Performance of a DC GaAs photocathode gun for the jefferson lab FEL

被引：49
|
作者：
Siggins, T
Sinclair, C
Bohn, C
Bullard, D
Douglas, D
Grippo, A
Gubeli, J
Krafft, GA
Yunn, B
机构：
[1] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
[2] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2001年 / 475卷 / 1-3期
关键词：
photocathode; FEL; emittance;
D O I：
10.1016/S0168-9002(01)01596-0
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The performance of the 320 kV DC photocathode gun has met the design specifications for the I kW IR Demo FEL at Jefferson Lab. This gun has shown the ability to deliver high average current beam with outstanding lifetimes. The GaAs photocathode has delivered 135 pC per bunch, at a bunch repetition rate of 37.425 MHz, corresponding to 5 mA average CW current. In a recent cathode lifetime measurement, 20 h of CW beam was delivered with an average current of 3.1 mA and 211 C of total charge from a 0.283 cm(2) illuminated spot. The cathode showed a Ile lifetime of 58 h and a 1/e extracted charge lifetime of 618 C. We have achieved quantum efficiencies of 5% from a GaAs wafer that has been in service for 13 months delivering in excess 2400 C with only three activation cycles. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：549 / 553
页数：5
相关论文
共 50 条
  • [31] Rms emittance measurements using Optical Transition Radiation Interferometry at the Jefferson Lab FEL
    Holloway, M. A.
    Fiorito, R. B.
    O'Shea, P. G.
    Shkvarunets, A. G.
    Benson, S. V.
    Brock, W.
    Coleman, J. L.
    Douglas, D.
    Evans, R.
    Evtushenko, P.
    Jordan, K.
    Sexton, D.
    2007 IEEE PARTICLE ACCELERATOR CONFERENCE, VOLS 1-11, 2007, : 1403 - +
  • [32] Lifetime measurements using the Jefferson Lab load-lock electron gun
    Grames, J
    Adderley, P
    Baylac, M
    Brittian, J
    Charles, D
    Clark, J
    Hansknecht, J
    Poelker, M
    Stutzman, M
    Surles-Law, K
    Spin 2004: 16th International Spin Physics Symposium, 2005, : 948 - 952
  • [33] Polarized source performance and developments at Jefferson Lab
    Poelker, M
    Adderley, P
    Clark, J
    Day, A
    Grames, J
    Hansknecht, J
    Hartmann, P
    Kazimi, R
    Rutt, P
    Sinclair, C
    Steigerwald, M
    SPIN 2000, 2001, 570 : 943 - 948
  • [34] Investigation of Electron Beam Parameter in Seeded THz-FEL Amplifier using Photocathode RF Gun
    Shimahashi, Kyohei
    Zen, Heishun
    Okumura, Kensuke
    Shibata, Marie
    Imon, Hidekazu
    Konstantin, Torgasin
    Negm, Hani
    Omer, Mohamed
    Yoshida, Kyohei
    Choi, Yong-Woon
    Kinjo, Ryota
    Masuda, Kai
    Kii, Toshiteru
    Ohgaki, Hideaki
    10TH ECO-ENERGY AND MATERIALS SCIENCE AND ENGINEERING SYMPOSIUM, 2013, 34 : 863 - 870
  • [35] Generation of pre-bunched electron beams in photocathode RF gun for THz-FEL superradiation
    Liu, Shengguang
    Huang, Yen-Chieh
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2011, 637 : S172 - S176
  • [36] High-performance MBE GaAs photocathode
    Yang Zhi
    Chang Benkang
    Zou Jijun
    Wang Hui
    Gao Pin
    OPTOELETRONIC MATERIALS AND DEVICES, PTS 1 AND 2, 2006, 6352
  • [37] Magnetic emittance suppression using a bucking coil for a dc photocathode electron gun
    Nagai, Ryoji
    Hajima, Ryoichi
    Nishimori, Nobuyuki
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2012, 83 (12):
  • [38] Performance of the cold photocathode gun at the electron target of the Heidelberg TSR
    Orlov, DA
    Weigel, U
    Lestinsky, M
    Sprenger, F
    Terekhov, AS
    Schwalm, D
    Wolf, A
    Spin 2004: 16th International Spin Physics Symposium, 2005, : 943 - 947
  • [39] Improving the electrostatic design of the Jefferson Lab 300 kV DC photogun
    Wijethunga, S. A. K.
    Mamun, M. A.
    Suleiman, R.
    Hernandez-Garcia, C.
    Bullard, B.
    Delayen, J. R.
    Grames, J.
    Krafft, G. A.
    Palacios-Serrano, G.
    Poelker, M.
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2022, 93 (07):
  • [40] Development of Cs2Te photocathode rf gun system for compact THz SASE-FEL
    Kuroda, R.
    Ogawa, H.
    Sei, N.
    Toyokawa, H.
    Yagi-Watanabe, K.
    Yasumoto, M.
    Koike, M.
    Yamada, K.
    Yanagida, T.
    Nakajyo, T.
    Sakai, F.
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2008, 593 (1-2): : 91 - 93
12345