QUENCH SIMULATION AND THERMAL-DIFFUSION IN EPOXY-IMPREGNATED MAGNET SYSTEM

We have developed a new computer code that addresses quench simulation and analysis of magnetically coupled epoxy-impregnated magnet system. The new computer code contains several new provisions: 1- it includes the effect of AC loss from the field variations in the winding due to field change because of the fast current transfer between the magneti cally coupled solenoids; 2-simultaneous solution of the propagation ve locities in all directions in each coil by solving the thermal diffusi on equation in the three directions (tangential, radial and axial). In addition to the above new features, the code solves for the currents, voltage, temperature distribution, and resistance of each coil as fun ction of time. Thermal simulation of the protection switch and the que nching heaters is part of the new code.