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Photocathode operation of a thermionic RF gun

Thorin, Sara LU ; Cutic, Nino LU ; Lindau, Filip LU ; Werin, Sverker LU and Curbis, Francesca LU orcid (2009) In Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 606(3). p.291-295
Abstract
The thermionic RF gun using a BaO cathode at the MAX-lab linac injector has been successfully commissioned for additional operation as a photocathode gun. By retaining the BaO cathode, lowering the temperature below thermal emission and illuminating it with a UV (263 nm) 9 ps laser pulse a reduced emittance and enhanced emission control has been achieved. Measurements show a normalised emittance of 5.5 mm mrad at 200 pC charge and a maximum quantum efficiency of 1.1×10-4. The gun is now routinely switched between storage ring injections in thermionic mode and providing a beam for the MAX-lab test FEL in photocathode mode.
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
volume
606
issue
3
pages
291 - 295
publisher
Elsevier
external identifiers
  • wos:000268453600008
  • scopus:67649657748
ISSN
0167-5087
DOI
10.1016/j.nima.2009.05.004
language
English
LU publication?
yes
id
7e1fabc8-8b3c-45a4-b01f-1e7bee527096 (old id 1455326)
date added to LUP
2016-04-01 13:58:23
date last changed
2025-10-14 11:27:26
@article{7e1fabc8-8b3c-45a4-b01f-1e7bee527096,
  abstract     = {{The thermionic RF gun using a BaO cathode at the MAX-lab linac injector has been successfully commissioned for additional operation as a photocathode gun. By retaining the BaO cathode, lowering the temperature below thermal emission and illuminating it with a UV (263 nm) 9 ps laser pulse a reduced emittance and enhanced emission control has been achieved. Measurements show a normalised emittance of 5.5 mm mrad at 200 pC charge and a maximum quantum efficiency of 1.1×10-4. The gun is now routinely switched between storage ring injections in thermionic mode and providing a beam for the MAX-lab test FEL in photocathode mode.}},
  author       = {{Thorin, Sara and Cutic, Nino and Lindau, Filip and Werin, Sverker and Curbis, Francesca}},
  issn         = {{0167-5087}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{291--295}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment}},
  title        = {{Photocathode operation of a thermionic RF gun}},
  url          = {{http://dx.doi.org/10.1016/j.nima.2009.05.004}},
  doi          = {{10.1016/j.nima.2009.05.004}},
  volume       = {{606}},
  year         = {{2009}},
}