Calorimetric measurement of heat load in full non-inductive LHCD plasmas on TRIAM-1M

K. Hanada, N. Shinoda, T. Sugata, K. Sasaki, H. Zushi, K. Nakamura, K. N. Sato, M. Sakamoto, H. Idei, M. Hasegawa, S. Kawasaki, H. Nakashima, A. Higashijima

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Calorimetric measurements using the temperature increment of cooling-water were carried out to estimate the heat load distribution on the plasma facing components (PFCs) in the limiter discharges on TRIAM-1M. Line averaged electron density, ne, and LH power, PLH, dependences of the heat load on PFCs were measured. The heat load on the limiters was proportional to ne1.5 in the range of ne = 0.2-1.0 × 1019 m-3 and PLH1 in the range of PLH = 0.005-0.09 MW. For PLH > 0.1 MW, the plasma transition to an enhanced current drive (ECD) mode appeared and the ne dependences on the heat load on the limiter moderated. This indicates that the heat flux to scrape-off layer (SOL) region was reduced due to the improvement of the plasma confinement. The up-down asymmetry of the heat load on the vacuum vessel was enhanced in the ECD mode, which may be caused by the increasing of the direct loss of energetic electrons.

Original languageEnglish
Pages (from-to)1425-1428
Number of pages4
JournalJournal of Nuclear Materials
Volume363-365
Issue number1-3
DOIs
Publication statusPublished - Jun 15 2007

Fingerprint

Thermal load
Limiters
Plasmas
heat
Plasma confinement
plasma control
liquid cooling
Cooling water
Carrier concentration
vessels
Heat flux
heat flux
asymmetry
Vacuum
vacuum
Electrons
estimates
electrons
Temperature
temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Hanada, K., Shinoda, N., Sugata, T., Sasaki, K., Zushi, H., Nakamura, K., ... Higashijima, A. (2007). Calorimetric measurement of heat load in full non-inductive LHCD plasmas on TRIAM-1M. Journal of Nuclear Materials, 363-365(1-3), 1425-1428. https://doi.org/10.1016/j.jnucmat.2007.01.255

Calorimetric measurement of heat load in full non-inductive LHCD plasmas on TRIAM-1M. / Hanada, K.; Shinoda, N.; Sugata, T.; Sasaki, K.; Zushi, H.; Nakamura, K.; Sato, K. N.; Sakamoto, M.; Idei, H.; Hasegawa, M.; Kawasaki, S.; Nakashima, H.; Higashijima, A.

In: Journal of Nuclear Materials, Vol. 363-365, No. 1-3, 15.06.2007, p. 1425-1428.

Research output: Contribution to journalArticle

Hanada, K, Shinoda, N, Sugata, T, Sasaki, K, Zushi, H, Nakamura, K, Sato, KN, Sakamoto, M, Idei, H, Hasegawa, M, Kawasaki, S, Nakashima, H & Higashijima, A 2007, 'Calorimetric measurement of heat load in full non-inductive LHCD plasmas on TRIAM-1M', Journal of Nuclear Materials, vol. 363-365, no. 1-3, pp. 1425-1428. https://doi.org/10.1016/j.jnucmat.2007.01.255
Hanada, K. ; Shinoda, N. ; Sugata, T. ; Sasaki, K. ; Zushi, H. ; Nakamura, K. ; Sato, K. N. ; Sakamoto, M. ; Idei, H. ; Hasegawa, M. ; Kawasaki, S. ; Nakashima, H. ; Higashijima, A. / Calorimetric measurement of heat load in full non-inductive LHCD plasmas on TRIAM-1M. In: Journal of Nuclear Materials. 2007 ; Vol. 363-365, No. 1-3. pp. 1425-1428.
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