Effects of nitrogen seeding on core ion thermal transport in JET ILW L-mode plasmas

JET Contributors

doi:10.1088/1741-4326/aa9e7c

Effects of nitrogen seeding on core ion thermal transport in JET ILW L-mode plasmas

JET Contributors

University of Milano-Bicocca
Ev-K2-CNR Committee
IFP-CNR
FOM Institute DIFFER 'Dutch Institute for Fundamental Energy Research'
Culham Centre for Fusion Energy
Koninklijke Militaire School - Ecole Royale Militaire
Arizona State University
Culham Science Centre
Research Centre Julich
Institute for Plasma Research
Instituto Superior Técnico
Queen's University of Belfast
University of Helsinki
CEA Cadarache
VTT Technical Research Centre of Finland Ltd
National Institutes for Quantum and Radiological Science and Technology
University of Naples Federico II
Universidad Nacional de Educación a Distancia
ITER
Consorzio Rfx
Kurchatov Institute
Università di Napoli Parthenope
ENEA Centro Ricerche Frascati
Troitsk Insitute of Innovating and Thermonuclear Research (TRINITI)
Uppsala University
National Institute for Cryogenics and Isotopic Technology
Max-Planck-Institut für Plasmaphysik
Università degli Studi di Catania
Fusion for Energy
National Institute for Fusion Science
Massachusetts Institute of Technology
Aalto University
ENAC-IIC-GEL
University of Latvia (LU)
Imperial College London
Laboratorio Nacional de Fusión
University of Oxford
EUROfusion Programme Management Unit
Oak Ridge National Laboratory
Institute of Meteorology and Climate Research
University of York
KTH Royal Institute of Technology
Maritime University of Szczecin
Institute for Nuclear Physics
Institute of Plasma Physics AS CR
Università di Trento
Wigner Research Centre for Physics
Comenius University
Lviv Polytechnic National University
National Institute for Optoelectronics
Fourth State Research
The University of Texas at Austin
Nuclear Research Centre
National Centre for Nuclear Research
Princeton Plasma Physics Laboratory
Aix-Marseille Université
Universitá di Cagliari
University of Warwick
Soltan Institute for Nuclear Studies
Plasma and Radiation Physics (INFLPR)
Ghent University
Department of Biochemistry and Molecular and Structural Biology
Nancy Université
Institute of Plasma Physics, Chinese Academy of Sciences
Center for Energy Research
Horia Hulubei National Institute of Physics and Nuclear Engineering
Chalmers University of Technology
European Commission
Universidad Politécnica de Madrid
University of Campania L. Vanvitelli
Warsaw University of Technology
Università degli Studi della Basilicata
Earth Sciences
Aix Marseille Université
University of Seville
Centro Brasileiro de Pesquisas Fisicas
IUSTI
University of Rome “Tor Vergata”
Ioffe Institute
General Atomics
University of Innsbruck
University of Toyama
University of Strathclyde
National Technical University of Athens
Tuscia University
Technical University of Denmark
Korea Advanced Institute of Science and Technology
Seoul National University
University College Cork
Vienna University of Technology
Opole University
Daegu University
National Fusion Research Institute
Dublin City University
PELIN LLC
Complutense University
University of Basel
Universidad Carlos III de Madrid
Consorzio CREATE
NCSR Demokritos
Purdue University
ULB-Campus Plaine
University of California
University of São Paulo
Lithuanian Energy Institute
HRS Fusion
Politecnico di Torino
Università di Cassino
Medical School of UESTC

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

A set of experiments was carried out in JET ILW (Joint European Torus with ITER-Like Wall) L-mode plasmas in order to study the effects of light impurities on core ion thermal transport. N was puffed into some discharges and its profile was measured by active Charge Exchange diagnostics, while ICRH power was deposited on-and off-Axis in minority scheme in order to have a scan of local heat flux at constant total power with and without N injection. Experimentally, the ion temperature profiles are more peaked for similar heat fluxes when N is injected in the plasma. Gyro-kinetic simulations using the GENE code indicate that a stabilization of Ion Temperature Gradient driven turbulent transport due to main ion dilution and to changes in and s/q is responsible of the enhanced peaking. The quasi-linear models TGLF and QuaLiKiz are tested against the experimental and the gyro-kinetic results.

langue originale	Anglais
Numéro d'article	026028
journal	Nuclear Fusion
Volume	58
Numéro de publication	2
Les DOIs	https://doi.org/10.1088/1741-4326/aa9e7c
état	Publié - 1 févr. 2018
Modification externe	Oui

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10.1088/1741-4326/aa9e7c

Contient cette citation

@article{34bdbbd3e0464100a43a6737734b13f5,

title = "Effects of nitrogen seeding on core ion thermal transport in JET ILW L-mode plasmas",

abstract = "A set of experiments was carried out in JET ILW (Joint European Torus with ITER-Like Wall) L-mode plasmas in order to study the effects of light impurities on core ion thermal transport. N was puffed into some discharges and its profile was measured by active Charge Exchange diagnostics, while ICRH power was deposited on-and off-Axis in minority scheme in order to have a scan of local heat flux at constant total power with and without N injection. Experimentally, the ion temperature profiles are more peaked for similar heat fluxes when N is injected in the plasma. Gyro-kinetic simulations using the GENE code indicate that a stabilization of Ion Temperature Gradient driven turbulent transport due to main ion dilution and to changes in and s/q is responsible of the enhanced peaking. The quasi-linear models TGLF and QuaLiKiz are tested against the experimental and the gyro-kinetic results.",

