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Fusion Science and Technology Volume 58, 2010 - Issue 1: Special Issue on Large Helical Device (LHD)
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Chapter 5. Divertor and Edge Physics

Transport Characteristics in the Stochastic Magnetic Boundary of LHD: Magnetic Field Topology and Its Impact on Divertor Physics and Impurity Transport

M. KobayashiNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
Y. FengMax-Planck-Institut für Plasmaphysik, EURATOM-IPP Association D-17491, Greifswald, Germany
,
S. MoritaNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
S. MasuzakiNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
N. EzumiNagano National College of Technology, Nagano 381-8550, Japan
,
T. KobayashiNagano National College of Technology, Nagano 381-8550, Japan
,
M. B. ChowdhuriNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
H. YamadaNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
T. MorisakiNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
N. OhyabuNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
M. GotoNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
I. YamadaNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
K. NariharaNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
A. KomoriNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
,
O. MotojimaNational Institute for Fusion Science, Toki, Gifu 509-5292, Japan
& LHD Experiment Group show all
Pages 220-231 | Published online: 07 Apr 2017

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T. Morisaki, S. Masuzaki, R. Sakamoto, M. Kobayashi, N. Ohyabu, H. Yamada & A. Komori. (2010) Local Island Divertor Experiment. Fusion Science and Technology 58:1, pages 232-241.
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H. Yamada, K. Kawahata, T. Mutoh, N. Ohyabu, Y. Takeiri, S. Imagawa, K. Ida, T. Mito, Y. Nagayama, T. Shimozuma, K. Y. Watanabe, M. Kobayashi, R. Kumazawa, S. Masuzaki, T. Morisaki, J. Miyazawa, K. Nagaoka, Y. Narushima, S. Sakakibara, R. Sakamoto, K. Toi, M. Yokoyama, O. Kaneko, A. Komori & O. Motojima. (2010) Progress in the Integrated Development of the Helical System. Fusion Science and Technology 58:1, pages 12-28.
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Articles from other publishers (29)

M. Kobayashi, S. Ohdachi, Y. Xu, W. Li, A. Shimizu & J. Cheng. (2022) Gas puff imaging system for edge plasma fluctuation measurements in large helical device. Review of Scientific Instruments 93:9, pages 093513.
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Xiaolong ZHANG, Zhifeng CHENG, Song ZHOU, Yunfeng LIANG, Wei YAN, Nengchao WANG, Xiaoyi ZHANG, Zhonghe JIANG, Zhoujun YANG, Xin XU, Da LI, Qiong LI, Xiaodong LIN, Yonghua DING, Zhongyong CHEN & Zhipeng CHEN. (2021) Effect of edge magnetic island on carbon screening in the J-TEXT tokamak. Plasma Science and Technology 23:12, pages 125101.
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Y. Hayashi, M. Kobayashi, K. Mukai, S. Masuzaki & T. Murase. (2021) Divertor heat load distribution measurements with infrared thermography in the LHD helical divertor. Fusion Engineering and Design 165, pages 112235.
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Mikhail Tokar & Masahiro Kobayashi. (2020) Modeling of the resonant magnetic perturbation effect on detachment in the Large Helical Device. Plasma Physics and Controlled Fusion 62:8, pages 085011.
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S. Okamura, H. Liu, A. Shimizu, S. Kinoshita, M. Isobe, G. Xiong & Y. Xu. (2020) Island divertor configuration design for a quasi-axisymmetric stellarator CFQS. Journal of Plasma Physics 86:4.
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Masahiro Kobayashi & Mikhail Z. Tokar. (2020) Time-dependent plasma transport simulation for the study of edge impurity radiation dynamics with magnetic island in large helical device. Contributions to Plasma Physics 60:5-6, pages e201900138.
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Masahiro Kobayashi & Mikhail Tokar. 2020. Fusion Energy. Fusion Energy.
Valeria Perseo, Dorothea Gradic, Ralf König, Oliver P. Ford, Carsten Killer, Olaf Grulke & David A. Ennis. (2020) Coherence imaging spectroscopy at Wendelstein 7-X for impurity flow measurements. Review of Scientific Instruments 91:1, pages 013501.
