Processing of the quench detection signals in W7-X

Abstract

The Wendelstein 7-X (W7-X) project uses superconductive coils for generation of the magnetic field to keep the plasma. One of the important safety systems is the protection against quench events. The Quench Detection System of W7-X protects the superconducting coils, the superconducting bus bar sections and the high temperature superconductor of the current leads against the damage because of a quench and against the high stress by a fast discharge of the magnet system.

The quench detection system of Wendelstein 7-X

“…The correlation gives two several status output signals linked to the main magnet power supply, one is "fast discharge" and the other is "slow discharge" [2]. The "discharge logic" was failsafe realized in Boole's algebra using a complex programmable logic device (CPLD) circuit.…”