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Title: A novel system for measurement of the transverse electron momentum distribution from photocathodes

The transverse momentum of electrons produced by a photocathode contributes significantly to the performance of several different types of accelerator-based light sources, such as Free Electron Lasers, as well as systems designed for ultrafast electron diffraction and dynamic transmission electron microscopy. Minimization of the transverse emittance from photocathodes is the subject of intensive research, and therefore measurement of this parameter is of great importance. Here, we describe a simple system that offers real time measurements of transverse emittance and can be easily integrated into the photocathode fabrication process.
Authors:
; ; ;  [1] ;  [2]
  1. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  2. SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)
Publication Date:
OSTI Identifier:
22392332
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCELERATORS; DISTRIBUTION; ELECTRON DIFFRACTION; ELECTRONS; FABRICATION; FREE ELECTRON LASERS; LIGHT SOURCES; PERFORMANCE; PHOTOCATHODES; TIME MEASUREMENT; TRANSMISSION ELECTRON MICROSCOPY; TRANSVERSE MOMENTUM