Conveners
Fri-Mo-Or6 - Quench Detection and Protection I
- Joshua Feldman (University of Illinois at Urbana-Champaign)
- Maxim Marchevsky (LBNL)
A new quench protection technique, Energy Shift with Coupling (ESC), has recently been proposed, which is very promising for the protection of high-field magnets. The ESC system includes normal-conducting coils that are highly magnetically coupled to, but galvanically insulated from, the magnet coils. When the system is activated, rapid shift of energy from the magnet to the ESC coils is...
Conductors and magnets for fusion applications based on High Temperature Superconducting (HTS) materials are currently being designed and tested. Quench propagation in such conductors is an open issue due to the small normal zone propagation velocity when compared to Low Temperature Superconductors. This, in turn, makes the quench detection and the protection of HTS magnets more challenging....
Proper detection and localization of quench events is essential to protect superconducting magnets for particle accelerators. Voltage taps are widely adopted for low-temperature superconductors (LTS), but they do not ensure reliable quench detection for high temperature superconducting (HTS) magnets. Indeed, the propagation velocity of the normal conducting zone is in the order of m s−1 for...
A quench detection and fast discharge scheme has been deployed in the Superconducting Magnet Test Facility at MIT's Plasma Science and Fusion Center for use with high-temperature superconductor (HTS) devices. In particular, the system was developed to protect the SPARC Central Solenoid Model Coil (CSMC), an insulated HTS cable magnet constructed of 40 turns of PIT VIPER cable, as well as the...
The design and simulation of a modified Rayleigh Line Pulse Forming Network (PFN) is presented for active quench protection of superconducting magnets. In this context, the PFN is a network of capacitors and inductors designed to deliver energy to quench heaters over a significantly longer period than a single capacitor or capacitor bank. The PFN is advantageous for protection of coils...
