Abstract
The X-point radiator (XPR) is an attractive scenario that may contribute to solving the power exhaust problem in future fusion devices. The 2D transport code SOLPS-ITER was applied to reproduce the experimentally measured plasma condition with an XPR in the ASDEX Upgrade tokamak and to compare with a reduced model. Neutrals penetrating from the adjoining cold divertor region and the large connection length near the X-point play an important role in initiating an XPR. However, once such a radiator is created, it persists even if the fueling and impurity seeding rates were reduced. The redistribution of plasma density and radiation near the X-point caused by fluid drifts at the XPR was studied in the simulation.
Original language | English |
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Article number | 016001 |
Journal | Nuclear Fusion |
Volume | 63 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2023 |
Keywords
- SOLPS-ITER
- X-point radiator
- power exhaust