Progress towards steady-state operation and real-time control of internal transport barriers in JET

被引：61

作者：

Litaudon, X ^{[1
]}

Bécoulet, A

Crisanti, F

Wolf, RC

Baranov, YF

Barbato, E

Bécoulet, M

Budny, R

Castaldo, C

Cesario, R

Challis, CD

Conway, GD

De Baar, MR

De Vries, P

Dux, R

Eriksson, LG

Esposito, B

Felton, R

Fourment, C

Frigione, D

Garbet, X

Giannella, R

Giroud, C

Gorini, G

Hawkes, NC

Hellsten, T

Hender, TC

Hennequin, P

Hogeweij, GMD

Huysmans, GTA

Imbeaux, F

Joffrin, E

Lomas, PJ

Lotte, P

Maget, P

Mailloux, J

Mantica, P

Mantsin, MJ

Mazon, D

Moreau, D

Parail, V

Pericoli, V

Rachlew, E

Riva, M

Rimini, F

Sarazin, Y

Stratton, BC

Tala, TJJ

Tresset, G

Tudisco, O

机构：

[1] CEA Cadarache, Assoc EURATOM CEA, F-13108 St Paul Les Durance, France

[2] Ctr Ric Frascati, Assoc EURATOM ENEA Fus, Frascati, Italy

[3] Assoc EURATOM FZJ, Inst Plasmaphys, D-52425 Julich, Germany

[4] UKAEA, EURATOM Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[5] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[6] EURATOM, Max Planck Inst Plasmaphys, Garching, Germany

[7] EURATOM, FOM, TEC, NL-3430 BE Nieuwegein, Netherlands

[8] CNR Assoc, ENEA, EURATOM, Inst Fis Plasma, Milan, Italy

[9] Assoc EURATOM VR, KTH, Dept Phys, S-10044 Stockholm, Sweden

[10] VTT Chem Technol, Assoc EURATOM TEKES, FIN-02044 Espoo, Finland

来源：

NUCLEAR FUSION | 2003年 / 43卷 / 07期

关键词：

D O I：

10.1088/0029-5515/43/7/309

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

In JET, advanced tokamak research mainly focuses on plasmas with internal transport barriers (ITBs) that are strongly influenced by the current density profile. A previously developed optimized shear regime with low magnetic shear in the plasma centre has been extended to deeply negative magnetic shear configurations. High fusion performance with wide ITBs has been obtained transiently with negative central magnetic shear configuration: H-IPB98(y,H-2) similar to 1.9, beta(N) = 2.4 at I-p = 2.5 MA. At somewhat reduced performance, electron and ion ITBs have been sustained in full current drive operation with 1 MA of bootstrap current: H-IPB98(y,H-2) similar to 1, beta(N) = 1.7 at I-p = 2.0 MA. The ITBs were maintained for up to 11 s for the latter case. This duration, much larger than the energy confinement time (37 times larger), is already approaching a current resistive time. New real-time measurements and feedback control algorithms have been developed and implemented in JET for successfully controlling the ITB dynamics and the current density profile in the highly non-inductive current regime.

引用

页码：565 / 572

页数：8

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