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          Institute: MPI für Plasmaphysik     Collection: Articles, Books, Inbooks     Display Documents

ID: 55954.0, MPI für Plasmaphysik / Articles, Books, Inbooks
Comparing scrape-off layer and divertor physics in JET pure He and D discharges
Authors:Pitts, R. A.; Andrew, P.; Andrew, Y.; Becoulet, C.; Coffey, I.; Coster, D.; McDonald, D. C.; Eich, T.; Erents, S. K.; Fenstermacher, M. E.; Fundamenski, W.; Haas, G.; Herrmann, A.; Hidalgo, C.; Hillis, D.; Huber, A.; Ingesson, L. C.; Jachmich, S.; Kallenbach, A.; Korotkov, A.; Lawson, K.; Lomas, P.; Loarer, T.; Loarte, A.; Matthews, G. F.; McCracken, G.; Meigs, A.; Mertens, P.; O'Mullane, M.; Philipps, V.; Porter, G.; Pospieszczyk, A.; Rapp, J.; Reiter, D.; Riccardo, V.; Saibene, G.; Sartori, R.; Stamp, M. F.; Tsitrone, E.; Wischmeier, M.; Gafert, J.; Contributors to the EFDA-JET Workprogramme
Research Context:Plasma-Surface Interactions in Controlled Fusion Devices (PSI-15), Gifu, 2002-05-26 to 2002-05-31
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Journal of Nuclear Materials
Journal Abbrev.:J. Nucl. Mater.
Start Page:777
End Page:786
Copyright:Copyright © 2003 Elsevier Science B.V. All rights reserved
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has therefore sought to address some of the important questions related to helium operation (He concentrations near 90%) in single null configuruations, particularly with regard to edge and divertor physics. This contribution compiles a selection of results from these experiments, in which, in each case, discharges have been chosen to match as closely as possible previous, well characterised D plasmas in both L and ELMing H-modes. These matched pulses are used to draw conclusions regarding the principle source and location of carbon production in D plasmas, to compare and contrast the mechanisms of the density limit and the detachment process in D and He, to investigate the nature of cross-field power transport in the SOL and to gain insight into the process by which ELM energy is transported to the divertor targets.
Free Keywords:Tokamak; Divertor; Helium; Density limit; Carbon source; Detachment
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Plasmaphysik/Tokamak Scenario Development (E1)
External Affiliations:Centre de Recherches en Physique des Plasmas, Association EURATOM-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland; Euratom/UKAEA Fusion Association, Culham Science Centre, OX14 3DB Abingdon, UK; Association EURATOM-CEA, CEA Cadarache, 13018 St. Paul lez Durance, France; Lawrence Livermore National Laboratory, Livermore, CA 94551, USA; Asociación EURATOM-CIEMAT, 28040, Madrid, Spain; Oak Ridge National Laboratory, Oak Ridge, TN, USA; FZJ Julich GmbH/Euratom Institut für Plasmaphysik, TEC, D-52425 Julich, Germany; FOM-Rijnhuizen, Association Euratom-FOM, TEC, P.O. Box 1207, 3430 BE Nieuwegein, Netherlands; LPP, ERM/KMS, Association Euratom-Belgian State, B-1000, Brussels, Belgium; EFDA-CSU, Max-Planck-Institut für Plasmaphysik, D-85748 Garching, Germany
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