Observation of Arc Trails with Significant Damage due to Glow Discharge Wall Conditioning in the Large Helical Device

被引：0

作者：

Hayashi Y. ^{[1
]}

Masuzaki S. ^{[1
]}

Motojima G. ^{[1
,2
]}

Hwangbo D. ^{[3
]}

Fujiwara Y. ^{[1
]}

Zhao M. ^{[1
]}

the LHD Experiment Group ^{[1
]}

机构：

[1] National Institute for Fusion Science, National Institutes of National Sciences, Toki

[2] The Graduate University for Advanced Studies, SOKENDAI, Toki

[3] Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba

来源：

Plasma and Fusion Research | 2021年 / 16卷

基金：

日本学术振兴会;

关键词：

arcing; glow discharge conditioning; LHD;

D O I：

10.1585/PFR.16.1202061

中图分类号：

学科分类号：

摘要：

We report the observation of arcing damage on the diagnostic shutter during the glow discharge wall conditioning in LHD. The diagnostic system has no experience of plasma discharge produced by electron or ion cyclotron resonance heating or neutral beam injection. The arc trails were observed on the aluminum surface but not on the stainless steel although both materials were exposed to the glow discharge with the same duration. The diﬀerence in work functions between two materials may be a cause to divide the conditions of arcing ignition. © 2021 The Japan Society of Plasma Science and Nuclear Fusion Research

引用

页码：1202061 / 1

共 5 条

[1] Observation of Arc Trails with Significant Damage due to Glow Discharge Wall Conditioning in the Large Helical Device
Hayashi, Yuki
Masuzaki, Suguru
Motojima, Gen
Hwangbo, Dogyun
Fujiwara, Yutaka
Zhao, Mingzhong
PLASMA AND FUSION RESEARCH, 2021, 16
[2] Effect of the RF wall conditioning on the high performance plasmas in the Large Helical Device
Takahashi, H.
Osakabe, M.
Nagaoka, K.
Nakano, H.
Tokitani, M.
Fujii, K.
Murakami, S.
Takeiri, Y.
Seki, T.
Saito, K.
Kasahara, H.
Seki, R.
Kamio, S.
Masuzaki, S.
Mutoh, T.
JOURNAL OF NUCLEAR MATERIALS, 2015, 463 : 1100 - 1103
[3] Development of the plasma operational regime in the large helical device by the various wall conditioning methods
Nishimura, K
Ashikawa, N
Masuzaki, S
Miyazawa, J
Sagara, A
Goto, M
Peterson, BJ
Komori, A
Noda, N
Ida, K
Kaneko, O
Kawahata, K
Kobuchi, T
Kubo, S
Morita, S
Osakabe, M
Sakakibara, S
Sakamoto, R
Sato, K
Shimozuma, T
Takeiri, Y
Tanaka, K
Motojima, O
JOURNAL OF NUCLEAR MATERIALS, 2005, 337 (1-3) : 431 - 435
[4] Real-time wall conditioning and recycling modification utilizing boron and boron nitride powder injections into the Large Helical Device
Lunsford, R.
Masuzaki, S.
Nespoli, F.
Ashikawa, N.
Gilson, E. P.
Gates, D. A.
Ida, K.
Kawamura, G.
Morisaki, T.
Nagy, A.
Oishi, T.
Shoji, M.
Suzuki, C.
Yoshinuma, M.
NUCLEAR FUSION, 2022, 62 (08)
[5] Boron transport simulation using the ERO2.0 code for real-time wall conditioning in the large helical device
Shoji, M.
Kawamura, G.
Romazanov, J.
Kirschner, A.
Eksaeva, A.
Borodin, D.
Masuzaki, S.
Brezinsek, S.
NUCLEAR MATERIALS AND ENERGY, 2020, 25 (25)

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