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  Characteristics of type I ELM energy and particle losses in existing devices and their extrapolation to ITER

Loarte, A., Saibene, G., Sartori, R., Campbell, D., Becoulet, M., Horton, L., et al. (2003). Characteristics of type I ELM energy and particle losses in existing devices and their extrapolation to ITER. Plasma Physics and Controlled Fusion, 45, 1549-1569. doi:10.1088/0741-3335/45/9/302.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-3C31-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-3C32-0
Genre: Journal Article

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 Creators:
Loarte, A.1, Author
Saibene, G.1, Author
Sartori, R.1, Author
Campbell, D.1, Author
Becoulet, M.1, Author
Horton, L.2, Author              
Eich, T.2, Author              
Herrmann, A.2, Author              
Matthews, G.1, Author
Asakura, N.1, Author
Chankin, A.3, Author              
Leonard, A.1, Author
Porter, G.1, Author
Federici, G.1, Author
Janeschitz, G.4, Author              
Shimada, M.1, Author
Sugihara, M.5, Author              
Affiliations:
1EFDA-CSU, Max-Planck-Institut für Plasmaphysik, D-85748 Garching, Germany; Association Euratom-CEA, DRFC, CEA Cadarache, F-13108 St Paul lez Durance, France; EURATOM/UKAEA Fusion Association, Culham, Abingdon, Oxon, OX14 3DB, UK; Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki-ken, 311-01, Japan; General Atomics, PO Box 85608, San Diego, CA 92186-5608, USA; Lawrence Livermore National Laboratory, PO Box 808, Livermore, CA 94551-9900, USA; ITER-IT, Garching & Naka Working Sites, JEARI and MPI für Plasmaphysik, Germany & Japan; Forschungszentrum Karlsruhe, PO Box 3640, 76021 Karlsruhe, Germany, ou_persistent22              
2Experimental Plasma Physics 1 (E1), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856295              
3Tokamak Theory (TOK), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856309              
4External Organizations, ou_persistent22              
5Experimental Plasma Physics 2 (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856292              

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 Abstract: Analysis of Type I ELMs from ongoing experiments shows that ELM energy losses are correlated with the density and temperature of the pedestal plasma before the ELM crash. The Type I ELM plasma energy loss normalized to the pedestal energy is found to correlate across experiments with the collisionality of the pedestal plasma (ν*ped), decreasing with increasing ν*ped. Other parameters affect the ELM size, such as the edge magnetic shear, etc, which influence the plasma volume affected by the ELMs. ELM particle losses are influenced by this ELM affected volume and are weakly dependent on other pedestal plasma parameters. In JET and DIII-D, under some conditions, ELMs can be observed (`minimum' Type I ELMs with energy losses acceptable for ITER), that do not affect the plasma temperature. The duration of the divertor ELM power pulse is correlated with the typical ion transport time from the pedestal to the divertor target (τFront = 2πRq95/cs,ped) and not with the duration of the ELM-associated MHD activity. Similarly, the timescale of ELM particle fluxes is also determined by τFront. The extrapolation of the present experimental results to ITER is summarized.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
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Title: Plasma Physics and Controlled Fusion
  Alternative Title : Plasma Phys. Control. Fusion
Source Genre: Journal
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Publ. Info: Copyright © Institute of Physics and IOP Publishing Limited 2003
Pages: - Volume / Issue: 45 Sequence Number: - Start / End Page: 1549 - 1569 Identifier: -