The quench module of the ROXIE field computation program has been presented at previous conferences. In this paper we discuss recently implemented features that allow quench simulation of fast-ramping superconducting magnets. As the reliability of quench detection during the ramps depends on the signal to noise ratio, we simulate the influence of detection thresholds and the propagation of undetected quenches during the ramps. We also study the effect of an increased copper content and the feasibility of a self-protected magnet surviving a powering cycle with an undetected quench and without quench heater firing or energy-extraction system.
free text keywords: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Accelerators and Storage Rings, Computing and Computers, Nuclear engineering, Superconducting magnet, Quenching, Materials science, Power electronics, Increased copper, Heating element, Computation, Magnet, Signal-to-noise ratio