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Heat transport modelling in EXTRAP T2R
Alfven lab, KTH, Stockholm, Sweden.
Alfven lab, KTH, Stockholm, Sweden.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Alfven lab, KTH, Stockholm, Sweden.
2009 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 49, no 2, 025002- p.Article in journal (Refereed) Published
Abstract [en]

A model to estimate the heat transport in the EXTRAP T2R reversed field pinch (RFP) is described. The model, based on experimental and theoretical results, divides the RFP electron heat diffusivity χ e into three regions, one in the plasma core, where χ e is assumed to be determined by the tearing modes, one located around the reversal radius, where χ e is assumed not dependent on the magnetic fluctuations and one in the extreme edge, where high χ e is assumed. The absolute values of the core and of the reversal χ e are determined by simulating the electron temperature and the soft x-ray and by comparing the simulated signals with the experimental ones. The model is used to estimate the heat diffusivity and the energy confinement time during the flat top of standard plasmas, of deep F plasmas and of plasmas obtained with the intelligent shell.

Place, publisher, year, edition, pages
2009. Vol. 49, no 2, 025002- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-129638DOI: 10.1088/0029-5515/49/2/025002OAI: oai:DiVA.org:uu-129638DiVA: diva2:344652
Available from: 2010-08-19 Created: 2010-08-19 Last updated: 2010-08-23Bibliographically approved

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Publisher's full texthttp://stacks.iop.org/0029-5515/49/i=2/a=025002

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