Dynamics of recycling processes responding to the local particle and heat load perturbations on TRIAM-1M

H. Zushi, R. Bhattacharyay, M. Sakamoto, Y. Nozaki, K. Nakashima, M. Ogawa, K. Takaki, K. Hanada, H. Idei, K. Nakamura, K. Sasaki, Y. Hirooka, Y. Nakashima, S. Kado, T. Shikama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new diagnostic technique to study the global structure of the recycling among the plasma facing components PFCs has been proposed and tested using the three kinds of perturbations (gas puffing, transport oscillation, and localized heat deposition) at the frequency less than a few Hz . Hα intensities are measured at various toroidal and poloidal positions and FFT analysis shows that the propagation velocity of the neutral hydrogen in the toroidal direction is < 25 m/s for the gas puff modulation. For toroidally uniform transport oscillations, on the other hand, in-out asymmetry of recycling structure is found. The localized heat deposition causes the localized particle source distribution in the torus due to enhanced efflux of the hydrogen particles only fueled from the hot area.

Original languageEnglish
Title of host publication33rd EPS Conference on Plasma Physics 2006, EPS 2006 - Europhysics Conference Abstracts
Pages1604-1607
Number of pages4
Publication statusPublished - Dec 1 2006
Event33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006 - Rome, Italy
Duration: Jun 19 2006Jun 23 2006

Publication series

Name33rd EPS Conference on Plasma Physics 2006, EPS 2006
Volume2

Other

Other33rd European Physical Society Conference on Plasma Physics 2006, EPS 2006
CountryItaly
CityRome
Period6/19/066/23/06

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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