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Title: Mean transverse energy and response time measurements of GaInP based photocathodes

GaInP, which has a wider band gap than GaAs, is introduced as a photocathode for energy recovery linac (ERL). The wide band gap of material is expected to reduce the heating effect in the thermal relaxation process after high energy excitation. GaInP photocathodes exhibited higher quantum efficiency than GaAs and low thermal emittance as the same as GaAs photocathodes under green laser light irradiation. A short picosecond electron pulse was also achieved with the GaInP photocathode under 532 nm pulse laser irradiation. These experimental results demonstrate that the GaInP photocathode is an important candidate for ERL.
Authors:
 [1] ; ; ; ;  [2] ;  [3] ;  [4] ;  [5]
  1. Institute for Advanced Research, Nagoya University, Nagoya 464-8603 (Japan)
  2. High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan)
  3. Nagoya University Synchrotron Radiation Research Center, Nagoya 464-8603 (Japan)
  4. Nagoya Industrial Science Research Institute, Nagoya 464-0819 (Japan)
  5. (Japan)
Publication Date:
OSTI Identifier:
22314622
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; EXCITATION; GALLIUM ARSENIDES; LASER RADIATION; LASERS; LINEAR ACCELERATORS; PHOTOCATHODES; PULSES; QUANTUM EFFICIENCY; RELAXATION; TIME MEASUREMENT; TRANSVERSE ENERGY