Analysis of plasma impedance in the Linac4 negative hydrogen ion source

W. Kobayashi, K. Nishida, S. Mattei, J. Lettry, Kazuo Hoshino, Akiyoshi Hatayama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Linac4 is radio frequency (RF) driven type negative hydrogen H- ion source. In the RF system, it is required to match the impedance between the RF-system and plasma loading. In order to match the impedance, it is essential to analyze the plasma impedance. In this study, we analyze the plasma impedance by using the Electro-Magnetic Particle in Cell model. As a result, plasma impedance calculated by the Electro-Magnetic Particle in Cell model agrees qualitatively with one calculated by fluid model model in the steady state. On the other hand, plasma impedance calculated by the numerical simulation code is significantly different from one calculated by the zero dimensional equivalent circuit model during plasma ignition. The results show that the kinetic effects are necessary especially during plasma ignition. It is useful to propose more efficiency power transfer.

Original languageEnglish
Title of host publication6th International Symposium on Negative Ions, Beams and Sources, NIBS 2018
EditorsAndrey Sanin, Yuri Belchenko
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735417809
DOIs
Publication statusPublished - 2018 Dec 28
Event6th International Symposium on Negative Ions, Beams and Sources, NIBS 2018 - Academgorogok, Novosibirsk, Russian Federation
Duration: 2018 Sep 32018 Sep 7

Publication series

NameAIP Conference Proceedings
Volume2052
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference6th International Symposium on Negative Ions, Beams and Sources, NIBS 2018
CountryRussian Federation
CityAcademgorogok, Novosibirsk
Period18/9/318/9/7

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kobayashi, W., Nishida, K., Mattei, S., Lettry, J., Hoshino, K., & Hatayama, A. (2018). Analysis of plasma impedance in the Linac4 negative hydrogen ion source. In A. Sanin, & Y. Belchenko (Eds.), 6th International Symposium on Negative Ions, Beams and Sources, NIBS 2018 [050009] (AIP Conference Proceedings; Vol. 2052). American Institute of Physics Inc.. https://doi.org/10.1063/1.5083763