Helium and current feeder systems of KSTAR

We have estimated the heat load due to an operating sequence and designed a tooling scheme for the coil, structure. and bus-line of the Korea Supercon ducting Tokamak Advanced Research (KSTAR) device cooled by supercritical he lium, We have also estimated the heat load of the current lead cooled by li quid helium, Since the KSTAR will be operated in a pulse mode, the AC loss is dominant in the heat load. The cooling scheme of magnet system is presen ted. Discussion is given for the cooling parameters that consist of tempera ture, press, mass flow rate, etc.