Three Computer Codes for Safety and Stability of Large Superconducting Magnets

Abstract

For analyzing the safety and stability of large superconducting magnets, three computer codes TASS, SHORTURN, and SSICC have been developed, applicable to bath-cooled magnets, bath-cooled magnets with shorted turns, and magnets with internally cooled conductors respectively. The TASS code is described, and the use of the three codes is reviewed.

Superconducting coils quench simulation, the Wilson's method revisited

“…So the speed has to be chosen such that it is always in the direction of the gradient . This yields to the equation of motion of the normal zone (5) Putting this in a more general framework the previous equation is a Hamilton-Jacobi equation (6) where the Hamiltonian is: (7) and the initial condition is:…”

“…Historically the Wilson's QUENCH [1] program was the first published code allowing quench simulation of a superconducting coil on a computer. Despite its simplicity, this approach gives globally correct results [3]- [5]. Another approach is to treat the coil as a anisotropic solid and solve the nonlinear heat equation governing the quench process with methods like the finite-element method.…”