Ion heat transport studies in JET
Artikel i vetenskaplig tidskrift, 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.

h-mode plasmas

ratio

tokamaks

t-e/t-i

confinement

shear

asdex upgrade

instabilities

thermal transport

turbulence simulations

Författare

P. Mantica

Associazione EURATOM-ENEA sulla Fusione

EFDA-JET

C. Angioni

Max Planck-institutet

EFDA-JET

B. Baiocchi

Universita degli Studi di Milano

Associazione EURATOM-ENEA sulla Fusione

EFDA-JET

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 Plasma Physics Laboratory

P. Buratti

EFDA-JET

Associazione EURATOM-ENEA sulla Fusione

A. Casati

EFDA-JET

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

C. Challis

EFDA-JET

Culham Lab

J. Citrin

FOM Institute for Plasma Physics - Rijnhuizen

EFDA-JET

G. Colyer

EFDA-JET

Culham Lab

F. Crisanti

EFDA-JET

Associazione EURATOM-ENEA sulla Fusione

A. C. A. Figueiredo

Instituto Superior Tecnico

EFDA-JET

L. Frassinetti

EFDA-JET

EES

C. Giroud

Culham Lab

EFDA-JET

N. Hawkes

Culham Lab

EFDA-JET

J. Hobirk

EFDA-JET

Max Planck-institutet

E. Joffrin

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

EFDA-JET

T. Johnson

EES

EFDA-JET

E. Lerche

Koninklijke Militaire School

EFDA-JET

P. Migliano

EFDA-JET

Universita' degli Studi di Milano-Bicocca

Associazione EURATOM-ENEA sulla Fusione

V. Naulin

Danmarks Tekniske Universitet (DTU)

EFDA-JET

A. G. Peeters

EFDA-JET

Universität Bayreuth

G. Rewoldt

EFDA-JET

Princeton Plasma Physics Laboratory

F. Ryter

EFDA-JET

Max Planck-institutet

A. Salmi

EFDA-JET

Aalto-Yliopisto

R. Sartori

EFDA-JET

Fusion for Energy Joint Undertaking

C. Sozzi

Associazione EURATOM-ENEA sulla Fusione

EFDA-JET

G. Staebler

EFDA-JET

General Atomics

D. Strintzi

EFDA-JET

Max Planck-institutet

T. Tala

Teknologian Tutkimuskeskus (VTT)

EFDA-JET

M. Tsalas

EFDA-JET

FOM Institute for Plasma Physics - Rijnhuizen

D. Van Eester

Koninklijke Militaire School

EFDA-JET

T. Versloot

EFDA-JET

FOM Institute for Plasma Physics - Rijnhuizen

P. C. de Vries

EFDA-JET

FOM Institute for Plasma Physics - Rijnhuizen

Jan Weiland

Chalmers, Rymd- och geovetenskap, Transportteori

Plasma Physics and Controlled Fusion

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

Vol. 53 12

Ämneskategorier

Fysik

DOI

10.1088/0741-3335/53/12/124033