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

P. Migliano; P. Mantica; B. Baiocchi; A. Casati; J. Citrin; C. Giroud; N. Hawkes; E. Lerche; M. Tsalas; D. Eester, van

doi:10.1088/0741-3335/55/5/055003

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

P. Migliano, P. Mantica, B. Baiocchi, A. Casati, J. Citrin, C. Giroud, N. Hawkes, E. Lerche, M. Tsalas, D. Eester, van

Science and Technology of Nuclear Fusion

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Abstract

Detailed experimental studies of ion heat transport are carried out in JET to explore the Te/Ti dependence of ion heat transport in ITER relevant range of parameters (Te/Ti = 1) using low rotation plasmas with dominant ion cyclotron resonance heating to avoid the coupling of the effects of Te/Ti and rotation which affected previous experiments. This experimental setup has led to an accurate determination of the ion temperature gradient (ITG) threshold at varying Te/Ti, offering unique opportunities for validation of the well-established theory of ITG driven modes. A rather mild decrease in threshold with increasing Te/Ti 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.

Original language	English
Article number	055003
Pages (from-to)	055003-1/8
Number of pages	8
Journal	Plasma Physics and Controlled Fusion
Volume	55
Issue number	5
DOIs	https://doi.org/10.1088/0741-3335/55/5/055003
Publication status	Published - 2013

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

abstract = "Detailed experimental studies of ion heat transport are carried out in JET to explore the Te/Ti dependence of ion heat transport in ITER relevant range of parameters (Te/Ti = 1) using low rotation plasmas with dominant ion cyclotron resonance heating to avoid the coupling of the effects of Te/Ti and rotation which affected previous experiments. This experimental setup has led to an accurate determination of the ion temperature gradient (ITG) threshold at varying Te/Ti, offering unique opportunities for validation of the well-established theory of ITG driven modes. A rather mild decrease in threshold with increasing Te/Ti 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.",

author = "P. Migliano and P. Mantica and B. Baiocchi and A. Casati and J. Citrin and C. Giroud and N. Hawkes and E. Lerche and M. Tsalas and {Eester, van}, D.",

year = "2013",

doi = "10.1088/0741-3335/55/5/055003",

language = "English",

volume = "55",

pages = "055003--1/8",

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TY - JOUR

T1 - The dependence of ion heat transport on the ion to electron temperature ratio in JET non-rotating plasmas

AU - Migliano, P.

AU - Mantica, P.

AU - Baiocchi, B.

AU - Casati, A.

AU - Citrin, J.

AU - Giroud, C.

AU - Hawkes, N.

AU - Lerche, E.

AU - Tsalas, M.

AU - Eester, van, D.

PY - 2013

Y1 - 2013

N2 - Detailed experimental studies of ion heat transport are carried out in JET to explore the Te/Ti dependence of ion heat transport in ITER relevant range of parameters (Te/Ti = 1) using low rotation plasmas with dominant ion cyclotron resonance heating to avoid the coupling of the effects of Te/Ti and rotation which affected previous experiments. This experimental setup has led to an accurate determination of the ion temperature gradient (ITG) threshold at varying Te/Ti, offering unique opportunities for validation of the well-established theory of ITG driven modes. A rather mild decrease in threshold with increasing Te/Ti 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.

AB - Detailed experimental studies of ion heat transport are carried out in JET to explore the Te/Ti dependence of ion heat transport in ITER relevant range of parameters (Te/Ti = 1) using low rotation plasmas with dominant ion cyclotron resonance heating to avoid the coupling of the effects of Te/Ti and rotation which affected previous experiments. This experimental setup has led to an accurate determination of the ion temperature gradient (ITG) threshold at varying Te/Ti, offering unique opportunities for validation of the well-established theory of ITG driven modes. A rather mild decrease in threshold with increasing Te/Ti 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.

U2 - 10.1088/0741-3335/55/5/055003

DO - 10.1088/0741-3335/55/5/055003

M3 - Article

SN - 0741-3335

VL - 55

SP - 055003-1/8

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5

M1 - 055003

ER -

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

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