[Table of Contents]

Plasma and Fusion Research

Volume 7, 2405039 (2012)

Regular Articles

Foil Calibration for IR Imaging Bolometer by Laser Irradiation
Ryuichi SANO, Byron J. PETERSON1), Evgeny A. DRAPIKO1), Dongcheol SEO2), Yuji YAMAUCHI3) and Tomoaki HINO3)
Graduate School of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
National Fusion Research Institute, Daejeon 305-806, Republic of Korea
Faculty of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan
(Received 9 December 2011 / Accepted 4 March 2012 / Published 10 May 2012)


The IR imaging video bolometer (IRVB) provides the power distribution of plasma radiation. The radiation distribution is obtained from the temperature distribution on the bolometer foil. It is necessary to calibrate between the temperature distribution and the incident radiation power on the bolometer foil. This paper describes a new calibration technique for the foil which we have developed. The bolometer foil was irradiated with a He-Ne laser and the temperature distribution was measured by an IR camera while changing the irradiation position. The temperature distribution measured was analyzed by the comparison with the results calculated by FEM. We repeated this comparison while changing the parameters such as effective foil thickness and effective emissivity in the calculation until the calculated distribution converged to the measured one. The temperature distribution calculated by the FEM agreed well with the measured one, so the calibration between the radiation power and the temperature profile can be suitably conducted by this technique.


IRVB, plasma diagnostics

DOI: 10.1585/pfr.7.2405039


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This paper may be cited as follows:

Ryuichi SANO, Byron J. PETERSON, Evgeny A. DRAPIKO, Dongcheol SEO, Yuji YAMAUCHI and Tomoaki HINO, Plasma Fusion Res. 7, 2405039 (2012).