Improved Heat and Particle Flux Mitigation in High Core Confinement, Baffled, Alternate Divertor Configurations in the TCV tokamak

Abstract

Nitrogen seeded detachment has been achieved in the Tokamak a Configuration Variable (TCV) in advanced divertor configurations (ADCs), namely X-divertor and X-point target, with and without baffles in H-mode plasmas with high core confinement. Both ADCs show a remarkable reduction in the inter-ELM particle and heat fluxes to the target compared to the standard divertor configuration. 95-98% of the peak heat flux to the target is mitigated as a synergetic effect of ADCs, baffling, and nitrogen seeded detachment. The effect of divertor geometry and baffles on core-divertor compatibility is investigated in detail. The power balance in these experiments is also investigated to explore the physics behind the observed reduction in heat fluxes in the ADCs.

Cited by in corpus (5)

• Investigating the impact of the molecular charge-exchange rate on detached SOLPS-ITER simulations
• Divertor shaping with neutral baffling as a solution to the tokamak power exhaust challenge
• Power exhaust and core-divertor compatibility of the baffled snowflake divertor in TCV
• Performance assessment of a tightly baffled, long-legged divertor configuration in TCV with SOLPS-ITER
• Investigating the influence of divertor baffles on nitrogen-seeded detachment in TCV with SOLPS-ITER simulations and TCV experiments