Measurement of thickness of film deposited on the plasma-facing wall in the QUEST tokamak by colorimetry

Z. Wang, K. Hanada, N. Yoshida, T. Shimoji, M. Miyamoto, Y. Oya, H. Zushi, H. Idei, K. Nakamura, A. Fujisawa, Y. Nagashima, M. Hasegawa, S. Kawasaki, A. Higashijima, H. Nakashima, T. Nagata, A. Kawaguchi, T. Fujiwara, K. Araki, O. MitaraiA. Fukuyama, Y. Takase, K. Matsumoto

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

After several experimental campaigns in the Kyushu University Experiment with Steady-state Spherical Tokamak (QUEST), the originally stainless steel plasma-facing wall (PFW) becomes completely covered with a deposited film composed of mixture materials, such as iron, chromium, carbon, and tungsten. In this work, an innovative colorimetry-based method was developed to measure the thickness of the deposited film on the actual QUEST wall. Because the optical constants of the deposited film on the PFW were position-dependent and the extinction coefficient k1 was about 1.0-2.0, which made the probing light not penetrate through some thick deposited films, the colorimetry method developed can only provide a rough value range of thickness of the metal-containing film deposited on the actual PFW in QUEST. However, the use of colorimetry is of great benefit to large-area inspections and to radioactive materials in future fusion devices that will be strictly prohibited from being taken out of the limited area.

元の言語英語
記事番号093502
ジャーナルReview of Scientific Instruments
88
発行部数9
DOI
出版物ステータス出版済み - 9 1 2017

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colorimetry
Colorimetry
Facings
Plasmas
radioactive materials
Radioactive materials
metal films
Optical constants
thick films
inspection
stainless steels
chromium
tungsten
extinction
fusion
Tungsten
Chromium
iron
Fusion reactions
Stainless steel

All Science Journal Classification (ASJC) codes

  • Instrumentation

これを引用

Measurement of thickness of film deposited on the plasma-facing wall in the QUEST tokamak by colorimetry. / Wang, Z.; Hanada, K.; Yoshida, N.; Shimoji, T.; Miyamoto, M.; Oya, Y.; Zushi, H.; Idei, H.; Nakamura, K.; Fujisawa, A.; Nagashima, Y.; Hasegawa, M.; Kawasaki, S.; Higashijima, A.; Nakashima, H.; Nagata, T.; Kawaguchi, A.; Fujiwara, T.; Araki, K.; Mitarai, O.; Fukuyama, A.; Takase, Y.; Matsumoto, K.

:: Review of Scientific Instruments, 巻 88, 番号 9, 093502, 01.09.2017.

研究成果: ジャーナルへの寄稿記事

Wang, Z, Hanada, K, Yoshida, N, Shimoji, T, Miyamoto, M, Oya, Y, Zushi, H, Idei, H, Nakamura, K, Fujisawa, A, Nagashima, Y, Hasegawa, M, Kawasaki, S, Higashijima, A, Nakashima, H, Nagata, T, Kawaguchi, A, Fujiwara, T, Araki, K, Mitarai, O, Fukuyama, A, Takase, Y & Matsumoto, K 2017, 'Measurement of thickness of film deposited on the plasma-facing wall in the QUEST tokamak by colorimetry', Review of Scientific Instruments, 巻. 88, 番号 9, 093502. https://doi.org/10.1063/1.5000739
Wang, Z. ; Hanada, K. ; Yoshida, N. ; Shimoji, T. ; Miyamoto, M. ; Oya, Y. ; Zushi, H. ; Idei, H. ; Nakamura, K. ; Fujisawa, A. ; Nagashima, Y. ; Hasegawa, M. ; Kawasaki, S. ; Higashijima, A. ; Nakashima, H. ; Nagata, T. ; Kawaguchi, A. ; Fujiwara, T. ; Araki, K. ; Mitarai, O. ; Fukuyama, A. ; Takase, Y. ; Matsumoto, K. / Measurement of thickness of film deposited on the plasma-facing wall in the QUEST tokamak by colorimetry. :: Review of Scientific Instruments. 2017 ; 巻 88, 番号 9.
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abstract = "After several experimental campaigns in the Kyushu University Experiment with Steady-state Spherical Tokamak (QUEST), the originally stainless steel plasma-facing wall (PFW) becomes completely covered with a deposited film composed of mixture materials, such as iron, chromium, carbon, and tungsten. In this work, an innovative colorimetry-based method was developed to measure the thickness of the deposited film on the actual QUEST wall. Because the optical constants of the deposited film on the PFW were position-dependent and the extinction coefficient k1 was about 1.0-2.0, which made the probing light not penetrate through some thick deposited films, the colorimetry method developed can only provide a rough value range of thickness of the metal-containing film deposited on the actual PFW in QUEST. However, the use of colorimetry is of great benefit to large-area inspections and to radioactive materials in future fusion devices that will be strictly prohibited from being taken out of the limited area.",
author = "Z. Wang and K. Hanada and N. Yoshida and T. Shimoji and M. Miyamoto and Y. Oya and H. Zushi and H. Idei and K. Nakamura and A. Fujisawa and Y. Nagashima and M. Hasegawa and S. Kawasaki and A. Higashijima and H. Nakashima and T. Nagata and A. Kawaguchi and T. Fujiwara and K. Araki and O. Mitarai and A. Fukuyama and Y. Takase and K. Matsumoto",
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AU - Wang, Z.

AU - Hanada, K.

AU - Yoshida, N.

AU - Shimoji, T.

AU - Miyamoto, M.

AU - Oya, Y.

AU - Zushi, H.

AU - Idei, H.

AU - Nakamura, K.

AU - Fujisawa, A.

AU - Nagashima, Y.

AU - Hasegawa, M.

AU - Kawasaki, S.

AU - Higashijima, A.

AU - Nakashima, H.

AU - Nagata, T.

AU - Kawaguchi, A.

AU - Fujiwara, T.

AU - Araki, K.

AU - Mitarai, O.

AU - Fukuyama, A.

AU - Takase, Y.

AU - Matsumoto, K.

PY - 2017/9/1

Y1 - 2017/9/1

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