QUENCH SIMULATION USING A RING-TYPE DEFECT MODEL

A 2-dimensional ring-type defect thermal feedback model has been improved by including magnetic field en- hancement at the pit edge. Latest simulation results show that there is a thermally stable state below the quench field with part of the edge becoming normal conducting, which can explain the preheating observed in thermometry mea- surements at fields below quench. 3D magnetic field en- hancement calculations of pit structures where done using the Omega3P code to obtain realistic values for the mag- netic field enhancement at typical pit dimensions.