Ion heat transport studies in JET

P. Mantica; C. Angioni; B. Baiocchi; M. Baruzzo; M. Beurskens; J.P.S. Bizarro; R. Budny; P. Buratti; A. Casati; C. Challis; J. Citrin; G. Colyer; F. Crisanti; A. Figueiredo; L. Frassinetti; C. Giroud; N. C. Hawkes; J. Hobirk; E. Joffrin; T. Johnson; E. Lerche; P. Migliano; V. Naulin; A. G. Peeters; G. Rewoldt; F. Ryter; Antti Salmi; R. Sartori; C. Sozzi; G. Staebler; D. Strintzi; Tuomas Tala; M. Tsalas; D. Van Eester; T. Versloot; P.C. Devries; J. Weiland; JET-EFDA contributors

doi:10.1088/0741-3335/53/12/124033

Ion heat transport studies in JET

P. Mantica^*
, C. Angioni
, B. Baiocchi
, M. Baruzzo
, M. Beurskens
, J.P.S. Bizarro
, R. Budny
, P. Buratti
, A. Casati
, C. Challis
, J. Citrin
, G. Colyer
, F. Crisanti
, A. Figueiredo
, L. Frassinetti
, C. Giroud
, N. C. Hawkes
, J. Hobirk
, E. Joffrin
, T. Johnson

E. Lerche, P. Migliano, V. Naulin, A. G. Peeters, G. Rewoldt, F. Ryter, Antti Salmi, R. Sartori, C. Sozzi, G. Staebler, D. Strintzi, Tuomas Tala, M. Tsalas, D. Van Eester, T. Versloot, P.C. Devries, J. Weiland, JET-EFDA contributors

^*Corresponding author for this work

National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA)
Max-Planck-Institut für Plasmaphysik (IPP)
University of Milan
National Research Council (CNR)
Culham Science Centre
Universidade de Lisboa
Princeton University
Commissariat a l'Energie Atomique et aux Energies Alternatives (CEA)
Dutch Research Council
KTH Royal Institute of Technology
École Royale Militaire
Technical University of Denmark (DTU)
University of Bayreuth
Aalto University
Fusion for Energy (F4E)
General Atomics
Chalmers University of Technology

Research output: Contribution to journal › Article › Scientific › peer-review

28 Citations (Scopus)

Abstract

Detailed experimental studies of ion heat transport have been carried out in JET exploiting the upgrade of active charge exchange spectroscopy and the availability of multi-frequency ion cyclotron resonance heating with ³He minority. The determination of ion temperature gradient (ITG) threshold and ion stiffness offers unique opportunities for validation of the well-established theory of ITG driven modes. Ion stiffness is observed to decrease strongly in the presence of toroidal rotation when the magnetic shear is sufficiently low. This effect is dominant with respect to the well-known ω _E×B threshold up-shift and plays a major role in enhancing core confinement in hybrid regimes and ion internal transport barriers. The effects of T _e/T _i and s/q on ion threshold are found rather weak in the domain explored. Quasi-linear fluid/gyro-fluid and linear/non-linear gyro-kinetic simulations have been carried out. Whilst threshold predictions show good match with experimental observations, some significant discrepancies are found on the stiffness behaviour.

Original language	English
Article number	124033
Number of pages	17
Journal	Plasma Physics and Controlled Fusion
Volume	53
Issue number	12
DOIs	https://doi.org/10.1088/0741-3335/53/12/124033
Publication status	Published - 1 Dec 2011
MoE publication type	Not Eligible
Event	38th EPS Conference on Plasma Physics - Strasbourg, France Duration: 27 Jun 2011 → 1 Jul 2011

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Mantica, P., Angioni, C., Baiocchi, B., Baruzzo, M., Beurskens, M., Bizarro, J. P. S., Budny, R., Buratti, P., Casati, A., Challis, C., Citrin, J., Colyer, G., Crisanti, F., Figueiredo, A., Frassinetti, L., Giroud, C., Hawkes, N. C., Hobirk, J., Joffrin, E., ... JET-EFDA contributors (2011). Ion heat transport studies in JET. Plasma Physics and Controlled Fusion, 53(12), Article 124033. https://doi.org/10.1088/0741-3335/53/12/124033

@article{3cdf7be806dc45dc8b479b5c8c51a969,

title = "Ion heat transport studies in JET",

abstract = "Detailed experimental studies of ion heat transport have been carried out in JET exploiting the upgrade of active charge exchange spectroscopy and the availability of multi-frequency ion cyclotron resonance heating with 3He minority. The determination of ion temperature gradient (ITG) threshold and ion stiffness offers unique opportunities for validation of the well-established theory of ITG driven modes. Ion stiffness is observed to decrease strongly in the presence of toroidal rotation when the magnetic shear is sufficiently low. This effect is dominant with respect to the well-known ω E×B threshold up-shift and plays a major role in enhancing core confinement in hybrid regimes and ion internal transport barriers. The effects of T e/T i and s/q on ion threshold are found rather weak in the domain explored. Quasi-linear fluid/gyro-fluid and linear/non-linear gyro-kinetic simulations have been carried out. Whilst threshold predictions show good match with experimental observations, some significant discrepancies are found on the stiffness behaviour.",

