Behavior of negative ion and secondary particles in multi-aperture accelerator

Masashi Kisaki, Pierluigi Veltri, Piero Agostinetti, Katsuyoshi Tsumori, Katsunori Ikeda, Haruhisa Nakano, Gianluigi Serianni, Masaki Osakabe, Kenichi Nagaoka, Yasuhiko Takeiri, Osamu Kaneko

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Abstract

The trajectories of the H-and the secondary particle in a multi-aperture accelerator for negative ion sources were calculated with a 3D numerical code, taking into account non-uniformity in magnetic field and negative ion density, and the heat loading on acceleration grids was estimated. The heat loading on a grounded grid mainly originates from the secondary electron impact and the non-uniform transverse magnetic field enhances the possibility of the secondary electron impacts on the grounded grid. Perveance condition of beamlets strongly depends on the plasma density profile and the direct interception of the H-by an extraction grid is enhanced in the non-uniform plasma case. © 2013 The Japan Society of Plasma Science and Nuclear Fusion Research.
Original languageEnglish
Article number2405060
Pages (from-to)-
JournalPlasma and Fusion Research
Volume8
Issue numberSPL.ISS.1
DOIs
Publication statusPublished - 2013
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Kisaki, M., Veltri, P., Agostinetti, P., Tsumori, K., Ikeda, K., Nakano, H., ... Kaneko, O. (2013). Behavior of negative ion and secondary particles in multi-aperture accelerator. Plasma and Fusion Research, 8(SPL.ISS.1), -. [2405060]. https://doi.org/10.1585/pfr.8.2405060