JET confinement studies and their scaling to high βN, ITER scenarios

被引：24

作者：

McDonald, D. C. ^{[1
,2
]}

Laborde, L. ^{[1
,2
]}

DeBoo, J. C. ^{[1
,3
]}

Ryter, F. ^{[1
,4
]}

Brix, M. ^{[1
,2
]}

Challis, C. D. ^{[1
,2
]}

de Vries, P. ^{[1
,2
]}

Giroud, C. ^{[1
,2
]}

Hobirk, J. ^{[1
,4
]}

Howell, D. ^{[1
,2
]}

Joffrin, E. ^{[1
,5
]}

Luce, T. C. ^{[1
,3
]}

Mailloux, J. ^{[1
,2
]}

Pericoli-Ridolfini, V. ^{[1
,6
]}

Sips, A. C. C. ^{[1
,4
]}

Thomsen, K. ^{[1
,7
]}

机构：

[1] JET EFDA, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] EURATOM, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[3] Gen Atom Co, San Diego, CA 92186 USA

[4] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany

[5] CEA Cadarache, Assoc Euratom CEA, F-13108 St Paul Les Durance, France

[6] Assoc Euratom ENEA Fus, I-00044 Frascati, Italy

[7] EFDA Close Support Unit, D-85740 Garching, Germany

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2008年 / 50卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1088/0741-3335/50/12/124013

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：

The ITER hybrid scenario aims to exploit non-inductive current drive to enable burn times in excess of 1000 s. To achieve this, and optimize fusion performance, requires high beta(N) (the plasma pressure normalized to a stability scaling) and energy confinement equal to or greater than that predicted for the baseline scenario. This paper discusses results from the JET candidate hybrid scenario, where beta(N,MHD) <= 3.6 plasmas have been produced. Despite a different initial phase, confinement relevant plasma parameters evolve rapidly towards those of equivalent ELMy H-modes and are well described by IPB98(y, 2). In contrast to previous ELMy H-mode studies, a dedicated beta scan experiment in the JET hybrid candidate scenario shows a strong negative dependence of global confinement on beta(N). Analysis indicates that the core transport remains consistent with weakly dependent electrostatic transport, whilst the edge confinement decreases strongly with increasing beta(N). By combining global confinement data from ASDEX Upgrade, DIII-D and JET hybrid scenario discharges, a multi-machine database is produced. In contrast to the JET case, confinement in ASDEX Upgrade and DIII-D is shown to be inconsistent with IPB98( y, 2) and alternative dependences are explored.

引用

页数：10

共 37 条

[1] Local transport in joint European Tokamak edge-localized, high-confinement mode plasmas with H, D, DT, and T isotopes [J].

Budny, RV ;

Ernst, DR ;

Hahm, TS ;

McCune, DC ;

Christiansen, JP ;

Cordey, JG ;

Gowers, CG ;

Guenther, K ;

Hawkes, N ;

Jarvis, ON ;

Stubberfield, PM ;

Zastrow, KD ;

Horton, LD ;

Saibene, G ;

Sartori, R ;

Thomsen, K ;

von Hellermann, MG .

PHYSICS OF PLASMAS, 2000, 7 (12) :5038-5050

[2] Simulations of alpha parameters in a TFTR DT supershot with high fusion power [J].

Budny, RV ;

Bell, MG ;

Janos, AC ;

Jassby, DL ;

Johnson, LC ;

Mansfield, DK ;

McCune, DC ;

Redi, MH ;

Schivell, JF ;

Taylor, G ;

Terpstra, TB ;

Zarnstorff, MC ;

Zweben, SJ .

NUCLEAR FUSION, 1995, 35 (12) :1497-1508

[3] Onset of neoclassical tearing modes on JET [J].

Buttery, RJ ;

Hender, TC ;

Howell, DF ;

La Haye, RJ ;

Sauter, O ;

Testa, D .

NUCLEAR FUSION, 2003, 43 (02) :69-83

[4] Beta scaling of transport in microturbulence simulations [J].

Candy, J .

PHYSICS OF PLASMAS, 2005, 12 (07) :1-8

[5] Simulations of turbulent transport with kinetic electrons and electromagnetic effects [J].

Chen, Y ;

Parker, SE ;

Cohen, BI ;

Dimits, AM ;

Nevins, WM ;

Shumaker, D ;

Decyk, VK ;

Leboeuf, JN .

NUCLEAR FUSION, 2003, 43 (10) :1121-1127

[6] β scaling of confinement [J].

Christiansen, JP ;

Cordey, JG .

NUCLEAR FUSION, 1998, 38 (12) :1757-1766

[7] A review of models for ELMs [J].

Connor, JW .

PLASMA PHYSICS AND CONTROLLED FUSION, 1998, 40 (02) :191-213

[8] Chapter 2: Plasma confinement and transport [J].

Department of Electrical Engineering, PSTI, University of California, Los Angeles, CA, United States ;

不详 ;

不详 .

Nucl Fusion, 2007, 6 (S18-S127) :S18-S127

[9] NEW TECHNIQUES FOR CALCULATING HEAT AND PARTICLE SOURCE RATES DUE TO NEUTRAL BEAM INJECTION IN AXISYMMETRIC TOKAMAKS [J].

GOLDSTON, RJ ;

MCCUNE, DC ;

TOWNER, HH ;

DAVIS, SL ;

HAWRYLUK, RJ ;

SCHMIDT, GL .

JOURNAL OF COMPUTATIONAL PHYSICS, 1981, 43 (01) :61-78

[10] ITER: burning plasma physics experiment [J].

Green, BJ .

PLASMA PHYSICS AND CONTROLLED FUSION, 2003, 45 (05) :687-706

← 1 2 3 4 →