Investigation of dependence of power transfer on frequency in the Linac4 negative hydrogen ion source

Wakaba Kobayashi; Kenjiro Nishida; Daniel Noll; Jacques Lettry; Kazuo Hoshino; Akiyoshi Hatayama

doi:10.1585/PFR.14.3401094

Investigation of dependence of power transfer on frequency in the Linac4 negative hydrogen ion source

Wakaba Kobayashi, Kenjiro Nishida, Daniel Noll, Jacques Lettry, Kazuo Hoshino, Akiyoshi Hatayama

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article › peer-review

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 dependence of power transfer on the input parameters (frequency, input power and H₂ gas pressure) by using the plasma impedance prediction model. The results indicate that in the case of frequency = 2MHz, which is often used in the experiment, efficient power supply is seen in the wide range of input power and H₂ gas pressure. Also, if the optimum value of input power and H₂ gas pressure is input, it may be possible to reduce the influence of the frequency value on the power reflection efficiency.

Original language	English
Article number	3401094
Journal	Plasma and Fusion Research
Volume	14
DOIs	https://doi.org/10.1585/PFR.14.3401094
Publication status	Published - 2019

Keywords

Equivalent circuit model
Impedance mathing
Negative ion source
Parameter survey
Plasma impedance
RF plasma

ASJC Scopus subject areas

Condensed Matter Physics

Access to Document

10.1585/PFR.14.3401094

Cite this

@article{47a7916efb5945e78b3213b1c2de15a0,

title = "Investigation of dependence of power transfer on frequency in the Linac4 negative hydrogen ion source",

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 dependence of power transfer on the input parameters (frequency, input power and H2 gas pressure) by using the plasma impedance prediction model. The results indicate that in the case of frequency = 2MHz, which is often used in the experiment, efficient power supply is seen in the wide range of input power and H2 gas pressure. Also, if the optimum value of input power and H2 gas pressure is input, it may be possible to reduce the influence of the frequency value on the power reflection efficiency.",

keywords = "Equivalent circuit model, Impedance mathing, Negative ion source, Parameter survey, Plasma impedance, RF plasma",

author = "Wakaba Kobayashi and Kenjiro Nishida and Daniel Noll and Jacques Lettry and Kazuo Hoshino and Akiyoshi Hatayama",

note = "Publisher Copyright: {\textcopyright} 2019 The Japan Society of Plasma.",

year = "2019",

doi = "10.1585/PFR.14.3401094",

language = "English",

volume = "14",

journal = "Plasma and Fusion Research",

issn = "1880-6821",

publisher = "The Japan Society of Plasma Science and Nuclear Fusion Research (JSPF)",

}

TY - JOUR

T1 - Investigation of dependence of power transfer on frequency in the Linac4 negative hydrogen ion source

AU - Kobayashi, Wakaba

AU - Nishida, Kenjiro

AU - Noll, Daniel

AU - Lettry, Jacques

AU - Hoshino, Kazuo

AU - Hatayama, Akiyoshi

PY - 2019

Y1 - 2019

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 dependence of power transfer on the input parameters (frequency, input power and H2 gas pressure) by using the plasma impedance prediction model. The results indicate that in the case of frequency = 2MHz, which is often used in the experiment, efficient power supply is seen in the wide range of input power and H2 gas pressure. Also, if the optimum value of input power and H2 gas pressure is input, it may be possible to reduce the influence of the frequency value on the power reflection efficiency.

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 dependence of power transfer on the input parameters (frequency, input power and H2 gas pressure) by using the plasma impedance prediction model. The results indicate that in the case of frequency = 2MHz, which is often used in the experiment, efficient power supply is seen in the wide range of input power and H2 gas pressure. Also, if the optimum value of input power and H2 gas pressure is input, it may be possible to reduce the influence of the frequency value on the power reflection efficiency.

KW - Equivalent circuit model

KW - Impedance mathing

KW - Negative ion source

KW - Parameter survey

KW - Plasma impedance

KW - RF plasma

UR - http://www.scopus.com/inward/record.url?scp=85069960214&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85069960214&partnerID=8YFLogxK

U2 - 10.1585/PFR.14.3401094

DO - 10.1585/PFR.14.3401094

M3 - Article

AN - SCOPUS:85069960214

SN - 1880-6821

VL - 14

JO - Plasma and Fusion Research

JF - Plasma and Fusion Research

M1 - 3401094

ER -

Investigation of dependence of power transfer on frequency in the Linac4 negative hydrogen ion source

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this