Transport of intense ion beams and space charge compensation issues in low energy beam lines (invited)

Journal Article · Wed Feb 15 04:00:00 EST 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3678658· OSTI ID:22066306

Chauvin, N; Delferriere, O; Duperrier, R; Gobin, R; Nghiem, P A. P.; Uriot, D ^[1]

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1. CEA, IRFU, F-91191 Gif-sur-Yvette (France)

Over the last few years, the interest of the international scientific community for high power accelerators in the megawatt range has been increasing. For such machines, the ion source has to deliver a beam intensity that ranges from several tens up to a hundred of mA. One of the major challenges is to extract and transport the beam while minimizing the emittance growth and optimizing its injection into the radio frequency quadrupole. Consequently, it is crucial to perform precise simulations and cautious design of the low energy beam transport (LEBT) line. In particular, the beam dynamics calculations have to take into account not only the space charge effects but also the space charge compensation of the beam induced by ionization of the residual gas. The physical phenomena occurring in a high intensity LEBT and their possible effects on the beam are presented, with a particular emphasis on space charge compensation. Then, beam transport issues in different kind of LEBTs are briefly reviewed. The SOLMAXP particle-in-cell code dedicated to the modeling of the transport of charge particles under a space charge compensation regime is described. Finally, beam dynamics simulations results obtained with SOLMAXP are presented in the case of international fusion materials irradiation facility injector.

• OSTI ID: 22066306
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 2 Vol. 83; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM DYNAMICS
BEAM EMITTANCE
BEAM INJECTION
BEAM TRANSPORT
CHARGED PARTICLES
ION BEAMS
ION SOURCES
IONIZATION
IRRADIATION PLANTS
OPTIMIZATION
RADIOWAVE RADIATION
SIMULATION
SPACE CHARGE
THERMONUCLEAR REACTOR MATERIALS