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



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ID: 60030.0, MPI für Plasmaphysik / Articles, Books, Inbooks
Comparison of ITER performance predicted by semi-empirical and theory-based transport models
Authors:Mukhovatov, V.; Shimomura, Y.; Polevoi, A.; Shimada, M.; Sugihara, M.; Bateman, G.; Cordey, J. G.; Kardaun, O.; Pereverzev, G.; Voitsekhovich, I.; Weiland, J.; Zolotukhin, O.; Chudnovskiy, A.; Kritz, A. H.; Kukushkin, A.; Onjun, T.; Pankin, A.; Perkins, F. W.
Language:English
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Nuclear Fusion
Journal Abbrev.:Nucl. Fusion
Volume:43
Start Page:942
End Page:948
Copyright:Copyright © Institute of Physics and IOP Publishing Limited 2003
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The values of Q = (fusion power)/(auxiliary heating power) predicted for ITER by three different methods are compared. The first method utilizes an empirical confinement-time scaling and prescribed radial profiles of transport coefficients; the second approach extrapolates from specially designed ITER similarity experiments, and the third approach is based on partly theory-based transport models. The energy confinement time given by the ITERH-98(y, 2) scaling for an inductive scenario with a plasma current of 15 MA and a plasma density 15% below the Greenwald density is 3.7 s with one estimated technical standard deviation of ±14%. This translates, in the first approach, for levels of helium removal, and impurity concentration, that, albeit rather stringent, are expected to be attainable, into an interval for Q of [6–15] at the auxiliary heating power, Paux = 40 MW, and [6–30] at the minimum heating power satisfying a good confinement ELMy H-mode. All theoretical transport-model calculations have been performed for the plasma core only, whereas the pedestal temperatures were taken as estimated from empirical scalings. Predictions of similarity experiments from JET and of theory-based transport models that we have considered—Weiland, MMM, and IFS/PPPL—overlap with the prediction using the empirical confinement-time scaling within its estimated margin of uncertainty.
Free Keywords:ENERGY CONFINEMENT, PEDESTAL DATABASE, SIMULATIONS, TOKAMAK, JET, TEMPERATURE, DISCHARGES, TURBULENCE, OPERATION, PLASMAS
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Plasmaphysik/TOK
External Affiliations:ITER International Team, ITER Naka Joint Work Site, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan; Lehigh University, Bethlehem, PA 18015, USA; EURATOM-UKAEA Fusion Association, Culham Science Centre, Abingdon, UK; Equipe Turbulence Plasma, University of Provence, Marseilles, France; Chalmers University of Technology and EURATOM-NFR Association, Göteborg, Sweden; ITER International Team, ITER Garching Joint Work Site, Garching, Germany; Nuclear Fusion Institute, Russian Research Center 'Kurchatov Institute', Moscow, Russia; General Atomics 13-312, PO Box 85608, San Diego, CA 92186, USA
Identifiers:DOI:10.1088/0029-5515/43/9/318
URL:http://stacks.iop.org/0029-5515/43/942
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