Measurement of thermal wall-load distribution caused by the locked mode in a reversed-field pinch plasma

Y. Yagi, S. Sekine, H. Koguchi, T. Bolzonella, H. Sakakita

Research output: Contribution to journalArticle

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Abstract

Spatially localized heat flux due to the locked mode in a reversed-field pinch device, TPE-RX, is investigated by using a multipoint vessel temperature monitoring system (VTMS) which has 268 thermocouples distributed on the outer surface of the vessel system. It is shown by two-dimensional mapping that the locally enhanced thermal wall load correlates closely with the mode locking positions. Heat flux shows spatial peaks (full width at half maximum) of approximately 10° and approximately 100° in the toroidal and poloidal directions, respectively. Typical heat flux at the locked position is estimated to be of the order of 100 MW/m2, and the increment of the vessel temperature on the plasma side-surface exceeds 1000° with 0.35 MA plasma current.
Original languageEnglish
Pages (from-to)1144 - 1147
Number of pages4
JournalJournal of Nuclear Materials
Volume290-293
DOIs
Publication statusPublished - 2001
Externally publishedYes

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All Science Journal Classification (ASJC) codes

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

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