Abstract
Design and optimization of pulsed magnets requires development of computer codes that can analyze a multi-coil magnet system magnetically, thermally and mechanically. We present a FORTRAN computer code that can be used to design a multi-circuit pulsed magnet using one or more conductors and reinforcement materials. Xheat is circuit solver that can analyze nonlinear magnetically coupled LR and LRC circuits yielding currents, voltages and temperature distributions in the magnet winding as a function of time. The power source can be one or more of the following: (i) a capacitor bank, (ii) a current source, or (iii) a voltage source. A finite difference technique is used to calculate the properties after a small time step as a function of the temperature at that time. Eddy currents and magnetoresistance are included in resistance calculations. Xheat writes an input file to an elastic and plastic stress calculation codes that can generate stresses, strains and displacement in all magnet layers at the midplane.
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