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Recent Progress of Divertor Simulation Research Using the GAMMA 10/PDX Tandem Mirror

https://repo.qst.go.jp/records/72779
https://repo.qst.go.jp/records/72779
2c08eeff-a4f8-4bbd-a23f-a744a2122824
Item type 会議発表用資料 / Presentation(1)
公開日 2018-05-04
タイトル
タイトル Recent Progress of Divertor Simulation Research Using the GAMMA 10/PDX Tandem Mirror
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_c94f
資源タイプ conference object
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 Nakashima, Y.

× Nakashima, Y.

WEKO 716997

Nakashima, Y.

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Ichimura, K.

× Ichimura, K.

WEKO 716998

Ichimura, K.

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S., Islan M.

× S., Islan M.

WEKO 716999

S., Islan M.

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Sakamoto, M.

× Sakamoto, M.

WEKO 717000

Sakamoto, M.

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Ezumi, N.

× Ezumi, N.

WEKO 717001

Ezumi, N.

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Hirata, M.

× Hirata, M.

WEKO 717002

Hirata, M.

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Ichimura, M.

× Ichimura, M.

WEKO 717003

Ichimura, M.

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Ikezoe, R.

× Ikezoe, R.

WEKO 717004

Ikezoe, R.

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Imai, T.

× Imai, T.

WEKO 717005

Imai, T.

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Kariya, T.

× Kariya, T.

WEKO 717006

Kariya, T.

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Katanuma, I.

× Katanuma, I.

WEKO 717007

Katanuma, I.

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Kohagura, J.

× Kohagura, J.

WEKO 717008

Kohagura, J.

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Minami, R.

× Minami, R.

WEKO 717009

Minami, R.

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Numakura, T.

× Numakura, T.

WEKO 717010

Numakura, T.

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Yoshikawa, M.

× Yoshikawa, M.

WEKO 717011

Yoshikawa, M.

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M., Islam M.

× M., Islam M.

WEKO 717012

M., Islam M.

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Nojiri, K.

× Nojiri, K.

WEKO 717013

Nojiri, K.

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Shimizu, K.

× Shimizu, K.

WEKO 717014

Shimizu, K.

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Terakado, A.

× Terakado, A.

WEKO 717015

Terakado, A.

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Asakura, Nobuyuki

× Asakura, Nobuyuki

WEKO 717016

Asakura, Nobuyuki

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Fukumoto, Masakatsu

× Fukumoto, Masakatsu

WEKO 717017

Fukumoto, Masakatsu

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Hatayama, A.

× Hatayama, A.

WEKO 717018

Hatayama, A.

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Hirooka, Y.

× Hirooka, Y.

WEKO 717019

Hirooka, Y.

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Kado, S.

× Kado, S.

WEKO 717020

Kado, S.

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Kubo, Hirotaka

× Kubo, Hirotaka

WEKO 717021

Kubo, Hirotaka

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Masuzaki, S.

× Masuzaki, S.

WEKO 717022

Masuzaki, S.

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Matsuura, H.

× Matsuura, H.

WEKO 717023

Matsuura, H.

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Nakano, Tomohide

× Nakano, Tomohide

WEKO 717024

Nakano, Tomohide

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Nagata, S.

× Nagata, S.

WEKO 717025

Nagata, S.

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Nishino, N.

× Nishino, N.

WEKO 717026

Nishino, N.

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Ohno, N.

× Ohno, N.

WEKO 717027

Ohno, N.

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Sagara, A.

× Sagara, A.

WEKO 717028

Sagara, A.

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Sawada, K.

× Sawada, K.

WEKO 717029

Sawada, K.

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Shoji, M.

× Shoji, M.

WEKO 717030

Shoji, M.

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Tonegawa, A.

× Tonegawa, A.

WEKO 717031

Tonegawa, A.

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Ueda, Y.

× Ueda, Y.

WEKO 717032

Ueda, Y.

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朝倉 伸幸

× 朝倉 伸幸

WEKO 717033

en 朝倉 伸幸

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福本 正勝

× 福本 正勝

WEKO 717034

en 福本 正勝

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久保 博孝

× 久保 博孝

WEKO 717035

en 久保 博孝

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仲野 友英

× 仲野 友英

WEKO 717036

en 仲野 友英

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抄録
内容記述タイプ Abstract
内容記述 This paper describes the characteristics of detached plasma produced by using hydrogen and noble gases together with the progress of high-heat and particle flux generation experiments in the GAMMA 10/PDX end-cell. In the Plasma Research Center, University of Tsukuba, divertor simulation experiments have been started at the end-cell of GAMMA 10/PDX (E-divertor). In the GAMMA 10/PDX end-cell, plasma flow with high temperature (Ti=100–400 eV, Te=30 eV), heat and particle fluxes (>10 MW/m2, >1023/m2s, respectively) have been produced under the high magnetic field (~1T), which cannot be attained by conventional liner devices. We have succeeded in achieving detachment of high temperature plasma equivalent to the SOL plasma of tokamaks in spite of using a linear device with short connection length of magnetic field line. Various gases (N2, Ne, Ar, Xe) are examined to evaluate the effect of radiation cooling against the plasma flow of MW/m2 level in a divertor simulation region and the following results are obtained: i) Xe gas was most effective on electron cooling (down to ~2 eV) and reduction of heat and particle fluxes (1%, 3%, respectively). ii) Ne gas was less effective. On the other hand, iii) N2 gas showed more favourable effects than Ar. The above results are almost consistent with the observation from an absolutely calibrated visible spectrometer viewing the inside of D-module, such as i) stronger emission from Xe I and II, ii) significant molecular visible-emission from N2, etc. Furthermore, in the case with a simultaneous injection of hydrogen and Xe gases, the ion flux was almost fully suppressed, which indicates the existence of molecular activated recombination in D-module. In plasma flow generation experiments, ICRF heating in anchor-cell successfully extended the particle flux up to 3.3ˆ1023 /m2s in the end-cell. Superimposing the ECH pulse (380 kWx5 ms) into the ICRF plasma also succeeded in extending the highest heat flux of ~15 MW/m2, which exceeds the ITER divertor heat load in the steady state. These results will contribute to the progress in detached plasma operation and clarification of radiation cooling mechanism towards the development of the future divertor.
会議概要(会議名, 開催地, 会期, 主催者等)
内容記述タイプ Other
内容記述 26th IAEA Fusion Energy Conference
発表年月日
日付 2016-10-21
日付タイプ Issued
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