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LHD helical divertor

Technical Report:

Abstract

The Large Helical Device (LHD) now under construction is a heliotron/torsatron device with a closed divertor system. The edge LHD magnetic structure has been studied in detail. A peculiar feature of the configuration is existence of edge surface layers, a complicated three dimensional magnetic structure which does not, however, seem to hamper the expected divertor functions. Two divertor operational modes are being considered for the LHD experiment, high density, cold radiative divertor operation as a safe heat removal scheme and high temperature divertor plasma operation. In the latter operation, a divertor plasma with temperature of a few kev, generated by efficient pumping, expects to lead to significant improvement in core plasma confinement. Conceptual designs of the LHD divertor components are under way. (author).
Authors:
Ohyabu, N; Watanabe, T; Hantao, Ji [1] 
  1. and others
Publication Date:
Jul 01, 1993
Product Type:
Technical Report
Report Number:
NIFS-239
Reference Number:
SCA: 700420; PA: JPN-93:011213; EDB-94:016726; ERA-19:006098; NTS-94:015034; SN: 93001119429
Resource Relation:
Other Information: PBD: Jul 1993
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; HELIOTRON; DIVERTORS; HELICAL CONFIGURATION; MAGNETIC CONFINEMENT; PLASMA; PLASMA SCRAPE-OFF LAYER; MAGNETIC SURFACES; HEAT TRANSFER; SPECIFICATIONS; 700420; PLASMA-FACING COMPONENTS
OSTI ID:
10110172
Research Organizations:
National Inst. for Fusion Science, Nagoya (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE94727626; TRN: JP9311213
Availability:
OSTI; NTIS; INIS
Submitting Site:
JPN
Size:
40 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Ohyabu, N, Watanabe, T, and Hantao, Ji. LHD helical divertor. Japan: N. p., 1993. Web.
Ohyabu, N, Watanabe, T, & Hantao, Ji. LHD helical divertor. Japan.
Ohyabu, N, Watanabe, T, and Hantao, Ji. 1993. "LHD helical divertor." Japan.
@misc{etde_10110172,
title = {LHD helical divertor}
author = {Ohyabu, N, Watanabe, T, and Hantao, Ji}
abstractNote = {The Large Helical Device (LHD) now under construction is a heliotron/torsatron device with a closed divertor system. The edge LHD magnetic structure has been studied in detail. A peculiar feature of the configuration is existence of edge surface layers, a complicated three dimensional magnetic structure which does not, however, seem to hamper the expected divertor functions. Two divertor operational modes are being considered for the LHD experiment, high density, cold radiative divertor operation as a safe heat removal scheme and high temperature divertor plasma operation. In the latter operation, a divertor plasma with temperature of a few kev, generated by efficient pumping, expects to lead to significant improvement in core plasma confinement. Conceptual designs of the LHD divertor components are under way. (author).}
place = {Japan}
year = {1993}
month = {Jul}
}