keywords = "gyrokinetic simulations, light impurities in JET, nuclear fusion, quasilinear simulations, turbulent transport",

author = "\{JET Contributors\} and N. Bonanomi and P. Mantica and J. Citrin and C. Giroud and E. Lerche and C. Sozzi and D. Taylor and M. Tsalas and \{Van Eester\}, D. and X. Litaudon and S. Abduallev and M. Abhangi and P. Abreu and M. Afzal and Aggarwal, \{K. M.\} and T. Ahlgren and Ahn, \{J. H.\} and L. Aho-Mantila and N. Aiba and M. Airila and R. Albanese and V. Aldred and D. Alegre and E. Alessi and P. Aleynikov and A. Alfer and A. Alkseev and M. Allinson and B. Alper and E. Alves and G. Ambrosino and R. Ambrosino and L. Amicucci and V. Amosov and Sund{\'e}n, \{E. Andersson\} and M. Angelone and M. Anghel and C. Angioni and L. Appel and C. Appelbee and P. Arena and M. Ariola and H. Arnichand and S. Arshad and A. Ash and N. Ashikawa and V. Aslanyan and O. Asunta and F. Auriemma and T. Nicolas",

note = "Publisher Copyright: {\textcopyright} 2018 EURATOM.",

year = "2018",

month = feb,

day = "1",

doi = "10.1088/1741-4326/aa9e7c",

language = "English",

volume = "58",

journal = "Nuclear Fusion",

issn = "0029-5515",

number = "2",

}

TY - JOUR

T1 - Effects of nitrogen seeding on core ion thermal transport in JET ILW L-mode plasmas

AU - JET Contributors

AU - Bonanomi, N.

AU - Mantica, P.

AU - Citrin, J.

AU - Giroud, C.

AU - Lerche, E.

AU - Sozzi, C.

AU - Taylor, D.

AU - Tsalas, M.

AU - Van Eester, D.

AU - Litaudon, X.

AU - Abduallev, S.

AU - Abhangi, M.

AU - Abreu, P.

AU - Afzal, M.

AU - Aggarwal, K. M.

AU - Ahlgren, T.

AU - Ahn, J. H.

AU - Aho-Mantila, L.

AU - Aiba, N.

AU - Airila, M.

AU - Albanese, R.

AU - Aldred, V.

AU - Alegre, D.

AU - Alessi, E.

AU - Aleynikov, P.

AU - Alfer, A.

AU - Alkseev, A.

AU - Allinson, M.

AU - Alper, B.

AU - Alves, E.

AU - Ambrosino, G.

AU - Ambrosino, R.

AU - Amicucci, L.

AU - Amosov, V.

AU - Sundén, E. Andersson

AU - Angelone, M.

AU - Anghel, M.

AU - Angioni, C.

AU - Appel, L.

AU - Appelbee, C.

AU - Arena, P.

AU - Ariola, M.

AU - Arnichand, H.

AU - Arshad, S.

AU - Ash, A.

AU - Ashikawa, N.

AU - Aslanyan, V.

AU - Asunta, O.

AU - Auriemma, F.

AU - Nicolas, T.

PY - 2018/2/1

Y1 - 2018/2/1

N2 - A set of experiments was carried out in JET ILW (Joint European Torus with ITER-Like Wall) L-mode plasmas in order to study the effects of light impurities on core ion thermal transport. N was puffed into some discharges and its profile was measured by active Charge Exchange diagnostics, while ICRH power was deposited on-and off-Axis in minority scheme in order to have a scan of local heat flux at constant total power with and without N injection. Experimentally, the ion temperature profiles are more peaked for similar heat fluxes when N is injected in the plasma. Gyro-kinetic simulations using the GENE code indicate that a stabilization of Ion Temperature Gradient driven turbulent transport due to main ion dilution and to changes in and s/q is responsible of the enhanced peaking. The quasi-linear models TGLF and QuaLiKiz are tested against the experimental and the gyro-kinetic results.

AB - A set of experiments was carried out in JET ILW (Joint European Torus with ITER-Like Wall) L-mode plasmas in order to study the effects of light impurities on core ion thermal transport. N was puffed into some discharges and its profile was measured by active Charge Exchange diagnostics, while ICRH power was deposited on-and off-Axis in minority scheme in order to have a scan of local heat flux at constant total power with and without N injection. Experimentally, the ion temperature profiles are more peaked for similar heat fluxes when N is injected in the plasma. Gyro-kinetic simulations using the GENE code indicate that a stabilization of Ion Temperature Gradient driven turbulent transport due to main ion dilution and to changes in and s/q is responsible of the enhanced peaking. The quasi-linear models TGLF and QuaLiKiz are tested against the experimental and the gyro-kinetic results.

KW - gyrokinetic simulations

KW - light impurities in JET

KW - nuclear fusion

KW - quasilinear simulations

KW - turbulent transport

U2 - 10.1088/1741-4326/aa9e7c

DO - 10.1088/1741-4326/aa9e7c

M3 - Article

AN - SCOPUS:85040646858

SN - 0029-5515

VL - 58

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 2

M1 - 026028

ER -

Effects of nitrogen seeding on core ion thermal transport in JET ILW L-mode plasmas

Résumé

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