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S.Y. Dai, T. Oishi, G. Kawamura, M. Kobayashi, S. Morita, Y. Feng & D.Z. Wang. (2018) Three-dimensional simulations of edge impurity flow obtained by the vacuum ultraviolet emission diagnostics in the Large Helical Device with EMC3-EIRENE. Nuclear Fusion 58:9, pages 096024.
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Steven Marcinko & Davide Curreli. (2018) Numerical characterization of the edge transport conditions and limiter fluxes of the HIDRA stellarator. Physics of Plasmas 25:2, pages 022507.
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Y Feng, H Frerichs, M Kobayashi & D Reiter. (2017) Monte-Carlo fluid approaches to detached plasmas in non-axisymmetric divertor configurations. Plasma Physics and Controlled Fusion 59:3, pages 034006.
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Shwetang N. Pandya, Byron J. Peterson, Masahiro Kobayashi, Katsumi Ida, Kiyofumi Mukai, Ryuichi Sano, Junichi Miyazawa, Hirohiko Tanaka, Suguru Masuzaki, Tsuyoshi Akiyama, Gen Motojima & Noriyasu Ohno. (2016) Dynamics of three-dimensional radiative structures during RMP assisted detached plasmas on the large helical device and its comparison with EMC3-EIRENE modeling. Nuclear Fusion 56:4, pages 046002.
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M. Kobayashi, Y. Xu, K. Ida, Y. Corre, Y. Feng, O. Schmitz, H. Frerichs, F.L. Tabares, T.E. Evans, J.W. Coenen, Y. Liang, A. Bader, K. Itoh, H. Yamada, Ph. Ghendrih, G. Ciraolo, D. Tafalla, A. Lopez-Fraguas, H.Y. Guo, Z.Y. Cui, D. Reiter, N. Asakura, U. Wenzel, S. Morita, N. Ohno, B.J. Peterson & S. Masuzaki. (2015) 3D effects of edge magnetic field configuration on divertor/scrape-off layer transport and optimization possibilities for a future reactor. Nuclear Fusion 55:10, pages 104021.
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K. Mukai, S. Masuzaki, B.J. Peterson, T. Akiyama, M. Kobayashi, C. Suzuki, H. Tanaka, S.N. Pandya, R. Sano, G. Motojima, N. Ohno, T. Morisaki, I. Murakami, J. Miyazawa, N. Tamura, S. Yoshimura, I. Yamada, R. Yasuhara, H. Funaba & K. Tanaka. (2015) Development of impurity seeding and radiation enhancement in the helical divertor of LHD. Nuclear Fusion 55:8, pages 083016.
Crossref
M. Kobayashi, Y. Feng, Y. Xu, F.L. Tabares, K. Ida, O. Schmitz, T.E. Evans, H. Frerichs, Y. Liang, A. Bader, K. Itoh, H. Yamada, Ph. Ghendrih, G. Ciraolo, D. Tafalla, A. Lopez-Fraguas, H.Y. Guo, Z.Y. Cui, D. Reiter, N. Asakura, U. Wenzel, S. Morita, N. Ohno, B.J. Peterson & S. Masuzaki. (2015) Impact of 3D magnetic field structure on boundary and divertor plasmas in stellarator/heliotron devices. Journal of Nuclear Materials 463, pages 2-10.
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S. Morita, M. Kobayashi, T. Oishi, H.M. Zhang, M. Goto, Z.Y. Cui, C.F. Dong, L.Q. Hu, X.L. Huang, G. Kawamura, S. Masuzaki, I. Murakami & E.H. Wang. (2015) Effect of neutral hydrogen on edge impurity behavior in stochastic magnetic field layer of Large Helical Device. Journal of Nuclear Materials 463, pages 644-648.
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M. Shoji, H. Kasahara, M. Tokitani, T. Seki, K. Saito, S. Kamio, R. Seki, Y. Tanaka, A. Pigarov, R. Smirnov, G. Kawamura, H. Tanaka, S. Masuzaki, Y. Uesugi & T. Mutoh. (2015) Studies of dust transport in long pulse plasma discharges in the large helical device. Nuclear Fusion 55:5, pages 053014.
Crossref
S Morita, E H Wang, M Kobayashi, C F Dong, T Oishi, Y Feng, M Goto, X L Huang, S Masuzaki, I Murakami, Y Suzuki & T Watanabe. (2014) Two-dimensional study of edge impurity transport in the Large Helical Device. Plasma Physics and Controlled Fusion 56:9, pages 094007.
