The dependence of ion heat transport on the ion to electron temperature ratio in JET non-rotating plasmas

TitleThe dependence of ion heat transport on the ion to electron temperature ratio in JET non-rotating plasmas
Publication TypeJournal Article
Year of Publication2013
AuthorsP. Migliano, P. Mantica, B. Baiocchi, A. Casati, J. Citrin, C. Giroud, N. Hawkes, E. Lerche, M. Tsalas, D. Van Eester, JET-EFDA Contributors
JournalPlasma Physics and Controlled Fusion
Volume55
Number5
Pagination055003
Abstract

Detailed experimental studies of ion heat transport are carried out in JET to explore the T e / T i dependence of ion heat transport in ITER relevant range of parameters ( T e / T i ⩾ 1) using low rotation plasmas with dominant ion cyclotron resonance heating to avoid the coupling of the effects of T e / T i and rotation which affected previous experiments. This experimental setup has led to an accurate determination of the ion temperature gradient (ITG) threshold at varying T e / T i , offering unique opportunities for validation of the well-established theory of ITG driven modes. A rather mild decrease in threshold with increasing T e / T i in the interval of ITER interest was found. The new experimental result has found good agreement with theoretical predictions based on quasi-linear fluid and linear gyrokinetic models.

URLhttp://www.euro-fusionscipub.org/wp-content/uploads/2014/11/EFDP12022.pdf
DOI10.1088/0741-3335/55/5/055003
Division

FP

Department

CPP-HT

PID

d7125604ed111f3a6236f5a56210eb51

Alternate TitlePlasma Phys. Control. Fusion
LabelOA

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