The facility consists of two concentric copper cylinders which are temperature controlled by cryocoolers and heaters. The MLI is attached in-between the cylinders by taping each layer to itself. The heat from the warm cylinder flows through the MLI to the cold cylinder and then through a calibrated rod to determine the heat load. The cylinder measures 191 mm in diameter and 1232 mm long. The warm cylinder measures 272 mm in diameter and 1524 mm long.