SHE3D-a code for the three dimension steady-state helium-cooled CICC conductors

The superconducting magnets needed for the next generation of fusion tokamaks such as ITER and TPX must operate under steady-state conditions. The conductors are wound in pancakes and several pancakes are usually required for each winding pack. Supercritical helium is used to cool the conductors, and carry away the heat from such sources as neutrons and eddy currents. The analysis of the steady-state heat removal is very important in the magnet design. A code, SHE3D (steady-state helium-cooled conductor in 3D), has been developed for this purpose. This code includes the turn-to-turn and pancake-to-pancake heat conduction for steady-state conditions. The entire winding pack can be treated for a self-consistent study that includes several flow channels, different heat loads in each channel, and different magnetic fields (which impacts the critical current). Typical results for TPX toroidal field coil cooling are presented.<>