, 28(05): 055001. doi: 10.11884/HPLPB201628.055001
[5]	Chen Lei, Yang Lin, Wan Xiang, Jin Dazhi, Xiang Wei, Tan Xiaohua. Characteristics of pulsed discharge plasma using triple probe[J]. High Power Laser and Particle Beams, 2015, 27(04): 045007. doi: 10.11884/HPLPB201527.045007
[6]	Dang Tengfei, Yin Jiahui, Sun Fengju, Wang Zhiguo, Jiang Xiaofeng, Zeng Jiangtao, Wei Hao, Qiu Aici. Influence of electrode structure on breakdown characteristics of trigatron switch[J]. High Power Laser and Particle Beams, 2015, 27(06): 065004. doi: 10.11884/HPLPB201527.065004
[7]	Luo Weixi, Wang Liangping, Wu Gang, Zhang Xinjun, Cong Peitian, Zeng Zhengzhong. Experimental study on performance parameters of plasma source for the plasma opening switch on QiangguangⅠgenerator[J]. High Power Laser and Particle Beams, 2014, 26(08): 085104. doi: 10.11884/HPLPB201426.085104
[8]	Sun Jianfeng, Sun Jiang, Qiu Aici, Zhang Pengfei, Yang Hailiang, Li Jingya, Yin Jiahui, Hu Yang, Jin Liang. Effect of plasma density on working characteristics of plasma-filled rod-pinch diode[J]. High Power Laser and Particle Beams, 2014, 26(11): 115009. doi: 10.11884/HPLPB201426.115009
[9]	Liu Longchen, Zhang Qiaogen, Liu Xuandong, Tong Xin, Wang Zhe. Electric field distribution characteristics of multi-gap gas switch[J]. High Power Laser and Particle Beams, 2012, 24(03): 602-606. doi: 10.3788/HPLPB20122403.0602
[10]	Luo Weixi, Zeng Zhengzhong, Lei Tianshi, Wang Liangping, Hu Yixiang, Sun Tieping, Huang Tao. Measurement of performance parameters of plasma source for plasma opening switch on Qiangguang-Ⅰ generator[J]. High Power Laser and Particle Beams, 2012, 24(05): 1195-1200. doi: 10.3788/HPLPB20122405.1195
[11]	chen lei, jin dazhi, cheng liang, shi lei, tan xiaohua, dai jingyi, hu side. Diagnosis of plasmas generated by pulsed vacuum arc discharge at hydrogen impregnated electrodes[J]. High Power Laser and Particle Beams, 2011, 23(05): 0- .
[12]	li hua, chen yaohong, lin fuchang, peng bo. Lifetime characteristics of metallized film pulsed capacitors[J]. High Power Laser and Particle Beams, 2010, 22(04): 0- .
[13]	cao zhurong, yang zhenghua, bai xiaohong, zhang haiying, liu shenye, ding yongkun. Effect of screen-electrode structures on MCP imager vacuum-gap discharge[J]. High Power Laser and Particle Beams, 2010, 22(06): 0- .
[14]	jiao chun-ye, gu yu-qiu, wu yu-chi, liu hong-jie, wang jian, wen tian-shu, wen xian-lun, he ying-ling, hong wei, huang wen-zhong. Diagnostic research of stimulated Raman back scattering in ultrashort-ultraintense laser interaction with gas target[J]. High Power Laser and Particle Beams, 2008, 20(10): 0- .
[15]	zhu yong-hong, wu wei-dong, lu xiao-man, tang yong-jian, sun wei-guo. Diagnosis of hydrogen plasmas at low temperature and low pressure by spectroscopy and Langmuir probe[J]. High Power Laser and Particle Beams, 2008, 20(04): 0- .
[16]	yuan yu-fei, meng lin, zhou chang-geng, hu yong-hong, zhang qin-long. Plasma density measurement of electron cyclotron resonance ion source for neutron generator[J]. High Power Laser and Particle Beams, 2007, 19(12): 0- .
[17]	wang shuai, mao ming, wang you-nian. One-dimension hydrodynamics simulation of an inductively coupled plasma[J]. High Power Laser and Particle Beams, 2006, 18(01): 0- .
[18]	chen lin, sun cheng-wei, jiang wei, wang gang-hua, wu shou-dong, yao bin, li ye, xu min. Research of 100 kA microsecond-conduction-time plasma opening switch[J]. High Power Laser and Particle Beams, 2005, 17(01): 0- .
[19]	chen yu-lan, zeng zheng-zhong, kuai bin, qiu ai-ci, cong pei-tian, liang tian-xue, wang liang-ping, sun feng-ju, yin jia-hui. Measurement of low-temperature plasma density with charge collectors[J]. High Power Laser and Particle Beams, 2005, 17(02): 206- .