I. Introduction
Superconducting power cable terminations act as an interface between the cable and the grid and manage the thermal gradient from the cryogenic to the ambient temperature components such as copper cables, power transformers, circuit breakers, disconnect switches, etc. The high temperatures surrounding these terminations, cause substantial heat influx into the superconducting cable. A cryogenic heat sink cooled by helium gas is designed and optimized here to maintain the superconducting cable within operating range.