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First Application of an InfraRed Imaging Video Bolometer to Heliotron J Plasma

Akira MIYASHITA, Kiyofumi MUKAI^1,2), Shinsuke OHSHIMA³⁾, Ryota MATOIKE, Byron J. PETERSON^1,2), Shinji KOBAYASHI³⁾, Hiroyuki OKADA³⁾, Shinichiro KADO³⁾, Takashi MINAMI³⁾, Tohru MIZUUCHI³⁾, Shigeru KONOSHIMA³⁾ and Kazunobu NAGASAKI³⁾

Graduate School of Energy Science, Kyoto University, Kyoto 606-8501, Japan

1)

National Institute for Fusion Science, Toki 509-5292, Japan

2)

The Graduate University for Advanced Studies, SOKENDAI, Kanagawa 240-0193, Japan

3)

Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan

(Received 12 March 2021 / Accepted 20 April 2021 / Published 7 June 2021)

Abstract

The spatial radiation distribution has been measured with an infrared imaging video bolometer (IRVB) in a neutral beam injected (NBI) plasma from the Heliotron J device. The temperature distribution on the IRVB foil is consistent with radiation simulated by the three-dimensional transport code, EMC3-EIRENE. The foil temperature increase is proportional to the radiation intensity measured with an Absolute eXtreme UltraViolet (AXUV) diode diagnostic. These results suggest that the IRVB can be used for plasma radiation measurements in small and medium size devices.

Copyright (c) 2021 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

radiation, imaging bolometer, IRVB, AXUV, Heliotron J

DOI: 10.1585/pfr.16.1202079

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