Plasma and Fusion Research

Volume 9, 3402121 (2014)

Regular Articles

Measurement of Heat Flux with Calorimeters in the D-Module of GAMMA 10/PDX

Miki IWAMOTO, Yousuke NAKASHIMA, Hiroto MATSUURA¹⁾, Hisato TAKEDA, Katsuhiro HOSOI, Kazuya ICHIMURA, Satoru KIGURE, Shigehito TAKAHASHI, Yasunari HOSODA, Kensuke OKI, Yu NAGATSUKA, Motoki YOSHIKAWA, Ryo NOHARA, Mizuki SAKAMOTO, Tsuyoshi IMAI and Makoto ICHIMURA

: Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
1): Radiation Research Center, Osaka Prefecture University, Osaka 599-8570, Japan

(Received 11 December 2013 / Accepted 28 April 2014 / Published 29 July 2014)

Abstract

In the GAMMA 10/PDX tandem mirror device at the University of Tsukuba, divertor simulation experiments were conducted for realizing detached plasma. A divertor simulation experimental module (D-module), in which a V-shaped target is mounted, was installed in the west end-cell of GAMMA 10/PDX. The spatial distribution of the heat flux was measured with calorimeters on the V-shaped target under target angle conditions of 30° , 45° and 60° . The spatial distribution depends on the structure of magnetic field in the end-cell. The heat flux depended on the gas species and the amount of gas injection was also investigated. With increasing Ar gas pressure, the ion flux decreased by approximately a factor of four, whereas the heat flux decreased by three fifths.

Keywords

GAMMA 10/PDX, D-module, calorimeter, heat flux, detached plasma, divertor, neutral gas injection, V-shaped target, ion flux, plasma and neutral interaction

DOI: 10.1585/pfr.9.3402121

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This paper may be cited as follows:

Miki IWAMOTO, Yousuke NAKASHIMA, Hiroto MATSUURA, Hisato TAKEDA, Katsuhiro HOSOI, Kazuya ICHIMURA, Satoru KIGURE, Shigehito TAKAHASHI, Yasunari HOSODA, Kensuke OKI, Yu NAGATSUKA, Motoki YOSHIKAWA, Ryo NOHARA, Mizuki SAKAMOTO, Tsuyoshi IMAI and Makoto ICHIMURA, Plasma Fusion Res. 9, 3402121 (2014).