Abstract
A filament driven multi-cusp negative hydrogen ion source has been developed for proton cyclotrons. In order to increase the H- beam current, the dependences of H- beam current on various design/operating parameters has been studied experimentally and numerically. In this paper, the effects of arc-discharge voltage and current on H- production via the volume production process are investigated by three-dimensional kinetic modeling of electrons in the source plasma and zero-dimensional rate equations. This numerical analysis reproduces the experimental results of H- beam current dependence on the arc-discharge condition, and also gives reasonable explanations for their characteristics.
Original language | English |
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Article number | 2406063 |
Journal | Plasma and Fusion Research |
Volume | 11 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2016 |
Keywords
- EEDF
- KEIO-MARC code
- Medical cyclotron
- Negative hydrogen ion source
ASJC Scopus subject areas
- Condensed Matter Physics