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Methods for quench localisation and performance diagnostics of Nb3Sn magnets in SM18
Description
Abstract:
In the development of Superconducting Magnets the feedback from cold powering tests can have a major impact on its design and production process. In the last years many Nb3Sn magnets have been tested at the SM18 superconducting magnet test facility, ranging from short model race tracks (SMC and RMC) to short model quadrupoles (MQXFS), short model and full length prototype dipoles (11T) and a world record dipole (FRESCA2).
This seminar is split in two closely linked topics: first the baseline of instrumentation and diagnostics for quench localisation and quench characterisation is shown and discussed. Second, the performance limits of Nb3Sn magnets are discussed, using the interpretation of “circumstantial” evidence (ramp rate dependency, temperature dependency, holding current quenches, etc..) and more direct evidence (like V-I measurements). To improve understanding and trigger some discussion example cases from magnet tests in the past years will be shown and discussed.
The main goals of the seminar are to reach more consensus on 1) the interpretation of test results and 2) to reach more consensus on how optimize the process of “trouble shooting” when a magnet is underperforming during cold powering tests.
The agenda of this meeting is empty