Development of a 1 to 5 W at 80 K Stirling Pulse Tube Cryocooler

Pulse tube cryocoolers have recently received considerable attention due to their advantages and reliability and to their reduced cold head vibrations compared with other regenerative cryocoolers ( e.g., GM and Stirling cryocoolers ). The pulse tube cryocoolers used in this study are similar to Stirling cryocoolers but they do not require any moving displacer in the cold head. This is beneficial for mechanical simplicity, reliability, reduction of induced vibrations. Performance comparable to Stirling cryocoolers are achievable in terms of cooling power, cooling temperature and efficiency. To cool high-Tc superconductive devices, we have design ed and tested a prototype of Stirling pulse tube cryocooler that has a cooling capacity of 1 to 5W at 80K and a dual-piston linear drive motor compressor.