Elena Tamagnini
Study of AC losses in non-insulated REBCO stack and contact electric resistance measurement.
Rel. Laura Savoldi. Politecnico di Torino, Master of science program in Energy And Nuclear Engineering, 2025
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Abstract
In the field of magnetic‐confinement fusion, high‐temperature superconducting (HTS) magnets are attracting increasing attention because of their ability to carry very large currents at cryogenic temperatures. While Cable‐in‐Conduit Conductor (CICC) design has been the standard for toroidal and poloidal field coils in tokamak devices, the central solenoid (CS) must withstand rapidly changing magnetic fields and currents, posing distinct challenges. One promising approach under investigation is the use of non-insulated REBCO tapes to construct the CS, winding HTS tapes directly into coils rather than using traditional CICC cables. These tapes offer enhanced quench protection and improved thermal stability as a result of current sharing between layers.
However, drawbacks include longer coil charging times and increased AC losses
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