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First Application of 3D Peripheral Plasma Transport Code EMC3-EIRENE to Heliotron J

Ryota MATOIKE, Gakushi KAWAMURA^2,3), Shinsuke OHSHIMA¹⁾, Masahiro KOBAYASHI^2,3), Yasuhiro SUZUKI^2,3), Kazunobu NAGASAKI¹⁾, Suguru MASUZAKI²⁾, Shinji KOBAYASHI¹⁾, Satoshi YAMAMOTO¹⁾, Shinichiro KADO¹⁾, Takashi MINAMI¹⁾, Hiroyuki OKADA¹⁾, Shigeru KONOSHIMA¹⁾, Toru MIZUUCHI¹⁾, Hirohiko TANAKA⁴⁾, Hiroto MATSUURA⁵⁾, Yuhe FENG⁶⁾ and Heinke FRERICHS⁷⁾

Graduate School of Energy Science, Kyoto University, Gokasyo, Uji 611-0011, Japan

1)

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

2)

National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan

3)

Department of Fusion Science, Graduate University for Advanced Studies, Toki 509-5292, Japan

4)

Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan

5)

Graduate School of Engineering, Osaka Prefecture University, Osaka 599-8531, Japan

6)

Max-Planck Institute for Plasma Physics, Greifswald, Germany

7)

University of Wisconsin-Madison, Wisconsin, U.S.A.

(Received 9 January 2019 / Accepted 5 April 2019 / Published 25 September 2019)

Abstract

The 3D peripheral plasma and neutral transport code, EMC3-EIRENE was applied to the Heliotron J with a wide and flexible controllability of magnetic configuration. This code requires a three-dimensional (3D) grid with high resolution in the peripheral plasma region to reproduce the fine plasma structure. The grid generation tool, FLARE, was utilized to create the grid in conjunction with the code developed to arbitrarily set the outer boundary of the peripheral grid. After setting up the 3D grid, we carried out the EMC3-EIRENE calculation successfully for the first time in the Heliotron J's standard configuration. In addition, the convergence of the iterative calculation and the effects of different grid resolutions upon the calculation were investigated. A good numerical convergence was obtained, and the influence of resolution was observed in the electron density in the divertor region.

Copyright (c) 2019 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

EMC3-EIRENE, Scrape-Off Layer, divertor, transport, modeling, Heliotron J

DOI: 10.1585/pfr.14.3403127

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