|Title||The dependence of ion heat transport on the ion to electron temperature ratio in JET non-rotating plasmas|
|Publication Type||Journal Article|
|Year of Publication||2013|
|Authors||P. Migliano, P. Mantica, B. Baiocchi, A. Casati, J. Citrin, C. Giroud, N. Hawkes, E. Lerche, M. Tsalas, D. Van Eester, JET-EFDA Contributors|
|Journal||Plasma Physics and Controlled Fusion|
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.
|Alternate Title||Plasma Phys. Control. Fusion|
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