Ion back-bombardment of GaAs photocathodes inside DC high voltage electron guns

被引：0
|
作者：
Grames, J [1 ]
Adderley, P [1 ]
Brittian, J [1 ]
Charles, D [1 ]
Clark, J [1 ]
Hansknecht, J [1 ]
Poelker, M [1 ]
Stutzman, M [1 ]
Surles-Law, K [1 ]
机构：
[1] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
来源：
2005 IEEE PARTICLE ACCELERATOR CONFERENCE (PAC), VOLS 1-4 | 2005年
关键词：
D O I：
暂无
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
DC high voltage GaAs photoguns are key components at accelerator facilities worldwide. New experiments and new accelerator facilities demand improved performance from these guns, in particular higher current operation and longer photocathode operating lifetime. This conference submission explores bulk GaAs photocathode lifetime as a function of beam current, active photocathode area, laser spot size and the vacuum of the gun and beam line. Lifetime measurements were made at 100 A, a beam current relevant for accelerators like CEBAF, and at beam currents of 1 mA and 5 mA, a regime that is interesting for high current Free Electron Laser (FEL) and Energy Recovery Linac (ERL) operation.
引用
收藏
页码：4114 / 4116
页数：3
相关论文
共 50 条
  • [21] DC High Voltage Conditioning of Photoemission Guns at Jefferson Lab FEL
    Hernandez-Garcia, C.
    Benson, S. V.
    Biallas, G.
    Bullard, D.
    Evtushenko, P.
    Jordan, K.
    Klopf, M.
    Sexton, D.
    Tennant, C.
    Walker, R.
    Williams, G.
    SPIN PHYSICS, 2009, 1149 : 1071 - 1076
  • [22] A HIGH VOLTAGE STABILISED POWER SOURCE FOR ELECTRON BEAM GUNS
    KRIVENKO, VG
    KRAVCHUK, LA
    AUTOMATIC WELDING USSR, 1967, 20 (08): : 85 - &
  • [23] Crossed ExB-fields back-bombardment instability and ion cyclotron heating of gas-discharge plasma-streams
    Fedorov, VM
    Tarakanov, VP
    FUSION TECHNOLOGY, 1999, 35 (1T): : 320 - 324
  • [24] Preparation and performance of transmission-mode GaAs photocathodes as sources for cold dc electron beams
    Pastuszka, S
    Hoppe, M
    Kratzmann, D
    Schwalm, D
    Wolf, A
    Jaroshevich, AS
    Kosolobov, SN
    Orlov, DA
    Terekhov, AS
    JOURNAL OF APPLIED PHYSICS, 2000, 88 (11) : 6788 - 6800
  • [25] Evaluation of niobium as candidate electrode material for dc high voltage photoelectron guns
    BastaniNejad, M.
    Mohamed, Md. Abdullah
    Elmustafa, A. A.
    Adderley, P.
    Clark, J.
    Covert, S.
    Hansknecht, J.
    Hernandez-Garcia, C.
    Poelker, M.
    Mammei, R.
    Surles-Law, K.
    Williams, P.
    PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, 2012, 15 (08):
  • [26] ELECTRON-BOMBARDMENT ION SOURCE WITH HIGH LUMINOSITY
    VASILEVA, NK
    GALL, LN
    KLESHKOV, EM
    PETROVA, EB
    STEPANOV.MS
    FRIDLYAN.GV
    INSTRUMENTS AND EXPERIMENTAL TECHNIQUES-USSR, 1968, (03): : 665 - &
  • [27] Effects of low voltage ionized hydrogen ion bombardment in semi-insulating GaAs
    Wu, Shuang
    Liu, Qian
    Wang, Zhonggang
    Zhang, Zhenhua
    Lu, Zhihong
    Xiong, Rui
    Yao, Jinlei
    Wang, Dengjing
    VACUUM, 2023, 215
  • [28] Operation of Cs-Sb-O activated GaAs in a high voltage DC electron gun at high average current
    Bae, Jai Kwan
    Andorf, Matthew
    Bartnik, Adam
    Galdi, Alice
    Cultrera, Luca
    Maxson, Jared
    Bazarov, Ivan
    AIP ADVANCES, 2022, 12 (09)
  • [29] Evaluation of electropolished stainless steel electrodes for use in DC high voltage photoelectron guns
    BastaniNejad, Mahzad
    Elmustafa, Abdelmageed A.
    Forman, Eric
    Covert, Steven
    Hansknecht, John
    Hernandez-Garcia, Carlos
    Poelker, Matthew
    Das, Lopa
    Kelley, Michael
    Williams, Phillip
    JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A, 2015, 33 (04):
  • [30] Calcium metaphosphate as a target for bombardment of phosphorus by high voltage ion beams
    Hull, DE
    Williams, JH
    REVIEW OF SCIENTIFIC INSTRUMENTS, 1940, 11 (09): : 299 - 299
12345