Shape reconstruction of RF-driven divertor plasma on QUEST

Kazuo Nakamura; H. Fujita; X. L. Liu; E. B. Xue; Fan Xia; Osamu Mitarai; Kenichi Kurihara; Y. Kawamata; M. Sueoka; Makoto Hasegawa; Kazutoshi Tokunaga; H. Zushi; K. Hanada; A. Fujisawa; K. Matsuoka; H. Idei; Y. Nagashima; S. Kawasaki; H. Nakashima; A. Higashijima; Kuniaki Araki; A. Fukuyama

doi:10.1109/TPS.2014.2341616

Shape reconstruction of RF-driven divertor plasma on QUEST

Kazuo Nakamura, H. Fujita, X. L. Liu, E. B. Xue, Fan Xia, Osamu Mitarai, Kenichi Kurihara, Y. Kawamata, M. Sueoka, Makoto Hasegawa, Kazutoshi Tokunaga, H. Zushi, K. Hanada, A. Fujisawa, K. Matsuoka, H. Idei, Y. Nagashima, S. Kawasaki, H. Nakashima, A. HigashijimaKuniaki Araki, A. Fukuyama

Division of Nuclear Fusion Dynamics

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

5 Citations (Scopus)

Abstract

In the present RF-driven plasma with a lot of high-energy electrons, there may be anisotropic plasma pressure, which makes the usual equilibrium analysis difficult, but the Cauchy condition surface method can reconstruct the plasma shape precisely regardless of the anisotropy. In addition, the plasma current effect in the open magnetic surfaces outside of the closed magnetic surfaces is considered in the RF-driven divertor plasma. In the reconstruction process, singular value (SV) decomposition is used and optimal criterion function for generalized cross validation is estimated concerning truncation or reduction of the small-SV components.

Original language	English
Article number	6871382
Pages (from-to)	2309-2312
Number of pages	4
Journal	IEEE Transactions on Plasma Science
Volume	42
Issue number	9
DOIs	https://doi.org/10.1109/TPS.2014.2341616
Publication status	Published - Sept 1 2014

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

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Nakamura, K., Fujita, H., Liu, X. L., Xue, E. B., Xia, F., Mitarai, O., Kurihara, K., Kawamata, Y., Sueoka, M., Hasegawa, M., Tokunaga, K., Zushi, H., Hanada, K., Fujisawa, A., Matsuoka, K., Idei, H., Nagashima, Y., Kawasaki, S., Nakashima, H., ... Fukuyama, A. (2014). Shape reconstruction of RF-driven divertor plasma on QUEST. IEEE Transactions on Plasma Science, 42(9), 2309-2312. [6871382]. https://doi.org/10.1109/TPS.2014.2341616

Nakamura, K, Fujita, H, Liu, XL, Xue, EB, Xia, F, Mitarai, O, Kurihara, K, Kawamata, Y, Sueoka, M, Hasegawa, M , Tokunaga, K, Zushi, H, Hanada, K , Fujisawa, A, Matsuoka, K, Idei, H , Nagashima, Y, Kawasaki, S, Nakashima, H, Higashijima, A, Araki, K & Fukuyama, A 2014, 'Shape reconstruction of RF-driven divertor plasma on QUEST', IEEE Transactions on Plasma Science, vol. 42, no. 9, 6871382, pp. 2309-2312. https://doi.org/10.1109/TPS.2014.2341616

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abstract = "In the present RF-driven plasma with a lot of high-energy electrons, there may be anisotropic plasma pressure, which makes the usual equilibrium analysis difficult, but the Cauchy condition surface method can reconstruct the plasma shape precisely regardless of the anisotropy. In addition, the plasma current effect in the open magnetic surfaces outside of the closed magnetic surfaces is considered in the RF-driven divertor plasma. In the reconstruction process, singular value (SV) decomposition is used and optimal criterion function for generalized cross validation is estimated concerning truncation or reduction of the small-SV components.",

author = "Kazuo Nakamura and H. Fujita and Liu, {X. L.} and Xue, {E. B.} and Fan Xia and Osamu Mitarai and Kenichi Kurihara and Y. Kawamata and M. Sueoka and Makoto Hasegawa and Kazutoshi Tokunaga and H. Zushi and K. Hanada and A. Fujisawa and K. Matsuoka and H. Idei and Y. Nagashima and S. Kawasaki and H. Nakashima and A. Higashijima and Kuniaki Araki and A. Fukuyama",

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T1 - Shape reconstruction of RF-driven divertor plasma on QUEST

AU - Nakamura, Kazuo

AU - Fujita, H.

AU - Liu, X. L.

AU - Xue, E. B.

AU - Xia, Fan

AU - Mitarai, Osamu

AU - Kurihara, Kenichi

AU - Kawamata, Y.

AU - Sueoka, M.

AU - Hasegawa, Makoto

AU - Tokunaga, Kazutoshi

AU - Zushi, H.

AU - Hanada, K.

AU - Fujisawa, A.

AU - Matsuoka, K.

AU - Idei, H.

AU - Nagashima, Y.

AU - Kawasaki, S.

AU - Nakashima, H.

AU - Higashijima, A.

AU - Araki, Kuniaki

AU - Fukuyama, A.

PY - 2014/9/1

Y1 - 2014/9/1

N2 - In the present RF-driven plasma with a lot of high-energy electrons, there may be anisotropic plasma pressure, which makes the usual equilibrium analysis difficult, but the Cauchy condition surface method can reconstruct the plasma shape precisely regardless of the anisotropy. In addition, the plasma current effect in the open magnetic surfaces outside of the closed magnetic surfaces is considered in the RF-driven divertor plasma. In the reconstruction process, singular value (SV) decomposition is used and optimal criterion function for generalized cross validation is estimated concerning truncation or reduction of the small-SV components.

AB - In the present RF-driven plasma with a lot of high-energy electrons, there may be anisotropic plasma pressure, which makes the usual equilibrium analysis difficult, but the Cauchy condition surface method can reconstruct the plasma shape precisely regardless of the anisotropy. In addition, the plasma current effect in the open magnetic surfaces outside of the closed magnetic surfaces is considered in the RF-driven divertor plasma. In the reconstruction process, singular value (SV) decomposition is used and optimal criterion function for generalized cross validation is estimated concerning truncation or reduction of the small-SV components.

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Shape reconstruction of RF-driven divertor plasma on QUEST

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