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Understanding JET-C...
Understanding JET-C quiescent phases with edge harmonic magnetohydrodynamic activity and comparison with behaviour under ITER-like wall conditioning
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- Brunetti, D. (author)
- UKAEA-CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, United Kingdom, Abingdon,Culham Sci Ctr, UKAEA CCFE, Abingdon OX14 3DB, Oxon, England.
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- Ham, C. J. (author)
- UKAEA-CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, United Kingdom, Abingdon,Culham Sci Ctr, UKAEA CCFE, Abingdon OX14 3DB, Oxon, England.
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- Graves, J. P. (author)
- École Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland,Ecole Polytech Fed Lausanne EPFL, Swiss Plasma Ctr SPC, CH-1015 Lausanne, Switzerland.
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- Lazzaro, E. (author)
- Istituto per la Scienza e Tecnologia dei Plasmi CNR, Via R. Cozzi 53, 20125 Milan, Italy, Via R. Cozzi 53,Ist Sci & Tecnol Plasmi CNR, Via R Cozzi 53, I-20125 Milan, Italy.
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- Nowak, S. (author)
- Istituto per la Scienza e Tecnologia dei Plasmi CNR, Via R. Cozzi 53, 20125 Milan, Italy, Via R. Cozzi 53,Ist Sci & Tecnol Plasmi CNR, Via R Cozzi 53, I-20125 Milan, Italy.
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- Mariani, A. (author)
- Dipartimento di Fisica ‘G. Occhialini’, Università di Milano-Bicocca, Milan, Italy,Univ Milano Bicocca, Dipartimento Fis G Occhialini, Milan, Italy.
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- Wahlberg, Christer (author)
- Uppsala universitet,Rymd- och plasmafysik
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- Cooper, W. A. (author)
- Swiss Alps Fusion Energy (SAFE), CH-1864 Vers l’Eglise, Switzerland,Swiss Alps Fus Energy SAFE, CH-1864 Vers Leglise, Switzerland.
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- Solano, E. R. (author)
- Laboratorio Nacional de Fusión, CIEMAT, Madrid, Spain,CIEMAT, Lab Nacl Fus, Madrid, Spain.
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- Saarelma, S. (author)
- UKAEA-CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, United Kingdom, Abingdon,Culham Sci Ctr, UKAEA CCFE, Abingdon OX14 3DB, Oxon, England.
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- Frassinetti, Lorenzo (author)
- KTH,Fusionsplasmafysik,KTH Royal Inst Technol, Div Fus Plasma Phys, Stockholm, Sweden.
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- Fontana, M. (author)
- École Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland,Ecole Polytech Fed Lausanne EPFL, Swiss Plasma Ctr SPC, CH-1015 Lausanne, Switzerland.
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- Kleiner, A. (author)
- Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543, United States of America,Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA.
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- Bustos Ramirez, G. (author)
- École Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), CH-1015 Lausanne, Switzerland,Ecole Polytech Fed Lausanne EPFL, Swiss Plasma Ctr SPC, CH-1015 Lausanne, Switzerland.
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- Viezzer, E. (author)
- Department of Atomic, Molecular and Nuclear Physics, University of Seville, Avda. Reina Mercedes, 41012 Seville, Spain, Avda. Reina Mercedes,Univ Seville, Dept Atom Mol & Nucl Phys, Avda Reina Mercedes, Seville 41012, Spain.
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UKAEA-CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB, United Kingdom, Abingdon Culham Sci Ctr, UKAEA CCFE, Abingdon OX14 3DB, Oxon, England (creator_code:org_t)
- 2022-02-18
- 2022
- English.
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In: Plasma Physics and Controlled Fusion. - : IOP Publishing. - 0741-3335 .- 1361-6587. ; 64:4
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Abstract
Subject headings
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- An analysis of edge localised mode-free (quiescent) H-mode discharges exhibiting edge harmonic magnetoydrodynamic activity in the JET-carbon wall machine is presented. It is observed that the otherwise quiescent pulses with multiple-n harmonic oscillations are sustained until a threshold in pedestal electron density and collisionality is crossed. The macroscopic pedestal parameters associated with the quiescent phase are compared with those of a database of JET-ELMy discharges with both carbon and ITER-like wall (ILW). This comparison provides the identification of the existence regions in the relevant pedestal and global plasma parameters for edge harmonic oscillations (EHOs) in JET plasmas. Although the ELMy database scans pedestal collisionality and β values typical of ET-carbon quiescent operation, shaping and current are not simultaneously compatible with EHO existence. Nevertheless, ILW operation with JET-carbon quiescent-like parameters could in principle be achieved, and improved pedestal performance could be observed in more recent JET-ILW pulses.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Keyword
- EHO
- ELMs
- JET
- QH-mode
- tokamak
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Brunetti, D.
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Ham, C. J.
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Graves, J. P.
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Lazzaro, E.
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Nowak, S.
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Mariani, A.
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Wahlberg, Christ ...
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Cooper, W. A.
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Solano, E. R.
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Saarelma, S.
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Frassinetti, Lor ...
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Fontana, M.
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Kleiner, A.
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Bustos Ramirez, ...
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Viezzer, E.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
- Articles in the publication
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Plasma Physics a ...
- By the university
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Royal Institute of Technology
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Uppsala University