author = "P. Mantica and C. Angioni and B. Baiocchi and M. Baruzzo and M. Beurskens and J.P.S. Bizarro and R. Budny and P. Buratti and A. Casati and C. Challis and J. Citrin and G. Colyer and F. Crisanti and A. Figueiredo and L. Frassinetti and C. Giroud and Hawkes, \{N. C.\} and J. Hobirk and E. Joffrin and T. Johnson and E. Lerche and P. Migliano and V. Naulin and Peeters, \{A. G.\} and G. Rewoldt and F. Ryter and Antti Salmi and R. Sartori and C. Sozzi and G. Staebler and D. Strintzi and Tuomas Tala and M. Tsalas and \{Van Eester\}, D. and T. Versloot and P.C. Devries and J. Weiland and \{JET-EFDA contributors\}",

year = "2011",

month = dec,

day = "1",

doi = "10.1088/0741-3335/53/12/124033",

language = "English",

volume = "53",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

publisher = "Institute of Physics IOP",

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note = "38th EPS Conference on Plasma Physics, EPS 2011 ; Conference date: 27-06-2011 Through 01-07-2011",

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Mantica, P, Angioni, C, Baiocchi, B, Baruzzo, M, Beurskens, M, Bizarro, JPS, Budny, R, Buratti, P, Casati, A, Challis, C, Citrin, J, Colyer, G, Crisanti, F, Figueiredo, A, Frassinetti, L, Giroud, C, Hawkes, NC, Hobirk, J, Joffrin, E, Johnson, T, Lerche, E, Migliano, P, Naulin, V, Peeters, AG, Rewoldt, G, Ryter, F, Salmi, A, Sartori, R, Sozzi, C, Staebler, G, Strintzi, D, Tala, T, Tsalas, M, Van Eester, D, Versloot, T, Devries, PC, Weiland, J & JET-EFDA contributors 2011, 'Ion heat transport studies in JET', Plasma Physics and Controlled Fusion, vol. 53, no. 12, 124033. https://doi.org/10.1088/0741-3335/53/12/124033

TY - JOUR

T1 - Ion heat transport studies in JET

AU - Mantica, P.

AU - Angioni, C.

AU - Baiocchi, B.

AU - Baruzzo, M.

AU - Beurskens, M.

AU - Bizarro, J.P.S.

AU - Budny, R.

AU - Buratti, P.

AU - Casati, A.

AU - Challis, C.

AU - Citrin, J.

AU - Colyer, G.

AU - Crisanti, F.

AU - Figueiredo, A.

AU - Frassinetti, L.

AU - Giroud, C.

AU - Hawkes, N. C.

AU - Hobirk, J.

AU - Joffrin, E.

AU - Johnson, T.

AU - Lerche, E.

AU - Migliano, P.

AU - Naulin, V.

AU - Peeters, A. G.

AU - Rewoldt, G.

AU - Ryter, F.

AU - Salmi, Antti

AU - Sartori, R.

AU - Sozzi, C.

AU - Staebler, G.

AU - Strintzi, D.

AU - Tala, Tuomas

AU - Tsalas, M.

AU - Van Eester, D.

AU - Versloot, T.

AU - Devries, P.C.

AU - Weiland, J.

AU - JET-EFDA contributors

PY - 2011/12/1

Y1 - 2011/12/1

N2 - Detailed experimental studies of ion heat transport have been carried out in JET exploiting the upgrade of active charge exchange spectroscopy and the availability of multi-frequency ion cyclotron resonance heating with 3He minority. The determination of ion temperature gradient (ITG) threshold and ion stiffness offers unique opportunities for validation of the well-established theory of ITG driven modes. Ion stiffness is observed to decrease strongly in the presence of toroidal rotation when the magnetic shear is sufficiently low. This effect is dominant with respect to the well-known ω E×B threshold up-shift and plays a major role in enhancing core confinement in hybrid regimes and ion internal transport barriers. The effects of T e/T i and s/q on ion threshold are found rather weak in the domain explored. Quasi-linear fluid/gyro-fluid and linear/non-linear gyro-kinetic simulations have been carried out. Whilst threshold predictions show good match with experimental observations, some significant discrepancies are found on the stiffness behaviour.

AB - Detailed experimental studies of ion heat transport have been carried out in JET exploiting the upgrade of active charge exchange spectroscopy and the availability of multi-frequency ion cyclotron resonance heating with 3He minority. The determination of ion temperature gradient (ITG) threshold and ion stiffness offers unique opportunities for validation of the well-established theory of ITG driven modes. Ion stiffness is observed to decrease strongly in the presence of toroidal rotation when the magnetic shear is sufficiently low. This effect is dominant with respect to the well-known ω E×B threshold up-shift and plays a major role in enhancing core confinement in hybrid regimes and ion internal transport barriers. The effects of T e/T i and s/q on ion threshold are found rather weak in the domain explored. Quasi-linear fluid/gyro-fluid and linear/non-linear gyro-kinetic simulations have been carried out. Whilst threshold predictions show good match with experimental observations, some significant discrepancies are found on the stiffness behaviour.

U2 - 10.1088/0741-3335/53/12/124033

DO - 10.1088/0741-3335/53/12/124033

M3 - Article

AN - SCOPUS:83755169509

SN - 0741-3335

VL - 53

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 12

M1 - 124033

T2 - 38th EPS Conference on Plasma Physics

Y2 - 27 June 2011 through 1 July 2011

ER -

Ion heat transport studies in JET

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