Abstract
The DiMES materials probe exposed tungsten blocks with 0.3 and 1 mm high leading edges to DIII-D He plasmas in 2015 and 2016 viewed with high resolution IRTV. The 1-mm edge may have reached >3000 °C in a 3-s shot with a (parallel) heat load of ∼80 MW/m2 and ∼8.6 MW/m2 on the surface based on modeling. The experiments support ITER. Leading edges were also a concern in the DIII-D Metal Tile Experiment in 2016. Two toroidal arrays of divertor tiles had W-coated molybdenum inserts 50 mm wide radially. This paper presents data and thermal analyses.
Original language | English |
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Pages (from-to) | 271-275 |
Number of pages | 5 |
Journal | Fusion Engineering and Design |
Volume | 124 |
DOIs | |
State | Published - Nov 2017 |
Keywords
- DIII-D
- High heat flux
- Plasma facing component
- Plasma surface interaction
- Power handling
- Tungsten