Plasma ignition and steady state simulations of the Linac4 H- ion source

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

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15 Citations (Scopus)

Abstract

The RF heating of the plasma in the Linac4 H- 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 1012 m-3 and its stabilization at 1018 m-3. 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-/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

ASJC Scopus subject areas

  • Instrumentation

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