Abstract
In the field of nuclear fusion, the power exhaust problem is still an open issue and represents one of the biggest problems for the realization of a commercial fusion power plant. According to the “European Fusion Roadmap”, a dedicated facility able to investigate possible solutions to heat exhaust is mandatory. For this purpose, the mission of the Divertor Tokamak Test (DTT) tokamak is the study of different solutions for the divertor. This paper presents the plasma scenarios for standard and alternative configurations in DTT. The Single Null scenario is described in detail. The alternative configurations are also presented, showing the good flexibility of the machine.
Highlights
The flexibility of the Divertor Tokamak Test (DTT) machine allows it to produce a wide range of alternative configurations, which increase divertor radiation without excessive core performance degradation, to study different solutions to the power exhaust problem
The SN plasma scenario has been analyzed in detail, showing the ramp-up, flat-top and ramp-down phases
The ramp-up phase has been optimized with a plasma current rate variation of 200 kA/s reaching the start of the flat-top (SOF) configuration at t = 27 s
Summary
The main goal of nuclear fusion is to generate electric energy, reproducing on earth the nuclear reactions that power the stars. The final aim of the DTT device, whose construction is starting at ENEA C.R. Frascati—Italy, is the test of different solutions for the divertor in view of a DEMOnstration fusion reactor (DEMO), such as alternative plasma configurations and innovative materials for the divertor able to cope with very large power fluxes (>10 MW/m2 ). In 2015, the first proposal of the DTT project was published [2], while in 2019, a revised version was released [3] after a careful revision of the project according to the suggestions of the EUROFUSION consortium. This paper is on the of description of DTT plasma scenarios, showing a revised project according tofocused the suggestions the EUROFUSION consortium.
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