First electron temperature and density measurements of D-module plasma in GAMMA 10/PDX using Thomson scattering and microwave interferometer systems

M. Yoshikawa; J. Kohagura; Y. Shima; H. Nakanishi; T. Mouri; S. Suto; K. Nojiri; A. Terakado; N. Ezumi; M. Sakamoto; Y. Nakashima; R. Minami; I. Yamada; R. Yasuhara; H. Funaba; T. Minami; N. Kenmochi; D. Kuwahara; H. Van der Meiden

doi:10.1088/1748-0221/14/06/P06033

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First electron temperature and density measurements of D-module plasma in GAMMA 10/PDX using Thomson scattering and microwave interferometer systems

M. Yoshikawa^a, J. Kohagura^a, Y. Shima^a, H. Nakanishi^a, T. Mouri^a, S. Suto^a, K. Nojiri^a, A. Terakado^a, N. Ezumi^a, M. Sakamoto^a, Y. Nakashima^a, R. Minami^a, I. Yamada^b, R. Yasuhara^b, H. Funaba^b, T. Minami^c, N. Kenmochi^d, D. Kuwahara^e and H. Van der Meiden^f

Published 24 June 2019 • © 2019 IOP Publishing Ltd and Sissa Medialab
Journal of Instrumentation, Volume 14, June 2019 Citation M. Yoshikawa et al 2019 JINST 14 P06033

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Author e-mails

yosikawa@prc.tsukuba.ac.jp

Author affiliations

^a Plasma Research Center, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan

^b National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan

^c Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan

^d Graduate School of Frontier Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan

^e College of Engineering, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan

^f FOM Institute DIFFER—Dutch Institute for Fundamental Energy Research, Partner in the Trilateral Euregio Cluster, the Netherlands

Dates

Received 16 April 2019
Accepted 8 June 2019
Published 24 June 2019

DOI

https://doi.org/10.1088/1748-0221/14/06/P06033

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Abstract

We developed an yttrium aluminium garnet (YAG)-Thomson scattering (TS) system for measuring an electron temperature and density in the divertor simulation experimental module (D-module) plasma in GAMMA 10/PDX. We applied a frequency multiplied microwave interferometer (MIF) system for measuring a line integrated electron density in D-module. In D-module, there are many electrostatic probes on the V-shaped tungsten target plate. However, they cannot measure the upstream plasma parameters. By using the YAG-TS system and MIF system, we can obtain the upstream plasma parameters. In the argon gas puffing D-module plasma, we successfully obtained the electron temperature and density of upstream plasma for the first time.

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