Improvement of beam macropulse properties using slim thermionic cathode in IAE RF gun

被引：0
|
作者：
Kii, T [1 ]
Miyasako, A [1 ]
Hayashi, S [1 ]
Masuda, K [1 ]
Ohgaki, H [1 ]
Yoshikawa, K [1 ]
Yamazaki, T [1 ]
机构：
[1] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 528卷 / 1-2期
关键词：
free-electron laser; RF gun; electron injector;
D O I：
10.1016/j.nima.2004.04.121
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A long beam macropulse is strongly required for free-electron lasers. RF guns can potentially produce high brightness electron beam using a simple and compact system. However, due to a back-bombardment, a cathode surface is overheated. Thus, it is difficult to maintain a constant beam current and beam energy during a macropulse. The use of a photo cathode with a short-pulsed laser is one of the solutions, but it affects the simplicity and the compactness of the RF guns. We studied a mechanism of back-bombardment and experimentally and numerically found that a low energy component of the back-streaming electrons plays an important role in cathode surface heating. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：408 / 411
页数：4
相关论文
共 50 条
  • [31] Upgrade of X-band thermionic cathode RF gun for Compton scattering X-ray source
    Taniguchi, Yoshihiro
    Sakamoto, Fumito
    Natsui, Takuya
    Yamamoto, Tomohiko
    Hashimoto, Eiko
    Lee, KiWoo
    Uesaka, Mitsuru
    Yoshida, Mitsuhiro
    Higo, Toshiyasu
    Fukuda, Shigeki
    Akemoto, Mitsuo
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2009, 608 (01): : S113 - S115
  • [32] 3-D simulation study for a thermionic RF gun using an FDTD method
    Hama, H
    Hinode, F
    Shinto, K
    Miyamoto, A
    Tanaka, T
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2004, 528 (1-2): : 371 - 377
  • [33] Demonstration of transport of a patterned electron beam produced by diamond pyramid cathode in an rf gun
    Nichols, K. E.
    Andrews, H. L.
    Kim, D.
    Simakov, E. I.
    Conde, M.
    Doran, D. S.
    Ha, G.
    Liu, W.
    Power, J. F.
    Shao, J.
    Whiteford, C.
    Wisniewski, E. E.
    Antipov, S. P.
    Chen, G.
    APPLIED PHYSICS LETTERS, 2020, 116 (02)
  • [34] Spectroscopic Characterization of a Novel RF Excited Plasma Cathode Electron Beam Gun Design
    del Pozo, Sofia
    Ribton, Colin Nigel
    Smith, David Ryan
    IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE, 2014, : 169 - +
  • [35] Properties of quarter-wavelength coaxial cavity for triode-type thermionic RF gun
    Torgasin, Konstantin
    Mishima, Kenta
    Zen, Heishun
    Yoshida, Kohei
    Negm, Hani
    Omer, Muhamed
    Kii, Toshiteru
    Nagasaki, Kazunobu
    Masuda, Kai
    Ohgaki, Hideaki
    JAPANESE JOURNAL OF APPLIED PHYSICS, 2017, 56 (09)
  • [36] Design and beam dynamic simulation of the thermionic RF electron gun with external resonant cavity for transverse emittance reduction
    Saisa-ard, C.
    Rimjaem, S.
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2019, 940 : 243 - 253
  • [37] Helically corrugated waveguide gyrotron traveling wave amplifier using a thermionic cathode electron gun
    Cross, A. W.
    He, W.
    Phelps, A. D. R.
    Ronald, K.
    Whyte, C. G.
    Young, A. R.
    Robertson, C. W.
    Rafferty, E. G.
    Thomson, J.
    APPLIED PHYSICS LETTERS, 2007, 90 (25)
  • [38] Low-emittance radio-frequency electron gun using a gridded thermionic cathode
    Asaka, Takao
    Inagaki, Takahiro
    Magome, Tamotsu
    Nishimori, Nobuyuki
    Otake, Yuji
    Taniuchi, Tsutomu
    Yanagida, Kenich
    Tanaka, Hiroshi
    PHYSICAL REVIEW ACCELERATORS AND BEAMS, 2020, 23 (06):
  • [39] Beam dynamics simulation study for longitudinal bunch length measurement of RF modulated thermionic electron gun at VECC, Kolkata
    Naser, M. Z. A.
    Dechoudhury, S.
    Dutta, D. P.
    Hazra, D.
    Naik, V
    Bandyopadhyay, A.
    JOURNAL OF INSTRUMENTATION, 2022, 17 (02)
  • [40] Design, construction and measurements of an alpha magnet as a solution for compact bunch compressor for the electron beam from Thermionic RF Gun
    Rajabi, A.
    Jazini, J.
    Fathi, M.
    Sharifian, M.
    Shokri, B.
    JOURNAL OF INSTRUMENTATION, 2018, 13
12345