Influence of the Dynamic Ergodic Divertor on the heat deposition pattern in TEXTOR at different collisionalities

Autor:	M W Jakubowski, M Lehnen, K H Finken, O Schmitz, S S Abdullaev, B Unterberg, R C Wolf, the TEXTOR team
Rok vydání:	2007
Předmět:	Toroid Nuclear Energy and Engineering Heat flux Physics::Plasma Physics Field line Divertor Electron temperature Plasma Collisionality Atomic physics Condensed Matter Physics Computational physics Magnetic field
Zdroj:	Plasma Physics and Controlled Fusion. 49:S109-S121
ISSN:	1361-6587 0741-3335
DOI:	10.1088/0741-3335/49/7/s08
Popis:	The Dynamic Ergodic Divertor on TEXTOR imposes three-dimensional stochastic magnetic field lines in the plasma boundary. The resulting heat deposition patterns on the divertor surface depend strongly on a magnetic topology, including radial penetration of magnetic field lines within the first few toroidal revolutions. The influence of the collisionality in the plasma edge is of importance for the resulting deposition patterns. The heat flux formed by the electrons streaming along the field lines with shallow penetration is only seen at low collisionalities, while these field lines reach areas of low electron temperature. The other class of field lines penetrates relatively deep within the first few toroidal turns reaching the plasma region with much higher electron temperature, which makes parallel transport much more effective, even at the higher level of collisionality.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2e4e9903b272b05a23f71550a4f37cf2 https://doi.org/10.1088/0741-3335/49/7/s08 Zobrazit plný text záznamu