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

Journal Article · Sat Feb 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4847196· OSTI ID:22253722

Lallement, Jean-Baptiste; Lettry, Jacques; Scrivens, Richard ^[1]; Leon-Monzon, Ildefonso ^[2]; Midttun, Øystein ^[1]

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1. CERN, Geneva (Switzerland)
2. Facultad de Ciencias Fisico-Matematicas, Universidad Autónoma de Sinaloa, Culiacan (Mexico)

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.

• OSTI ID: 22253722
• Journal Information: Review of Scientific Instruments, Vol. 85, 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); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

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