Speaker
Description
Three quench detection methods are being developed at SPC: (1) resistance measurements of superconducting quench detection (SQD) wires, (2) voltage measurements across series-connected thermocouple wires, and (3) measurements of the spectral shift of light reflected by FBG optical fibers. All three methods primarily respond to temperature rise and are designed to be immune to electromagnetic noise (a challenge for (1) and (2)) and mechanical strain (a challenge for (3)). Here, we will emphasize the specifics of the developed methods, focusing in particular on their integration. Corresponding experimental demonstrations have been carried out in SULTAN on LTS and HTS high-current insert coils, using an identical instrumentation plate that contained approximately ~10 m long detection instruments of each type. We will highlight the key findings from these experiments and outline the next steps in the development, aimed at creating a co-wound instrumentation strip that can be used simultaneously for quench detection, mechanical reinforcement, and turn insulation.
