The Divertor Tokamak Test facility proposal: Physical requirements and reference design

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Abstract

The main goal of the Divertor Tokamak Test facility (DTT) is to explore alternative power exhaust solutions for DEMO. The principal objective is to mitigate the risk of a difficult extrapolation to fusion reactor of the conventional divertor based on detached conditions under test on ITER. The task includes several issues, as: (i) demonstrating a heat exhaust system capable of withstanding the large load of DEMO in case of inadequate radiated power fraction; (ii) closing the gaps in the exhaust area that cannot be addressed by present devices; (iii) demonstrating how the possible implemented solutions (e.g., advanced divertor configurations or liquid metals) can be integrated in a DEMO device. In view of these goals, the basic physical DTT parameters have been selected according to the following guidelines: (i) edge conditions as close as possible to DEMO in terms of dimensionless parameters; (ii) flexibility to test a wide set of divertor concepts and techniques; (iii) compatibility with bulk plasma performance; (iv) an upper bound of 500 M€ for the investment costs.

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APA

Crisanti, F., Albanese, R., Granucci, G., Martone, R., Sonato, P., Affinito, L., … Zagórski, R. (2017). The Divertor Tokamak Test facility proposal: Physical requirements and reference design. Nuclear Materials and Energy, 12, 1330–1335. https://doi.org/10.1016/j.nme.2017.05.008

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