Parametrisation of target heat flux distribution and study of transport parameters for boundary modelling in W7-X

Nuclear Fushion

article

David Bold¹  Felix Reimold¹  Holger Niemann¹  Yu Gao¹  Marcin Jakubowski¹  Carsten Killer¹  Victoria R. Winters¹  the W7-X Team¹ 

[1] Max Planck Institute for Plasma Physics

关键词: island scape-off layer;    Wendelstein 7-X;    EMC3-EIRENE;    divertor heat-flux;   

DOI  :  10.1088/1741-4326/ac7e2f

来源: Institute of Physics Publishing Ltd.

【 摘 要 】

Modelling the scrape-off layer (SOL) of a stellarator is challenging due to the complex magnetic 3D geometry. The here presented study analyses simulations of the SOL of the stellarator Wendelstein 7-X using the EMC3-EIRENE code for the magnetic standard configuration. Comparing with experimental observations, the transport model is validated. Based on the experimentally observed strike line width, the anomalous transport coefficients, used as input to the code are determined to around 0.2 m² s⁻¹. This is however in disagreement with upstream measurements, where such small cross-field transport leads to temperatures higher than measured experimentally.

【 授权许可】

Unknown