Arc Discharge Characteristics of a Long Pulse Ion Source for the KSTAR Neutral Beam Injector

被引：4

作者：

Chang, Doo-Hee ^{[1
]}

Jeong, Seung Ho ^{[1
]}

Jin, Jung-Tae ^{[1
]}

Chang, Dae-Sik ^{[1
]}

Kim, Tae-Seong ^{[1
]}

Lee, Kwang Won ^{[1
]}

In, Sang Ryul ^{[1
]}

Oh, Byung-Hoon ^{[1
]}

Bae, Young-Soon ^{[2
]}

Kim, Jong-Su ^{[2
]}

Park, Young-Min ^{[2
]}

Yang, Hyung-Lyeol ^{[2
]}

Watanabe, Kazuhiro ^{[3
]}

Dairaku, Masayuki ^{[3
]}

Tobari, Hiroyuki ^{[3
]}

Kashiwagi, Mieko ^{[3
]}

Hanada, Masaya ^{[3
]}

Inoue, Takashi ^{[3
]}

机构：

[1] Korea Atom Energy Res Inst KAERI, Nucl Fus Engn Technol Dev Div, Taejon 305353, South Korea

[2] KSTAR Res Ctr, Natl Fus Res Inst NFRI, Taejon 305333, South Korea

[3] Japan Atom Energy Agcy JAEA, Fus Res & Dev Directorate, Naka, Ibaraki 3110193, Japan

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2011年 / 59卷 / 02期

关键词：

Long pulse ion source; KSTAR; Neutral beam injector; Space-charge-limited mode; Filament heating voltage; Arc power;

D O I：

10.3938/jkps.59.275

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A long pulse ion source (LPIS) for the neutral beam injector (NBI) has been developed for the Korea Superconducting Tokamak Advanced Research (KSTAR) superconducting tokamak. The arc discharge characteristics of the ion source were investigated on the first KSTAR neutral beam injector (NBI-1). The ion source consists of a magnetic bucket plasma generator with multi-pole cusp fields and a set of prototype tetrode accelerators with circular apertures. The inner volume of the plasma generator in the LPIS ion source is approximately 47.2 liters. Design requirements for the ion source were a 120 kV/65A deuterium beam and a 300 s pulse length. Arc discharges of the plasma generator with deuterium gases have been controlled by using the space charge-limited mode and have been operated by using a sufficient heating voltage on the cathode filaments. Stable and efficient arc plasmas up to an arc power of 70 kW have been produced by using a constant-power-mode operation of the arc power supply. The reliable operation region of the arc discharges has been investigated for various filament heating voltages, arc powers, and amounts of injected deuterium gas in the LPIS.

引用

页码：275 / 280

页数：6

共 8 条

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