Scenario development for the observation of alpha-driven instabilities in JET DT plasmas

JET Contributors

doi:10.1088/1741-4326/aab1bb

Scenario development for the observation of alpha-driven instabilities in JET DT plasmas

JET Contributors

Laboratory for Plasma Physics

Culham Centre for Fusion Energy
Forschungszentrum Jülich GmbH
Institute for Plasma Research
Instituto Superior Técnico
Queens University
University of Helsinki
Commissariat à l'Énergie Atomique (CEA)
VTT Technical Research Centre of Finland
National Institutes for Quantum and Radiological Science and Technology
University of Napoli 'Federico II'
Universidad Nacional de Educación a Distancia
Istituto di Fisica del Plasma Piero Caldirola
ITER
Consorzio Rfx
Kurchatov Institute
University of Napoli Parthenope
ENEA Centro Ricerche Frascati
Troitsk Insitute of Innovating and Thermonuclear Research (TRINITI)
Uppsala University
The National Institute for Cryogenics and Isotopic Technology
Max-Planck-Institut für Plasmaphysik
Università degli Studi di Catania
University of Ghent
Université Libre de Bruxelles
Fusion for Energy
National Institute for Fusion Science
Massachusetts Institute of Technology
Aalto University
University of Latvia
Imperial College London
Laboratorio Nacional de Fusión
University of Oxford
EUROfusion
Oak Ridge National Laboratory
Karlsruhe Institute of Technology
University of York
KTH Royal Institute of Technology
Maritime University of Szczecin
Institute of Nuclear Physics PAN
Institute of Plasma Physics, Academy of Sciences of the Czech Republic
University of Trento
Ecole Polytechnique Federale de Lausanne
Wigner Research Centre for Physics
University Mlynska
Lviv Polytechnic National University
University of Milano-Bicocca
The National Institute for Optoelectronics
Fourth State Research
University of Texas at Austin
Belgian Nuclear Research Centre
Narodowe Centrum Badań Jadrowych
Princeton Plasma Physics Laboratory
Université Aix Marseille
University of Cagliari
University of Warwick
Institute of Plasma Physics and Laser Microfusion
FOM Institute DIFFER
National Institute for Laser, Plasma and Radiation Physics
Jozef Stefan Institute
Université de Lorraine
Institute of Plasma Physics Chinese Academy of Sciences
Center for Energy Research
The 'Horia Hulubei' National Institute for Physics and Nuclear Engineering
Chalmers University of Technology
European Commission
Universidad Politécnica de Madrid
Second University of Napoli
Warsaw University of Technology
University of Basilicata
Barcelona Supercomputer Centre
University of Seville
Centro Brasileiro de Pesquisas Fisicas
University of Rome Tor Vergata
Ioffe Physical-Technical Institute of the Russian Academy of Sciences
General Atomics
Universitat Innsbruck
University of Toyama
University of Strathclyde
National Technical University of Athens
University of Tuscia
Technical University of Denmark
KAIST
Seoul National University
University College Cork
Vienna University of Technology
University of Opole
Daegu University
National Fusion Research Institute (NFRI)
Dublin City University
Pelin Llc
Arizona State University
Universidad Complutense de Madrid
University of Basel
Universidad Carlos III de Madrid
Consorzio CREATE
NCSR 'Demokritos'
Purdue University
University of California
Universidade de São Paulo
Lithuanian Energy Institute
HRS Fusion
Politecnico di Torino
University of Cassino
University of Electronic Science and Technology of China

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

40 Citations (Scopus)

Abstract

In DT plasmas, toroidal Alfvén eigenmodes (TAEs) can be made unstable by the alpha particles resulting from fusion reactions, and may induce a significant redistribution of fast ions. Recent experiments have been conducted in JET deuterium plasmas in order to prepare scenarios aimed at observing alpha-driven TAEs in a future JET DT campaign. Discharges at low density, large core temperatures associated with the presence of internal transport barriers and characterised by good energetic ion confinement have been performed. ICRH has been used in the hydrogen minority heating regime to probe the TAE stability. The consequent presence of MeV ions has resulted in the observation of TAEs in many instances. The impact of several key parameters on TAE stability could therefore be studied experimentally. Modeling taking into account NBI and ICRH fast ions shows good agreement with the measured neutron rates, and has allowed predictions for DT plasmas to be performed.

