Improved confinement in JET hybrid Discharges (Articolo in rivista)

Type
Label
  • Improved confinement in JET hybrid Discharges (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0741-3335/54/9/095001 (literal)
Alternative label
  • Hobirk, J [ 1 ] ; Imbeaux, F [ 2 ] ; Crisanti, F [ 3 ] ; Buratti, P [ 3 ] ; Challis, CD [ 4 ] ; Joffrin, E [ 2,5 ] ; Alper, B [ 4 ] ; Andrew, Y [ 4 ] ; Beaumont, P [ 4 ] ; Beurskens, M [ 4 ] ; Boboc, A [ 4 ] ; Botrugno, A [ 3 ] ; Brix, M [ 4 ] ; Calabro', G [ 3 ] ; Coffey, I [ 6 ] ; Conroy, S [ 7 ] ; Ford, O ; Frigione, D [ 3 ] ; Garcia, J [ 2 ] ; Giroud, C [ 4 ] ; Hawkes, NC [ 4 ] ; Howell, D [ 4 ] ; Jenkins, I [ 4 ] ; Keeling, D [ 4 ] ; Kempenaars, M [ 4 ] ; Leggate, H [ 4 ] ; Lotte, P [ 2 ] ; de la Luna, E [ 5 ] ; Maddison, GP [ 4 ] ; Mantica, P [ 8 ] ; Mazzotta, C [ 3 ] ; McDonald, DC [ 4 ] ; Meigs, A [ 4 ] ; Nunes, I [ 9 ] ; Rachlew, E [ 10 ] ; Rimini, F [ 5 ] ; Schneider, M [ 2 ] ; Sips, ACC [ 5 ] ; Stober, JK [ 1 ] ; Studholme, W [ 4 ] ; Tala, T [ 11 ] ; Tsalas, M [ 12 ] ; Voitsekhovitch, I [ 4 ] ; de Vries, PC [ 12 ]; and JET-EFDA contributors (2012)
    Improved confinement in JET hybrid Discharges
    in Plasma physics and controlled fusion (Online); IOP Publishing Ltd., Bristol BS1 6BE (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Hobirk, J [ 1 ] ; Imbeaux, F [ 2 ] ; Crisanti, F [ 3 ] ; Buratti, P [ 3 ] ; Challis, CD [ 4 ] ; Joffrin, E [ 2,5 ] ; Alper, B [ 4 ] ; Andrew, Y [ 4 ] ; Beaumont, P [ 4 ] ; Beurskens, M [ 4 ] ; Boboc, A [ 4 ] ; Botrugno, A [ 3 ] ; Brix, M [ 4 ] ; Calabro', G [ 3 ] ; Coffey, I [ 6 ] ; Conroy, S [ 7 ] ; Ford, O ; Frigione, D [ 3 ] ; Garcia, J [ 2 ] ; Giroud, C [ 4 ] ; Hawkes, NC [ 4 ] ; Howell, D [ 4 ] ; Jenkins, I [ 4 ] ; Keeling, D [ 4 ] ; Kempenaars, M [ 4 ] ; Leggate, H [ 4 ] ; Lotte, P [ 2 ] ; de la Luna, E [ 5 ] ; Maddison, GP [ 4 ] ; Mantica, P [ 8 ] ; Mazzotta, C [ 3 ] ; McDonald, DC [ 4 ] ; Meigs, A [ 4 ] ; Nunes, I [ 9 ] ; Rachlew, E [ 10 ] ; Rimini, F [ 5 ] ; Schneider, M [ 2 ] ; Sips, ACC [ 5 ] ; Stober, JK [ 1 ] ; Studholme, W [ 4 ] ; Tala, T [ 11 ] ; Tsalas, M [ 12 ] ; Voitsekhovitch, I [ 4 ] ; de Vries, PC [ 12 ]; and JET-EFDA contributors (literal)
Pagina inizio
  • 095001 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0741-3335/54/9/095001/pdf/0741-3335_54_9_095001.pdf (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 54 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 9 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany [ 2 ] CEA, IRFM, F-13108 St Paul Les Durance, France [ 3 ] ASSOC EURATOM ENEA Fus CR, FRASCATI, I-00044 Frascati, Italy [ 4 ] EURATOM CCFE Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England [ 5 ] EFDA CSU Culham, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England [ 6 ] Queens Univ Belfast, Belfast BT7 1NN, Antrim, North Ireland [ 7 ] Uppsala Univ, EURATOM Assoc, Dept Phys & Astron, SE-75121 Uppsala, Sweden [ 8 ] Assoc EURATOM ENEA CNR, Istituto di Fisica del Plasma, Milan, Italy [ 9 ] Assoc EURATOM IST, Inst Plasmas & Fusao Nucl, P-1049001 Lisbon, Portugal [ 10 ] KTH, Dept Phys, Assoc Euratom VR, SE-10691 Stockholm, Sweden [ 11 ] VTT, Assoc Euratom Tekes, Espoo 02044, Finland [ 12 ] EURATOM, FOM Inst Rijnhuizen, NL-3430 BE Nieuwegein, Netherlands [ 13 ] JET EFDA, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England (literal)
Titolo
  • Improved confinement in JET hybrid Discharges (literal)
Abstract
  • A new technique has been developed to produce plasmas with improved confinement relative to the H-98,H-y2 scaling law (ITER Physics Expert Groups on Confinement and Transport and Confinement Modelling and Database ITER Physics Basics Editors and ITER EDA 1999 Nucl. Fusion 39 2175) on the JET tokamak. In the mid-size tokamaks ASDEX upgrade and DIII-D heating during the current formation is used to produce a flat q-profile with a minimum close to 1. On JET this technique leads to q-profiles with similar minimum q but opposite to the other tokamaks not to an improved confinement state. By changing the method utilizing a faster current ramp with temporary higher current than in the flattop (current overshoot) plasmas with improved confinement (H-98,H-y2 = 1.35) and good stability (beta(N) approximate to 3) have been produced and extended to many confinement times only limited by technical constraints. The increase in H-98,H-y2-factor is stronger with more heating power as can be seen in a power scan. The q-profile development during the high power phase in JET is reproduced by current diffusion calculated by TRANSP and CRONOS. Therefore the modifications produced by the current overshoot disappear quickly from the edge but the confinement improvement lasts longer, in some cases up to the end of the heating phase. (literal)
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