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  1. NIFS Series
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Comparative Divertor-Transport Study for Helical Devices

http://hdl.handle.net/10655/2692
http://hdl.handle.net/10655/2692
de774d92-a5f6-4dcd-9292-e4adcaec2d94
Item type 研究報告書 / Research Paper(1)
公開日 2010-02-05
タイトル
タイトル Comparative Divertor-Transport Study for Helical Devices
言語 en
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_18ws
資源タイプ research report
アクセス権
アクセス権 metadata only access
アクセス権URI http://purl.org/coar/access_right/c_14cb
著者 "Feng, Y.

× "Feng, Y.

en "Feng, Y.

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Kobayashi, M.

× Kobayashi, M.

en Kobayashi, M.

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Sardei, F.

× Sardei, F.

en Sardei, F.

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Masuzaki, S.

× Masuzaki, S.

en Masuzaki, S.

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Kisslinger, J.

× Kisslinger, J.

en Kisslinger, J.

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Morisaki, T.

× Morisaki, T.

en Morisaki, T.

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Grigull, P.

× Grigull, P.

en Grigull, P.

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Yamada, H.

× Yamada, H.

en Yamada, H.

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McCormick, K.

× McCormick, K.

en McCormick, K.

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Ohyabu, N.

× Ohyabu, N.

en Ohyabu, N.

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K, nig, R.

× K, nig, R.

en K, nig, R.

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Yamada, I.

× Yamada, I.

en Yamada, I.

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Giannone, L.

× Giannone, L.

en Giannone, L.

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Narihara, K.

× Narihara, K.

en Narihara, K.

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Wenzel, U.

× Wenzel, U.

en Wenzel, U.

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Morita, S.

× Morita, S.

en Morita, S.

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Thomsen, H.

× Thomsen, H.

en Thomsen, H.

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Miyazawa, J.

× Miyazawa, J.

en Miyazawa, J.

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Ramasubramanian, N.

× Ramasubramanian, N.

en Ramasubramanian, N.

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Watanabe, T.

× Watanabe, T.

en Watanabe, T.

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Ashikawa, N.

× Ashikawa, N.

en Ashikawa, N.

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Ida, K.

× Ida, K.

en Ida, K.

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Komori, A.

× Komori, A.

en Komori, A.

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Motojima, O.

× Motojima, O.

en Motojima, O.

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Nakamura, Y.

× Nakamura, Y.

en Nakamura, Y.

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Peterson, B.J.

× Peterson, B.J.

en Peterson, B.J.

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Sato, K.

× Sato, K.

en Sato, K.

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Shoji, M.

× Shoji, M.

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Tamura, N.

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Tokitani, M.

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the, LHD experimental group"

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抄録
内容記述タイプ Abstract
内容記述 "Using the island divertors (ID) of W7-AS and W7-X and the helical divertor (HD) of LHD as examples, the paper presents a comparative divertor transport study for three typical helical devices of different machine-size following two distinct divertor concepts, aiming at identifying common physics issues/effects for mutual validation and combined studies. Based on EMC3/EIRENE simulations supported by experimental results, the paper first reviews and compares the essential transport features of the W7-AS ID and the LHD HD in order to build a base and framework for a predictive study of W7-X. Revealed is the fundamental role of the low-order magnetic islands in both divertor concepts. Preliminary EMC3/EIRENE simulation results for W7-X are presented and discussed with respect to W7-AS and LHD in order to show how the individual field and divertor topologies affect the divertor transport and performance. For instance, a high recycling regime which is absent from W7-AS and LHD is expected for W7-X. Topics addressed are restricted to the basic function elements of a divertor such as particle flux enhancement and impurity retention. In particular, the divertor function on reducing the influx of intrinsic impurities is examined for all the three devices under different divertor plasma conditions. Special attention is paid to examining the island screening potential of intrinsic impurities which has been predicted for all the three devices under high divertor collisionality conditions. The results are discussed in conjunction with the experimental observations for high density divertor plasmas in W7-AS and LHD."
書誌情報 en : Research Report NIFS-Series

発行日 2008-10-01
報告書番号
NIFS-947
ISSN
収録物識別子タイプ ISSN
収録物識別子 0915-633X
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