Crossref
G. Kawamura, Y. Feng, M. Kobayashi, M. Shoji, T. Morisaki, S. Masuzaki & Y. Tomita. (2014) First EMC3-EIRENE Simulations with Divertor Legs of LHD in Realistic Device Geometry. Contributions to Plasma Physics 54:4-6, pages 437-441.
Crossref
Shigeru Sudo, Naoki Tamura, Sadatsugu Muto, Hisamichi Funaba, Chihiro Suzuki, Akiyoshi Murakami, Izumi Murakami & Yasuo Yoshimura. (2013) Transport characteristics of tracer and intrinsic impurities depending on the density of LHD plasmas. Plasma Physics and Controlled Fusion 55:9, pages 095014.
Crossref
S. Morita, C.F. Dong, M. Kobayashi, M. Goto, X.L. Huang, I. Murakami, T. Oishi, E.H. Wang, N. Ashikawa, K. Fujii, M. Hasuo, H. Kasahara, D. Kato, F. Koike, S. Masuzaki, H.A. Sakaue, T. Shikama & N. Yamaguchi. (2013) Effective screening of iron impurities in the ergodic layer of the Large Helical Device with a metallic first wall. Nuclear Fusion 53:9, pages 093017.
Crossref
M. Shoji, S. Masuzaki, M. Kobayashi, H. Funaba, T. Morisaki & H. Yamada. (2013) Effect of a baffle divertor structure on neutral hydrogen and helium transport in the Large Helical Device. Journal of Nuclear Materials 438, pages S559-S562.
Crossref
S. Masuzaki, M. Kobayashi, T. Akiyama, N. Ohno, T. Morisaki, M. Shoji, M. Tokitani, H. Tanaka, B.J. Peterson, S. Yoshimura, K. Narihara, I. Yamada, R. Yasuhara, A. Murakami, J. Miyazawa, T. Murase, T. Kobuchi, H. Yonezu, G. Kawamura, I. Murakami, Y. Takeiri, H. Yamada & A. Komori. (2013) Divertor heat and particle control experiments on the large helical device. Journal of Nuclear Materials 438, pages S133-S138.
Crossref
M. Kobayashi, S. Morita, C.F. Dong, Z.Y. Cui, Y.D. Pan, Y.D. Gao, H.Y. Zhou, Y. Feng, S. Masuzaki, M. Goto, T. Morisaki, H. Yamada, J. Cheng, P. Sun, Q.W. Yang & X.R. Duan. (2013) Edge impurity transport study in the stochastic layer of LHD and the scrape-off layer of HL-2A. Nuclear Fusion 53:3, pages 033011.
Crossref
P Helander, C D Beidler, T M Bird, M Drevlak, Y Feng, R Hatzky, F Jenko, R Kleiber, J H E Proll, Yu Turkin & P Xanthopoulos. (2012) Stellarator and tokamak plasmas: a comparison. Plasma Physics and Controlled Fusion 54:12, pages 124009.
Crossref
Shigeru Sudo, Naoki Tamura, Chihiro Suzuki, Sadatsugu Muto & Hisamichi Funaba. (2012) Multiple-tracer TESPEL injection for studying impurity behaviour in a magnetically confined plasma. Nuclear Fusion 52:6, pages 063012.
Crossref
Chunfeng Dong, Shigeru Morita, Masahiro Kobayashi, Motoshi Goto, Suguru Masuzaki, Tomohiro Morisaki & Erhui Wang. (2011) A study on plasma edge boundary in ergodic layer of LHD based on radial profile measurement of impurity line emissions. Physics of Plasmas 18:8, pages 082511.
Crossref
A. Komori, O. Kaneko, S. Sakakibara, R. Horiuchi, A. Sagara, H. Yamada, Y. Takeiri & LHD Experiment Group. (2011) Activity of national institute for Fusion Science toward realization of helical fusion reactor. Activity of national institute for Fusion Science toward realization of helical fusion reactor.
Y Feng, M Kobayashi, T Lunt & D Reiter. (2011) Comparison between stellarator and tokamak divertor transport. Plasma Physics and Controlled Fusion 53:2, pages 024009.
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