On the role of filaments in perpendicular heat transport at the scrape-off layer

被引：47

作者：

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

Artene, S. ^{[1
]}

Bernert, M. ^{[1
]}

Birkenmeier, G. ^{[1
]}

Faitsch, M. ^{[1
]}

Manz, P. ^{[1
,3
]}

de Marne, P. ^{[1
]}

Stroth, U. ^{[1
]}

Wischmeier, M. ^{[1
]}

Wolfrum, E. ^{[1
]}

机构：

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

[2] CIEMAT, Lab Nacl Fus, Av Complutense 40, E-28040 Madrid, Spain

[3] Tech Univ Munich, Phys Dept E28, Garching, Germany

来源：

NUCLEAR FUSION | 2018年 / 58卷 / 09期

关键词：

tokamak; SOL; filaments; heat fluxes; PLASMA; EDGE; SOL; FLUCTUATIONS; TURBULENCE; PARTICLE; PROBES;

D O I：

10.1088/1741-4326/aacb04

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 this work we carry out quantitative measurements of particle and heat transport associated to SOL filaments in a tokamak, and relate density shoulder formation to the advection of energy in the far SOL. For the first time, this attempt includes direct measurements of ion and electron temperatures for background and filaments. With this aim, we combine data from a number of equivalent L-mode discharges from the ASDRX Upgrade tokamak in which different probe heads were installed on the midplane manipulator. This approach is validated by a comparison with independent diagnostics. Results indicate an increase of heat transport associated to filaments after the shoulder formation. Several centimeters into the SOL, filaments arc still found to carry a substantial fraction (up to one fifth) of the power ejected at the separatrix.

引用

页数：13

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