Modification of a limiter under ultra long pulse operation in the superconducting high-field tokamak TRIAM-1M

Kazutoshi Tokunaga, T. Fujiwara, N. Yoshida, T. Muroga, S. Itoh

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Morphological and compositional changes have been investigated for a ring limiter of the superconducting high-field tokamak TRIAM-1M after hydrogen plasma discharges, including very long duration (3 min) operation. The limiter surfce was found to be complicatedly modified by synergistic effects of heat load, hydrogen bombardment and impurity accumulation. Particularly, heavy damage was observed in the inner part of the torus on the plasma side. This is considered to becaused by long heat loading under long pulse discharge. Present work implies new issues for the limiter and wall materials to be used for steady-state tokamak devices.

Original languageEnglish
Pages (from-to)353-355
Number of pages3
JournalJournal of Nuclear Materials
Volume179-181
Issue numberPART 1
DOIs
Publication statusPublished - Jan 1 1991

Fingerprint

Limiters
tokamak devices
heat
Hydrogen
hydrogen plasma
Tokamak devices
pulses
plasma jets
Plasmas
bombardment
Thermal load
damage
impurities
rings
hydrogen
Impurities

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)

Cite this

Modification of a limiter under ultra long pulse operation in the superconducting high-field tokamak TRIAM-1M. / Tokunaga, Kazutoshi; Fujiwara, T.; Yoshida, N.; Muroga, T.; Itoh, S.

In: Journal of Nuclear Materials, Vol. 179-181, No. PART 1, 01.01.1991, p. 353-355.

Research output: Contribution to journalArticle

Tokunaga, Kazutoshi ; Fujiwara, T. ; Yoshida, N. ; Muroga, T. ; Itoh, S. / Modification of a limiter under ultra long pulse operation in the superconducting high-field tokamak TRIAM-1M. In: Journal of Nuclear Materials. 1991 ; Vol. 179-181, No. PART 1. pp. 353-355.
@article{267cd56441b2486888adf055b4c24907,
title = "Modification of a limiter under ultra long pulse operation in the superconducting high-field tokamak TRIAM-1M",
abstract = "Morphological and compositional changes have been investigated for a ring limiter of the superconducting high-field tokamak TRIAM-1M after hydrogen plasma discharges, including very long duration (3 min) operation. The limiter surfce was found to be complicatedly modified by synergistic effects of heat load, hydrogen bombardment and impurity accumulation. Particularly, heavy damage was observed in the inner part of the torus on the plasma side. This is considered to becaused by long heat loading under long pulse discharge. Present work implies new issues for the limiter and wall materials to be used for steady-state tokamak devices.",
author = "Kazutoshi Tokunaga and T. Fujiwara and N. Yoshida and T. Muroga and S. Itoh",
year = "1991",
month = "1",
day = "1",
doi = "10.1016/0022-3115(91)90098-R",
language = "English",
volume = "179-181",
pages = "353--355",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "PART 1",

}

TY - JOUR

T1 - Modification of a limiter under ultra long pulse operation in the superconducting high-field tokamak TRIAM-1M

AU - Tokunaga, Kazutoshi

AU - Fujiwara, T.

AU - Yoshida, N.

AU - Muroga, T.

AU - Itoh, S.

PY - 1991/1/1

Y1 - 1991/1/1

N2 - Morphological and compositional changes have been investigated for a ring limiter of the superconducting high-field tokamak TRIAM-1M after hydrogen plasma discharges, including very long duration (3 min) operation. The limiter surfce was found to be complicatedly modified by synergistic effects of heat load, hydrogen bombardment and impurity accumulation. Particularly, heavy damage was observed in the inner part of the torus on the plasma side. This is considered to becaused by long heat loading under long pulse discharge. Present work implies new issues for the limiter and wall materials to be used for steady-state tokamak devices.

AB - Morphological and compositional changes have been investigated for a ring limiter of the superconducting high-field tokamak TRIAM-1M after hydrogen plasma discharges, including very long duration (3 min) operation. The limiter surfce was found to be complicatedly modified by synergistic effects of heat load, hydrogen bombardment and impurity accumulation. Particularly, heavy damage was observed in the inner part of the torus on the plasma side. This is considered to becaused by long heat loading under long pulse discharge. Present work implies new issues for the limiter and wall materials to be used for steady-state tokamak devices.

UR - http://www.scopus.com/inward/record.url?scp=44949276749&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=44949276749&partnerID=8YFLogxK

U2 - 10.1016/0022-3115(91)90098-R

DO - 10.1016/0022-3115(91)90098-R

M3 - Article

AN - SCOPUS:44949276749

VL - 179-181

SP - 353

EP - 355

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - PART 1

ER -