Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2019-06-26
Department
Swiss Federal Institute of Technology Lausanne
Max-Planck-Institut für Plasmaphysik
Vienna University of Technology
KTH Royal Institute of Technology
Université Paris-Saclay
JET
Czech Academy of Sciences
National Research Council of Italy
University of Lisbon
University of Naples Federico II
Graz University of Technology
University of Naples Parthenope
Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile
Danmarks Tekniske Universitet
University of Seville
University of Oxford
EUROfusion Programme Management Unit
National Science Center Kharkov Institute of Physics and Technology
Eindhoven University of Technology
Forschungszentrum Jülich
CEA
University of York
Royal Military Academy
Chalmers University of Technology
Tuscia University
Università di Roma Tor Vergata
CNRS
University of Cagliari
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas - CIEMAT
Uppsala University
University of Warwick
Soltan Institute for Nuclear Studies
University of Innsbruck
Hungarian Academy of Sciences
Budapest University of Technology and Economics
Durham University
BarcelonaTech
University of Strathclyde
Barcelona Supercomputing Center
University of Milan - Bicocca
Karlsruhe Institute of Technology
Fusion and Plasma Physics
Jožef Stefan Institute
VTT Technical Research Centre of Finland
Dutch Institute for Fundamental Energy Research
Aristotle University of Thessaloniki
National Technical University of Athens
National Centre for Nuclear Research
University of Helsinki
Université Côte d'Azur
Polytechnic University of Turin
NASU - Institute of Nuclear Research
University of Cassino and Southern Lazio
University College Cork
National Institute for Laser, Plasma and Radiation Physics
Department of Applied Physics
Sofia University St. Kliment Ohridski
Ghent University
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Language
en
Pages
1-13
Series
Nuclear Fusion, Volume 59, issue 8
Abstract
Within the EUROfusion MST1 work package, a series of experiments has been conducted on AUG and TCV devices to disentangle the role of plasma fueling and plasma shape for the onset of small ELM regimes. On both devices, small ELM regimes with high confinement are achieved if and only if two conditions are fulfilled at the same time. Firstly, the plasma density at the separatrix must be large enough (ne,sep/nG ∼ 0.3), leading to a pressure profile flattening at the separatrix, which stabilizes type-I ELMs. Secondly, the magnetic configuration has to be close to a double null (DN), leading to a reduction of the magnetic shear in the extreme vicinity of the separatrix. As a consequence, its stabilizing effect on ballooning modes is weakened.
Description
| openaire: EC/H2020/633053/EU//EUROfusion
Keywords
ballooning modes, grassy ELMs, H-mode, plasma triangularity, separatrix density, type-II ELMs
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Labit , B , Eich , T , Harrer , G F , Wolfrum , E , Bernert , M , Dunne , M G , Frassinetti , L , Hennequin , P , Maurizio , R , Merle , A , Meyer , H , Saarelma , S , Sheikh , U , Adamek , J , Agostini , M , Aguiam , D , Akers , R , Albanese , R , Albert , C , Alessi , E , Ambrosino , R , Andr be , Y , Angioni , C , Apruzzese , G , Aradi , M , Arnichand , H , Auriemma , F , Avdeeva , G , Ayllon-Guerola , J M , Bagnato , F , Bandaru , V K , Barnes , M , Barrera-Orte , L , Bettini , P , Bilato , R , Biletskyi , O , Bilkova , P , Bin , W , Blanchard , P , Blanken , T , Bobkov , V , Bock , A , Boeyaert , D , Bogar , K , Bogar , O , Bohm , P , Bolzonella , T , Bombarda , F , Boncagni , L , Bouquey , F , Bowman , C , Brezinsek , S , Brida , D , Brunetti , D , Bucalossi , J , Buchanan , J , Buermans , J , Bufferand , H , Buller , S , Buratti , P , Burckhart , A , Calabr , G , Calacci , L , Camenen , Y , Cannas , B , Cano Megías , P , Carnevale , D , Carpanese , F , Carr , M , Carralero , D , 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D , Galassi , D , Gałązka , K , Galdon-Quiroga , J , Galeani , S , Gallart , D , Gallo , A , Galperti , C , Garavaglia , S , Garcia , J , Garcia-Lopez , J , Garcia-Mu oz , M , Garzotti , L , Gath , J , Geiger , B , Giacomelli , L , Giannone , L , Gibson , S , Gil , L , Giovannozzi , E , Giruzzi , G , Gobbin , M , Gonzalez-Martin , J , Goodman , T P , Gorini , G , Gospodarczyk , M , Granucci , G , Grekov , D , Grenfell , G , Griener , M , Groth , M , Grover , O , Gruca , M , Gude , A , Guimarais , L , Gyergyek , T , Hacek , P , Hakola , A , Ham , C , Happel , T , Harrison , J , Havranek , A , Hawke , J , Henderson , S , Hesslow , L , Hitzler , F , Hnat , B , Hobirk , J , Hoelzl , M , Hogeweij , D , Hopf , C , Hoppe , M , Horacek , J , Hron , M , Huang , Z , Iantchenko , A , Iglesias , D , Igochine , V , Innocente , P , Ionita-Schrittwieser , C , Isliker , H , Ivanova-Stanik , I , Jacobsen , A , Jakubowski , M , Janky , F , Jardin , A , Jaulmes , F , Jensen , T , Jonsson , T , Kallenbach , A , Kappatou , A , Karpushov , A , Kasilov , S , Kazakov , Y , Kazantzidis , P V , Keeling , D , Kelemen , M , Kendl , A , Kernbichler , W , Kirk , A , Kocsis , G , Komm , M , Kong , M , Korovin , V , Koubiti , M , Kovacic , J , Krawczyk , N , Krieger , K , Kripner , L , Křivská , A , Kudlacek , O , Kulyk , Y , Kurki-Suonio , T , Kwiatkowski , R , Laggner , F , Laguardia , L , Lahtinen , A , Lang , P , Likonen , J , Lipschultz , B , Liu , F , Lombroni , R , Lorenzini , R , Loschiavo , V P , Lunt , T , MacUsova , E , Madsen , J , Maggiora , R , Maljaars , B , Manas , P , Mantica , P , Mantsinen , M J , Manz , P , Maraschek , M , Marchenko , V , Marchetto , C , Mariani , A , Marini , C , Markovic , T , Marrelli , L , Martin , P , Martín Solís , J R , Martitsch , A , Mastrostefano , S , Matos , F , Matthews , G , Mayoral , M L , Mazon , D , Mazzotta , C , Mc Carthy , P , McClements , K , McDermott , R , McMillan , B , Meineri , C , Menkovski , V , Meshcheriakov , D , Messmer , M , 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