Scaling of the tokamak near the scrape-off layer H-mode power width and implications for ITER

被引：534

作者：

Eich, T. ^{[1
]}

Leonard, A. W. ^{[2
]}

Pitts, R. A. ^{[3
]}

Fundamenski, W. ^{[4
]}

Goldston, R. J. ^{[5
]}

Gray, T. K. ^{[6
]}

Herrmann, A. ^{[1
]}

Kirk, A. ^{[4
]}

Kallenbach, A. ^{[1
]}

Kardaun, O. ^{[1
]}

Kukushkin, A. S. ^{[3
]}

LaBombard, B. ^{[7
]}

Maingi, R. ^{[5
,6
]}

Makowski, M. A. ^{[8
]}

Scarabosio, A. ^{[1
]}

Sieglin, B. ^{[1
]}

Terry, J. ^{[7
]}

Thornton, A. ^{[4
]}

机构：

[1] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[2] Gen Atom, San Diego, CA 92186 USA

[3] ITER Org, F-13115 St Paul Les Durance, France

[4] EURATOM, Culham Sci Ctr, CCFE, Abingdon, Oxon, England

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

[6] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[7] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA

[8] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

来源：

NUCLEAR FUSION | 2013年 / 53卷 / 09期

关键词：

ALCATOR C-MOD; HEAT-FLUX; JET; FLUCTUATIONS; TRANSPORT; ASDEX;

D O I：

10.1088/0029-5515/53/9/093031

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：

Amulti-machine database for the H-mode scrape-off layer power fall-off length, lambda(q) in JET, DIII-D, ASDEX Upgrade, C-Mod, NSTX and MAST has been assembled under the auspices of the International Tokamak Physics Activity. Regression inside the database finds that the most important scaling parameter is the poloidal magnetic field (or equivalently the plasma current), with lambda(q) decreasing linearly with increasing B-pol. For the conventional aspect ratio tokamaks, the regression finds lambda(q) alpha B-tor(-0.8). q(95)(1.1).P-SOL(0.1).R-geo(0), yielding lambda(q,) (ITER) congruent to 1mm for the baseline inductive H-mode burning plasma scenario at I-p = 15 MA. The experimental divertor target heat flux profile data, from which lambda(q) is derived, also yield a divertor power spreading factor (S) which, together with lambda(q), allows an integral power decay length on the target to be estimated. There are no differences in the lambda(q) scaling obtained from all-metal or carbon dominated machines and the inclusion of spherical tokamaks has no significant influence on the regression parameters. Comparison of the measured lambda(q) with the values expected from a recently published heuristic drift based model shows satisfactory agreement for all tokamaks.

引用

页数：7

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