Overview of JET results in support of the ITER physics basis

Authors
Adams, JM Ageladarakis, P Alper, B Altmann, H Arshad, S Bainbridge, N Balet, B Baranov, Y Barker, P Barnsley, R Bartlett, DV Begue, ML Bell, AC Bertalot, L Bertolini, E Beurskens, M Bevil, C Bickley, AJ Bigi, M Bird, S Blackler, K Bond, D Borba, D Brandon, M Brelen, H Brennan, P Brewerton, WJ Brix, M Browne, ML Budd, T Budny, R Butcher, P Buttery, R Caldwell-Nichols, C Campling, D Card, P Challis, CD Chankin, AV Charlet, M Chen, H Chiron, D Christiansen, J Ciric, D Clement, S Coad, JP Coffey, I Conroy, S Conway, G Cooper, S Cordey, JG Corrigan, G Cottrell, G Cox, R Cox, SJ Crisanti, F Cusack, R Davies, N Davies, SJ Davis, JJ de Angelis, R de Antonis, P DeBaar, M de Benedetti, M Deliyanakis, N Dines, A Dmitrenko, SL Dobbing, J Dolgetta, N Dorling, SE Duquenoy, H Edwards, AM Elsmore, CG Ellis, J Erents, SK Ericsson, G Esposito, B Falter, H Farthing, JW Fasoli, A Felton, R Ferrieres, P Fessey, J Fichtmuller, M Fullard, K Gadeberg, M Garbil, R Gibson, A Gill, RD Giovannozzi, E Giroud, C Godden, D Goff, JK Gondhalekar, A Goodyear, A Gormezano, C Gowers, C Griph, FS Groth, M Guenther, K Guo, H Haigh, A Haist, B Hamilton, D Hancock, CJ Harbour, PJ Harling, JDW Hawkes, NC Hawkes, NP Heading, D Heeter, RF Hemmerich, JL Hemming, ON Hender, T Hitchin, M Hogben, CHA Horton, L Howie, J Huart, M Ingesson, C Jacquinot, J Jaeckel, H Jaeger, JF Jarvis, ON Jeral, JP Joffrin, E Johnson, M Jones, EM Jones, TTC Junger, JF Jupen, C Kallne, J Kaye, A Keilhacker, M Kidd, NG Knight, P Knipe, S Korotkov, A Kupschus, P LaHaye, R Lamalle, P Last, JR Lawson, K Lennholm, M Lescure, C Lingertat, J Litaudon, X Lomas, PJ Lowry, C Lucock, RMA Maas, AC Maddison, G Maget, P Maggi, CF Mailloux, J Mantsinen, M Mart, J Martin, D Matthews, G Mazon, P McCracken, G McCullen, PA McDonald, D Meigs, A Middleton, R Miele, P Milani, F Mills, J Morgan, P Nave, F Newbert, G Nielsen, P Noll, P Norman, K O'Mullane, M Oord, E Orchard, J Parail, VV Parkin, A Parsons, W Patel, B Paynter, A Pearce, RJH Perevezentsev, A Pick, MA Plancoulaine, J Podda, S Pogutse, O Prentice, R Purahoo, K Rainford, M Rapp, J Riccardo, V Richardson, S Righi, E Rimini, F Robson, D Rolfe, A Romanelli, M Roquemore, AL Ross, RT Saibene, G Sarazin, Y Sartori, F Sartori, R Schild, P Schilham, A Schmid, M Schmidt, V Sharapov, S Shaw, SR Sibley, A Simon, M Sips, ACC Smeulders, P Solano, E Soldner, F Spence, J Stafford-Allen, R Stagg, R Stamp, M Stangeby, P Stevens, AL Stork, D Stott, PE Strachan, JD Strait, EJ Stratton, BC Stubberfield, P Summers, D Summers, HP Svensson, P Tabellini, M Tait, J Tala, T Tanga, A Taroni, A Testa, DS Thomas, PR Thomsen, H Thomsen, K Todd, JM Traneus, E Tuccillo, A Tunklev, M Twynam, P von Hellermann, M Wade, T Walden, A Walton, R Ward, D Watkins, ML Watkins, N Watson, MJ Wheatley, MR Whitehurst, A Wilson, CH Wilson, D Wilson, HR Winkel, T Young, D Young, ID Zastrow, KD Zerbini, M
Citation
Jm. Adams et al., Overview of JET results in support of the ITER physics basis, NUCL FUSION, 41(10), 2001, pp. 1327-1340
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR FUSION
ISSN journal
0029-5515 → ACNP
Volume
41
Issue
10
Year of publication
2001
Pages
1327 - 1340
Database
ISI
SICI code
0029-5515(200110)41:10<1327:OOJRIS>2.0.ZU;2-2
Abstract
The JET experimental campaign has focused on studies in support of the ITER physics basis. An overview of the results obtained is given for the refere nce ELMy H mode and advanced scenarios, which in JET are based on internal transport barriers. JET studies for ELMy H mode have been instrumental in t he definition of ITER FEAT. Positive elongation and current scaling in the ITER scaling law have been confirmed, but the observed density scaling fits a two term (core and edge) model better. Significant progress in neoclassi cal tearing mode limits has been made showing that ITER operation with q(95 ) around 3.3 seems to be optimized. Effective helium pumping and divertor e nrichment is found to be well within ITER requirements. Target asymmetries and hydrogen isotope retention are well simulated by modelling codes taking into account drift flows in the scrape-off plasmas. Striking improvements in fuelling effectiveness have been made with the new high field pellet lau nch facility. Good progress has been made on scenarios for achieving good c onfinement at high densities, both with radiation improved modes and with h igh field side pellets. Significant development of advanced scenarios, in v iew of their application to ITER, has been achieved. Progress towards integ rated advanced scenarios is well developed with edge pressure control (impu rity radiation). An access domain has been explored showing, in particular, that the power threshold increases with magnetic field but can be signific antly reduced when lower hybrid current drive is used to produce target pla smas with negative shear. The role of ion pressure peaking on MHD has been well documented. Lack of sufficient additional heating power and interactio n with the septum at high beta prevents assessment of the beta limits (stea dy plasmas achieved with beta (N) up to 2.6). Plasmas with a non-inductive current (I-NI/I-p = 60%), well aligned with the plasma current, high beta a nd good confinement have also been obtained.