Comparison of Two Inverse Heat Conduction Models for Heat Flux Measurement in the GAMMA 10/PDX

Hiroto Matsuura; Masato Oouti; Md Shahinul Islam; Takaaki Iijima; Ryutaro Minami; Yousuke Nakashima

doi:10.1109/TPS.2019.2901496

Comparison of Two Inverse Heat Conduction Models for Heat Flux Measurement in the GAMMA 10/PDX

Hiroto Matsuura, Masato Oouti, Md Shahinul Islam, Takaaki Iijima, Ryutaro Minami, Yousuke Nakashima

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The new calorimeter recently installed in the GAMMA 10/PDX device of the University of Tsukuba (Ibaraki, Japan) has two thermocouples set near the plasma irradiation surface. This calorimeter quickly responds to heat flux change, and its signal/noise ratio has been improved by an insulation thermoelectric convertor and a metal shield box. In this paper, the heat flux change during a plasma shot was estimated by two analytic models (temperature gradient and pulse decomposition). The obtained heat flux of both methods agreed before plasma termination. Thereafter, the heat flux estimated by the pulse decomposition method failed because the calorimeter signal was disturbed by electromagnetic noise.

Original language	English
Article number	8667310
Pages (from-to)	3026-3030
Number of pages	5
Journal	IEEE Transactions on Plasma Science
Volume	47
Issue number	6
DOIs	https://doi.org/10.1109/TPS.2019.2901496
State	Published - Jun 2019
Externally published	Yes

Keywords

Magnetic confinement
plasma diagnostics

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10.1109/TPS.2019.2901496

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title = "Comparison of Two Inverse Heat Conduction Models for Heat Flux Measurement in the GAMMA 10/PDX",

abstract = "The new calorimeter recently installed in the GAMMA 10/PDX device of the University of Tsukuba (Ibaraki, Japan) has two thermocouples set near the plasma irradiation surface. This calorimeter quickly responds to heat flux change, and its signal/noise ratio has been improved by an insulation thermoelectric convertor and a metal shield box. In this paper, the heat flux change during a plasma shot was estimated by two analytic models (temperature gradient and pulse decomposition). The obtained heat flux of both methods agreed before plasma termination. Thereafter, the heat flux estimated by the pulse decomposition method failed because the calorimeter signal was disturbed by electromagnetic noise.",

keywords = "Magnetic confinement, plasma diagnostics",

author = "Hiroto Matsuura and Masato Oouti and Islam, {Md Shahinul} and Takaaki Iijima and Ryutaro Minami and Yousuke Nakashima",

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AU - Iijima, Takaaki

AU - Minami, Ryutaro

AU - Nakashima, Yousuke

PY - 2019/6

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AB - The new calorimeter recently installed in the GAMMA 10/PDX device of the University of Tsukuba (Ibaraki, Japan) has two thermocouples set near the plasma irradiation surface. This calorimeter quickly responds to heat flux change, and its signal/noise ratio has been improved by an insulation thermoelectric convertor and a metal shield box. In this paper, the heat flux change during a plasma shot was estimated by two analytic models (temperature gradient and pulse decomposition). The obtained heat flux of both methods agreed before plasma termination. Thereafter, the heat flux estimated by the pulse decomposition method failed because the calorimeter signal was disturbed by electromagnetic noise.

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Comparison of Two Inverse Heat Conduction Models for Heat Flux Measurement in the GAMMA 10/PDX

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Keywords

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