SIS100 HTS local current leads. Cryogenic performance.

In SIS100 accelerator cryostat system the major reduction of the heat load via more than 500 local current leads 250A will be done by use of the HTS materials. Modern 2G HTS tapes provide low thermal conductivity and high current density with heat-sink at the temperature below 70K. For FAIR project at GSI we developed a new heat-sink technique on the base of special epoxy. Cryogenic performance of the local current leads heat-sink was tested at 4K and 60K. Test data and analysis are provided.