Published May 1998 | Version v1
Journal article

Comparison of edge neutral effect on the condition of H-mode transition before and after the modified divertor in JT-60U

  • 1. Japan Atomic Energy Research Institute, Naka Fusion Research Establishment Naka-machi, Naka, Ibaraki 311-0193 (Japan)

Description

The JT-60U divertor geometry was recently modified to a W-shaped structure in order to reduce the back flow of neutrals from the divertor. The H-mode threshold power decreased subtly compared with the open divertor case. As regards density dependence, the exponent of density was 0.5 to 0.75. In addition, we found that the outflux from the outer baffle plate should be considered for the evaluation of neutrals. (author)

Additional details

Publishing Information

Journal Title
Plasma Physics and Controlled Fusion (Online)
Journal Volume
40
Journal Issue
5
Journal Page Range
p. 713-716
ISSN
1361-6587

Conference

Title
6. IAEA technical committee meeting on H-mode physics
Dates
22-24 Sep 1997
Place
Kloster Seeon (Germany)

INIS

Country of Publication
International Atomic Energy Agency (IAEA)
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
31024144
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BOUNDARY LAYERS; DIVERTORS; H-MODE PLASMA CONFINEMENT; MATHEMATICAL MODELS; MEETINGS; TOROIDAL CONFIGURATION; WALL EFFECTS
Descriptors DEC
ANNULAR SPACE; CLOSED CONFIGURATIONS; CONFIGURATION; CONFINEMENT; LAYERS; MAGNETIC CONFINEMENT; MAGNETIC FIELD CONFIGURATIONS; PLASMA CONFINEMENT; SPACE

Optional Information

Collaborations
JT-60 team