Inter-ELM Power Decay Length for JET and ASDEX Upgrade: Measurement and Comparison with Heuristic Drift-Based Model

被引：395

作者：

Eich, T. ^{[1
,4
]}

Sieglin, B. ^{[1
,4
]}

Scarabosio, A. ^{[1
,4
]}

Fundamenski, W. ^{[2
,4
]}

Goldston, R. J. ^{[3
]}

Herrmann, A. ^{[1
]}

机构：

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

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

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

[4] JET EFDA, Culham Sci Ctr, Culham OX14 3DB, England

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 21期

关键词：

DIVERTOR; DISCHARGES; PROFILES;

D O I：

10.1103/PhysRevLett.107.215001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Experimental measurements of the SOL power decay length (lambda(q)) estimated from analysis of fully attached divertor heat load profiles from two tokamaks, JET and ASDEX Upgrade, are presented. Data was measured by means of infrared thermography. An empirical scaling reveals parametric dependency lambda(q) in mm = 0.73B(T)(-0.78)q(cyl)(1.2)P(SOL)(0.1)R(geo)(0), where B(T)(T) describes the toroidal magnetic field, q(cyl) the cylindrical safety factor, P(SOL)(MW) the power crossing the separatrix and R(geo)(m) the major radius of the device. A comparison of these measurements to a heuristic particle drift-based model shows satisfactory agreement in both absolute magnitude and scaling. Extrapolation to ITER gives lambda(q) similar or equal to 1 mm.

引用

页数：4