Local island divertor experiments on CHS

被引：18

作者：

Komori, A ^{[1
]}

Ohyabu, N ^{[1
]}

Masuzaki, S ^{[1
]}

Morisaki, T ^{[1
]}

Suzuki, H ^{[1
]}

Takahashi, C ^{[1
]}

Sakakibara, S ^{[1
]}

Watanabe, K ^{[1
]}

Watanabe, T ^{[1
]}

Minami, T ^{[1
]}

Morita, S ^{[1
]}

Tanaka, K ^{[1
]}

Ohdachi, S ^{[1
]}

Kubo, S ^{[1
]}

Inoue, N ^{[1
]}

Yamada, H ^{[1
]}

Nishimura, K ^{[1
]}

Okamura, S ^{[1
]}

Matsuoka, K ^{[1
]}

Motojima, O ^{[1
]}

Fujiwara, M ^{[1
]}

Iiyoshi, A ^{[1
]}

Klepper, CC ^{[1
]}

Lyon, JF ^{[1
]}

England, AC ^{[1
]}

Greenwood, DE ^{[1
]}

Lee, DK ^{[1
]}

Overbey, DR ^{[1
]}

Rome, JA ^{[1
]}

Schechter, DE ^{[1
]}

Wilson, CT ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,OAK RIDGE,TN 37831

来源：

JOURNAL OF NUCLEAR MATERIALS | 1997年 / 241卷

关键词：

CHS; island divertor; divertor plasma; active pumping; improved confinement mode;

D O I：

10.1016/S0022-3115(97)80175-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A local island divertor (LLD) was installed on the Compact Helical System (CHS) to demonstrate the principle of LLD and to study its effects on the edge plasma. The particle flow was observed to be guided to the back side of the externally created magnetic island along field lines, and pumped out by a cryogenic pump with high pumping efficiency. As a result, a factor of about 2 reduction in the average core density was seen compared with non-LID discharges at the same gas puff rate. In addition to the demonstration of these fundamental divertor functions, we observed a modest improvement of energy confinement, which could be due to the edge plasma control by the local island divertor.

引用

页码：967 / 971

页数：5

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