A High Performance Insulated REBCO Pancake With Conductive Cooling Capability

REBCO Coated Conductors have high tensile strength along their length. They are however sensitive to delamination when traction force is applied on the tape surface, which in a pancake winding corresponds radial stress. For this reason, most magnets dry-wound (not impregnated). One of drawbacks dry that conduction cooling low temperature (below 20 K) would be inefficient. Edge impregnation structures were developed mitigate problem but retaining soft non-stick insulating layer between turn. In paper, we propose an improved structure with benefits edge-impregnation using Hastelloy thin insulation coating reinforce winding. The mechanical behavior such first estimated then validated current tests under large background magnetic field. performance tested by rapid ramping and fast discharge.