A Full Wave Simulation on the Density Dependence of a Slow Wave Excitation in the GAMMA 10/PDX Central Cell with TASK/WF3D
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- IKEZOE Ryuya
- Research Institute for Applied Mechanics, Kyushu University
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- KUBOTA Yushi
- Plasma Research Center, University of Tsukuba
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- ICHIMURA Makoto
- Plasma Research Center, University of Tsukuba
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- HIRATA Mafumi
- Plasma Research Center, University of Tsukuba
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- SUMIDA Shuhei
- Plasma Research Center, University of Tsukuba
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- JANG Seowon
- Plasma Research Center, University of Tsukuba
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- IZUMI Koki
- Plasma Research Center, University of Tsukuba
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- TANAKA Atsuto
- Plasma Research Center, University of Tsukuba
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- SEKINE Ryo
- Plasma Research Center, University of Tsukuba
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- KAYANO Hiroki
- Plasma Research Center, University of Tsukuba
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- SHIMA Yoriko
- Plasma Research Center, University of Tsukuba
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- KOHAGURA Junko
- Plasma Research Center, University of Tsukuba
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- YOSHIKAWA Masayuki
- Plasma Research Center, University of Tsukuba
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- SAKAMOTO Mizuki
- Plasma Research Center, University of Tsukuba
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- NAKASHIMA Yousuke
- Plasma Research Center, University of Tsukuba
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- FUKUYAMA Atsushi
- Department of Nuclear Engineering, Kyoto University
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Abstract
<p>Beach heating using a slow Alfvén wave in ion cyclotron range of frequencies would be the first candidate for ion heating in a DEMO-relevant divertor testing linear plasma device if it is applicable to a high-density regime. To clarify its availability, the density dependence of a slow wave excitation is investigated using a full wave simulation with TASK/WF3D code in the GAMMA 10/PDX central cell configuration, where there is an extensive track record of a beach heating. A shielding effect is successfully demonstrated and well understood under a three-dimensional configuration in the limit of cold plasma approximation. As the density increases, excitable left-handed electric field, which contributes to ion cyclotron heating, degrades more and more from a core region, and resultantly the ion absorption region goes outwards with reducing its power. For core densities above 1020 m−3, the wave field exists only at a very edge, and ion heating becomes negligible unless the wave frequency is much increased with a correspondent magnetic field enhancement.</p>
Journal
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- Plasma and Fusion Research
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Plasma and Fusion Research 14 (0), 2402003-2402003, 2019-01-24
The Japan Society of Plasma Science and Nuclear Fusion Research
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Details
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- CRID
- 1390845713054256000
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- NII Article ID
- 130007603325
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- NII Book ID
- AA12346675
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- ISSN
- 18806821
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- HANDLE
- 2241/00157928
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed
