Analysis of plasma impedance in the Linac4 negative hydrogen ion source

W. Kobayashi; K. Nishida; S. Mattei; J. Lettry; K. Hoshino; A. Hatayama

doi:10.1063/1.5083763

Analysis of plasma impedance in the Linac4 negative hydrogen ion source

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

Department of Applied Physics and Physico-Informatics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

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 language	English
Title of host publication	6th International Symposium on Negative Ions, Beams and Sources, NIBS 2018
Editors	Andrey Sanin, Yuri Belchenko
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735417809
DOIs	https://doi.org/10.1063/1.5083763
Publication status	Published - 2018 Dec 28
Event	6th International Symposium on Negative Ions, Beams and Sources, NIBS 2018 - Academgorogok, Novosibirsk, Russian Federation Duration: 2018 Sep 3 → 2018 Sep 7

Publication series

Name	AIP Conference Proceedings
Volume	2052
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	6th International Symposium on Negative Ions, Beams and Sources, NIBS 2018
Country/Territory	Russian Federation
City	Academgorogok, Novosibirsk
Period	18/9/3 → 18/9/7

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.5083763

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

Analysis of plasma impedance in the Linac4 negative hydrogen ion source. / Kobayashi, W.; Nishida, K.; Mattei, S. et al.

6th International Symposium on Negative Ions, Beams and Sources, NIBS 2018. ed. / Andrey Sanin; Yuri Belchenko. American Institute of Physics Inc., 2018. 050009 (AIP Conference Proceedings; Vol. 2052).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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., 6th International Symposium on Negative Ions, Beams and Sources, NIBS 2018, Academgorogok, Novosibirsk, Russian Federation, 18/9/3. https://doi.org/10.1063/1.5083763

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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.",

author = "W. Kobayashi and K. Nishida and S. Mattei and J. Lettry and K. Hoshino and A. Hatayama",

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AU - Nishida, K.

AU - Mattei, S.

AU - Lettry, J.

AU - Hoshino, K.

AU - Hatayama, A.

PY - 2018/12/28

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N2 - 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.

AB - 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.

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Analysis of plasma impedance in the Linac4 negative hydrogen ion source

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