Divertorlets concept for low-recycling fusion reactor divertor: experimental, analytical and numerical verification

The 'divertorlets' concept is a potential non-evaporative liquid metal solution for heat removal at low recycling regime. A toroidal divertorlets prototype was built and tested in LMX-U at Princeton Plasma Physics Laboratory to evaluate the performance of this configuration. In this paper, details of the design, experimental results, comparison with analytical theory and MHD numerical simulations of toroidal divertorlets are covered. Experiments, analytical model and simulations showed agreement and allowed the projection of operation properties at higher magnetic flux densities (reactor-like operation), proving the concept to be a compelling solution for divertor applications.

Automated summary

The 'divertorlets' concept is a potential solution for heat removal at low recycling regime in the form of non-evaporative liquid metal. A toroidal divertorlets prototype was built and tested to evaluate its performance, and the results were compared with analytical theory and MHD numerical simulations. The experiments, analytical model, and simulations showed agreement, demonstrating the concept's feasibility for divertor applications at higher magnetic flux densities.