Journal
NUCLEAR FUSION
Volume 57, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1741-4326/aa5b46
Keywords
divertor concept; plasma-material interactions; advanced tokamak; DIII-D; fusion reactor
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Funding
- General Atomics corporate funding
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SOLPS-EIRENE edge code analysis shows that a gas-tight slot divertor geometry with a small-angle (glancing-incidence) target, named the small angle slot (SAS) divertor, can achieve cold, dissipative/detached divertor conditions at relatively low values of plasma density at the outside midplane separatrix. SAS exhibits the following key features: (1) strong enhancement of the buildup of neutral density in a localized region near the plasma strike point on the divertor target; (2) spreading of the cooling front across the divertor target with the slot gradually flaring out from the strike point, thus effectively reducing both heat flux and erosion on the entire divertor target surface. Such a divertor may potentially provide a power and particle handling solution for long pulse advanced tokamaks.
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