Speaker
Annie Hughes
(Commonwealth Fusion Systems)
Description
The SPARC tokamak developed by Commonwealth Fusion Systems (CFS) and the Massachusetts Institute of Technology Plasma Science and Fusion Center (MIT PSCFC) uses pulsed high temperature superconductor (HTS) magnets with composite insulation. Each of the SPARC insulated magnets is to be acceptance tested to 21 kV in Paschen minimum conditions, and any failures are to be repaired before installation of the magnet into SPARC. To qualify the insulation breakout schemes and the insulation layup proposed for SPARC, the Central Solenoid Model Coil (CSMC), which was manufactured and tested in 2024, was “Paschenized” and Paschen-tested to 21 kV in a 0.01 mbar to 1 bar pressure range. We present the process, lessons learned, and results.
Author
Annie Hughes
(Commonwealth Fusion Systems)
Co-authors
Charlie Sanabria
(Commonwealth Fusion Systems)
Philip Michael
(MIT PSFC)
Theodore Golfinopoulos
(MIT PSFC)
