Ion heat transport studies in JET
Journal article, 2011

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 (3)He 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 omega(ExB) 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.

shear

ratio

thermal transport

instabilities

confinement

t-e/t-i

turbulence simulations

h-mode plasmas

asdex upgrade

tokamaks

Author

P. Mantica

Associazione EURATOM-ENEA sulla Fusione

EFDA-JET

C. Angioni

Max Planck Society

EFDA-JET

B. Baiocchi

EFDA-JET

Associazione EURATOM-ENEA sulla Fusione

University of Milan

M. Baruzzo

EFDA-JET

Consorzio Rfx

M. N. A. Beurskens

Culham Lab

EFDA-JET

J. P. S. Bizarro

Instituto Superior Tecnico

EFDA-JET

R. V. Budny

EFDA-JET

Princeton University

P. Buratti

Associazione EURATOM-ENEA sulla Fusione

EFDA-JET

A. Casati

The French Alternative Energies and Atomic Energy Commission (CEA)

EFDA-JET

C. Challis

EFDA-JET

Culham Lab

J. Citrin

FOM Institute for Plasma Physics - Rijnhuizen

EFDA-JET

G. Colyer

Culham Lab

EFDA-JET

F. Crisanti

EFDA-JET

Associazione EURATOM-ENEA sulla Fusione

A. C. A. Figueiredo

EFDA-JET

Instituto Superior Tecnico

L. Frassinetti

EFDA-JET

EES

C. Giroud

EFDA-JET

Culham Lab

N. Hawkes

EFDA-JET

Culham Lab

J. Hobirk

EFDA-JET

Max Planck Society

E. Joffrin

The French Alternative Energies and Atomic Energy Commission (CEA)

EFDA-JET

T. Johnson

EFDA-JET

EES

E. Lerche

Royal Military Academy

EFDA-JET

P. Migliano

University of Milano-Bicocca

EFDA-JET

Associazione EURATOM-ENEA sulla Fusione

V. Naulin

Technical University of Denmark (DTU)

EFDA-JET

A. G. Peeters

EFDA-JET

University of Bayreuth

G. Rewoldt

EFDA-JET

Princeton University

F. Ryter

EFDA-JET

Max Planck Society

A. Salmi

Aalto University

EFDA-JET

R. Sartori

Fusion for Energy Joint Undertaking

EFDA-JET

C. Sozzi

Associazione EURATOM-ENEA sulla Fusione

EFDA-JET

G. Staebler

EFDA-JET

General Atomics

D. Strintzi

Max Planck Society

EFDA-JET

T. Tala

Technical Research Centre of Finland (VTT)

EFDA-JET

M. Tsalas

FOM Institute for Plasma Physics - Rijnhuizen

EFDA-JET

D. Van Eester

EFDA-JET

Royal Military Academy

T. Versloot

EFDA-JET

FOM Institute for Plasma Physics - Rijnhuizen

P. C. de Vries

FOM Institute for Plasma Physics - Rijnhuizen

EFDA-JET

Jan Weiland

Chalmers, Earth and Space Sciences, Transport Theory

Plasma Physics and Controlled Fusion

0741-3335 (ISSN) 1361-6587 (eISSN)

Vol. 53 12

Subject Categories

Physical Sciences

DOI

10.1088/0741-3335/53/12/124033

More information

Latest update

11/5/2020