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.

thermal transport

tokamaks

t-e/t-i

ratio

instabilities

asdex upgrade

shear

turbulence simulations

confinement

h-mode plasmas

Författare

P. Mantica

ENEA

EFDA-JET

C. Angioni

Max-Planck-Gesellschaft

EFDA-JET

B. Baiocchi

ENEA

EFDA-JET

Universita' degli Studi di Milano

M. Baruzzo

EFDA-JET

Consorzio Rfx

M. N. A. Beurskens

EFDA-JET

Culham Science Centre

J. P. S. Bizarro

EFDA-JET

Instituto Superior Tecnico

R. V. Budny

Princeton University

EFDA-JET

P. Buratti

EFDA-JET

ENEA

A. Casati

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

EFDA-JET

C. Challis

EFDA-JET

Culham Science Centre

J. Citrin

EFDA-JET

FOM Institute for Plasma Physics - Rijnhuizen

G. Colyer

Culham Science Centre

EFDA-JET

F. Crisanti

ENEA

EFDA-JET

A. C. A. Figueiredo

Instituto Superior Tecnico

EFDA-JET

L. Frassinetti

EFDA-JET

EES

C. Giroud

Culham Science Centre

EFDA-JET

N. Hawkes

EFDA-JET

Culham Science Centre

J. Hobirk

EFDA-JET

Max-Planck-Gesellschaft

E. Joffrin

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

EFDA-JET

T. Johnson

EES

EFDA-JET

E. Lerche

EFDA-JET

Koninklijke Militaire School

P. Migliano

Universita' degli Studi di Milano-Bicocca

EFDA-JET

ENEA

V. Naulin

EFDA-JET

Danmarks Tekniske Universitet (DTU)

A. G. Peeters

Universität Bayreuth

EFDA-JET

G. Rewoldt

Princeton University

EFDA-JET

F. Ryter

EFDA-JET

Max-Planck-Gesellschaft

A. Salmi

Aalto-Yliopisto

EFDA-JET

R. Sartori

Fusion for Energy Joint Undertaking

EFDA-JET

C. Sozzi

ENEA

EFDA-JET

G. Staebler

General Atomics

EFDA-JET

D. Strintzi

EFDA-JET

Max-Planck-Gesellschaft

T. Tala

Teknologian Tutkimuskeskus (VTT)

EFDA-JET

M. Tsalas

EFDA-JET

FOM Institute for Plasma Physics - Rijnhuizen

D. Van Eester

EFDA-JET

Koninklijke Militaire School

T. Versloot

FOM Institute for Plasma Physics - Rijnhuizen

EFDA-JET

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 124033

Ämneskategorier

Fysik

DOI

10.1088/0741-3335/53/12/124033

Mer information

Senast uppdaterat

2022-04-05