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Title: Space charge compensation in the Linac4 low energy beam transport line with negative hydrogen ions

The space charge effect of low energy, unbunched ion beams can be compensated by the trapping of ions or electrons into the beam potential. This has been studied for the 45 keV negative hydrogen ion beam in the CERN Linac4 Low Energy Beam Transport using the package IBSimu [T. Kalvas et al., Rev. Sci. Instrum. 81, 02B703 (2010)], which allows the space charge calculation of the particle trajectories. The results of the beam simulations will be compared to emittance measurements of an H{sup −} beam at the CERN Linac4 3 MeV test stand, where the injection of hydrogen gas directly into the beam transport region has been used to modify the space charge compensation degree.
Authors:
 [1] ;  [2] ; ; ;  [1] ;  [3] ;  [1] ;  [4]
  1. CERN, Geneva (Switzerland)
  2. (Mexico)
  3. Facultad de Ciencias Fisico-Matematicas, Universidad Autónoma de Sinaloa, Culiacan (Mexico)
  4. (Norway)
Publication Date:
OSTI Identifier:
22253722
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 2; Conference: ICIS 2011: 14. international conference on ion sources, Giardini-Naxos, Sicily (Italy), 12-16 Sep 2011; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 74 ATOMIC AND MOLECULAR PHYSICS; BEAM TRANSPORT; HYDROGEN; HYDROGEN IONS; ION BEAMS; KEV RANGE 10-100; LINEAR ACCELERATORS; MEV RANGE 01-10; SPACE CHARGE