Publication

Snowflake divertor experiments on TCV

Olivier Sauter, Stefano Coda, Basil Duval, Jean-Marc Moret, Benoît Labit, János Márki, Francesco Piras
2010
Conference Papers

Abstract

An ELMy H-mode 'snowflake' (SF) divertor is established and studied for the first time in the TCV tokamak. The H-mode access and the edge localized mode (ELM) dynamics are compared with a conventional single-null diverted configuration. The SF configuration exhibits 15% higher confinement and 2-3 times lower ELM frequency. Ideal MHD stability analysis suggests enhanced stability of the SF H-mode pedestal to mid- to high-toroidal-mode-number modes. The capability of the SF to redistribute the edge power on the additional strike points has been confirmed experimentally.

Official source

https://infoscience.epfl.ch/entities/publication/de5ab617-41b9-40d3-a0c2-20a61e4e71a4

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Snowflake divertor experiments on TCV

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