Plasma ignition and steady state simulations of the Linac4 H<sup>-</sup> ion source

S. Mattei, M. Ohta, M. Yasumoto, Akiyoshi Hatayama, J. Lettry, A. Grudiev

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The RF heating of the plasma in the Linac4 H<sup>-</sup> ion source has been simulated using a particle-in-cell Monte Carlo collision method. This model is applied to investigate the plasma formation starting from an initial low electron density of 10<sup>12</sup> m<sup>-3</sup> and its stabilization at 10<sup>18</sup> m<sup>-3</sup>. The plasma discharge at low electron density is driven by the capacitive coupling with the electric field generated by the antenna, and as the electron density increases the capacitive electric field is shielded by the plasma and induction drives the plasma heating process. Plasma properties such as e<sup>-</sup>/ion densities and energies, sheath formation, and shielding effect are presented and provide insight to the plasma properties of the hydrogen plasma.

Original languageEnglish
Article number02B115
JournalReview of Scientific Instruments
Volume85
Issue number2
DOIs
Publication statusPublished - 2014 Feb 1

Fingerprint

Ion sources
ion sources
ignition
Ignition
Plasmas
simulation
Carrier concentration
plasma heating
electric fields
hydrogen plasma
Electric fields
Plasma heating
sheaths
plasma jets
shielding
induction
antennas
stabilization
Shielding
heating

ASJC Scopus subject areas

  • Instrumentation

Cite this

Mattei, S., Ohta, M., Yasumoto, M., Hatayama, A., Lettry, J., & Grudiev, A. (2014). Plasma ignition and steady state simulations of the Linac4 H<sup>-</sup> ion source. Review of Scientific Instruments, 85(2), [02B115]. https://doi.org/10.1063/1.4833919

Plasma ignition and steady state simulations of the Linac4 H<sup>-</sup> ion source. / Mattei, S.; Ohta, M.; Yasumoto, M.; Hatayama, Akiyoshi; Lettry, J.; Grudiev, A.

In: Review of Scientific Instruments, Vol. 85, No. 2, 02B115, 01.02.2014.

Research output: Contribution to journalArticle

Mattei, S, Ohta, M, Yasumoto, M, Hatayama, A, Lettry, J & Grudiev, A 2014, 'Plasma ignition and steady state simulations of the Linac4 H<sup>-</sup> ion source', Review of Scientific Instruments, vol. 85, no. 2, 02B115. https://doi.org/10.1063/1.4833919
Mattei, S. ; Ohta, M. ; Yasumoto, M. ; Hatayama, Akiyoshi ; Lettry, J. ; Grudiev, A. / Plasma ignition and steady state simulations of the Linac4 H<sup>-</sup> ion source. In: Review of Scientific Instruments. 2014 ; Vol. 85, No. 2.
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