A snowflake divertor: a possible solution to the power exhaust problem for tokamaks
This paper summarizes recent progress in the theory of a snowflake divertor, a possible path to reduce both steady-state and intermittent heat loads on the divertor plates to an acceptable level. The most important feature of a SF divertor is the presence of a large zone of a very weak poloidal magn...
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| Veröffentlicht in: | Plasma physics and controlled fusion 2012-12, Vol.54 (12), p.124050 |
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| container_title | Plasma physics and controlled fusion |
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| creator | Ryutov, D D Cohen, R H Rognlien, T D Umansky, M V |
| description | This paper summarizes recent progress in the theory of a snowflake divertor, a possible path to reduce both steady-state and intermittent heat loads on the divertor plates to an acceptable level. The most important feature of a SF divertor is the presence of a large zone of a very weak poloidal magnetic field around the poloidal field (PF) null. Qualitative explanation of a variety of new features characteristic of a SF divertor is provided based on simple scaling relations. The main part of the paper is focused on the concept of spreading of the heat flux by curvature-driven convection near the PF null. References to experimental results from the NSTX and TCV tokamaks are provided. |
| doi_str_mv | 10.1088/0741-3335/54/12/124050 |
| format | Article |
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| issn | 0741-3335 1361-6587 |
| language | eng |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | 70 PLASMA PHYSICS AND FUSION GENERAL STUDIES OF NUCLEAR REACTORS |
| title | A snowflake divertor: a possible solution to the power exhaust problem for tokamaks |
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