Original language	English
Article number	082005
Journal	Nuclear Fusion
Volume	58
Issue number	8
DOIs	https://doi.org/10.1088/1741-4326/aab1bb
Publication status	Published - 29 Jun 2018

Keywords

DT plasmas
JET
TAEs
alphas
instabilities
scenario

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10.1088/1741-4326/aab1bb

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@article{dbf0e9b38f77463b97daa0c40c9bdfbc,

title = "Scenario development for the observation of alpha-driven instabilities in JET DT plasmas",

abstract = "In DT plasmas, toroidal Alfv{\'e}n eigenmodes (TAEs) can be made unstable by the alpha particles resulting from fusion reactions, and may induce a significant redistribution of fast ions. Recent experiments have been conducted in JET deuterium plasmas in order to prepare scenarios aimed at observing alpha-driven TAEs in a future JET DT campaign. Discharges at low density, large core temperatures associated with the presence of internal transport barriers and characterised by good energetic ion confinement have been performed. ICRH has been used in the hydrogen minority heating regime to probe the TAE stability. The consequent presence of MeV ions has resulted in the observation of TAEs in many instances. The impact of several key parameters on TAE stability could therefore be studied experimentally. Modeling taking into account NBI and ICRH fast ions shows good agreement with the measured neutron rates, and has allowed predictions for DT plasmas to be performed.",

keywords = "DT plasmas, JET, TAEs, alphas, instabilities, scenario",

author = "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. Alfier 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 K. Cromb{\'e} and P. Dumortier and F. Durodi{\'e} and S. Jachmich and Y. Kazakov and A. Krivska and E. Lerche and A. Lyssoivan and A. Messiaen and S. Moradi and J. Ongena and R. Ragona and I. Stepanov and \{van Eester\}, D. and G. Verdoolaege and T. Wauters and \{JET Contributors\}",

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

year = "2018",

month = jun,

day = "29",

doi = "10.1088/1741-4326/aab1bb",

language = "English",

volume = "58",

journal = "Nuclear Fusion",

issn = "0029-5515",

number = "8",

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TY - JOUR

T1 - Scenario development for the observation of alpha-driven instabilities in JET DT plasmas

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 - Alfier, 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 - Crombé, K.

AU - Dumortier, P.

AU - Durodié, F.

AU - Jachmich, S.

AU - Kazakov, Y.

AU - Krivska, A.

AU - Lerche, E.

AU - Lyssoivan, A.

AU - Messiaen, A.

AU - Moradi, S.

AU - Ongena, J.

AU - Ragona, R.

AU - Stepanov, I.

AU - van Eester, D.

AU - Verdoolaege, G.

AU - Wauters, T.

AU - JET Contributors

PY - 2018/6/29

Y1 - 2018/6/29

N2 - In DT plasmas, toroidal Alfvén eigenmodes (TAEs) can be made unstable by the alpha particles resulting from fusion reactions, and may induce a significant redistribution of fast ions. Recent experiments have been conducted in JET deuterium plasmas in order to prepare scenarios aimed at observing alpha-driven TAEs in a future JET DT campaign. Discharges at low density, large core temperatures associated with the presence of internal transport barriers and characterised by good energetic ion confinement have been performed. ICRH has been used in the hydrogen minority heating regime to probe the TAE stability. The consequent presence of MeV ions has resulted in the observation of TAEs in many instances. The impact of several key parameters on TAE stability could therefore be studied experimentally. Modeling taking into account NBI and ICRH fast ions shows good agreement with the measured neutron rates, and has allowed predictions for DT plasmas to be performed.

AB - In DT plasmas, toroidal Alfvén eigenmodes (TAEs) can be made unstable by the alpha particles resulting from fusion reactions, and may induce a significant redistribution of fast ions. Recent experiments have been conducted in JET deuterium plasmas in order to prepare scenarios aimed at observing alpha-driven TAEs in a future JET DT campaign. Discharges at low density, large core temperatures associated with the presence of internal transport barriers and characterised by good energetic ion confinement have been performed. ICRH has been used in the hydrogen minority heating regime to probe the TAE stability. The consequent presence of MeV ions has resulted in the observation of TAEs in many instances. The impact of several key parameters on TAE stability could therefore be studied experimentally. Modeling taking into account NBI and ICRH fast ions shows good agreement with the measured neutron rates, and has allowed predictions for DT plasmas to be performed.

KW - DT plasmas

KW - JET

KW - TAEs

KW - alphas

KW - instabilities

KW - scenario

UR - https://www.scopus.com/pages/publications/85050403274

U2 - 10.1088/1741-4326/aab1bb

DO - 10.1088/1741-4326/aab1bb

M3 - Article

AN - SCOPUS:85050403274

SN - 0029-5515

VL - 58

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 8

M1 - 082005

ER -

Scenario development for the observation of alpha-driven instabilities in JET DT plasmas

Abstract

Keywords

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