Giuseppe Scarantino
Experimental qualification of the first DTT TF superconducting cables in SULTAN.
Rel. Roberto Bonifetto, Andrea Zappatore. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Energetica E Nucleare, 2022
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Abstract
The objective of this work is the experimental qualification of the performance of the first ENEA superconducting (SC) cables for the toroidal-field (TF) coils of the Divertor Tokamak Test (DTT) Facility that is being built in Frascati [1]. Two full-scale, short-length conductor samples with different twist-pitch have been tested from the begin of July 2022 in SULTAN, a test facility operated by EPFL-SPC (Swiss Plasma Center) and located at Paul Scherrer Institute (PSI) in Villigen, Switzerland. In this one-of-a-kind magnetic facility, the superconductors have been tested in a forced flow of supercritical Helium with nominal current and magnetic field up to 11 T.
Before testing, the SC cables made of Nb3Sn were prepared in the facility: they underwent heat-treatment and were assembled and instrumented with high precision thermometers, voltage taps and, in the case of one of the two samples (the TF-B one), also equipped with pressure capillaries to allow a more precise hydraulic characterization
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