SECONDARY PULSE TUBES AND REGENERATORS FOR COUPLING TO ROOM TEMPERATURE PHASE SHIFTERS IN MULTISTAGE PULSE TUBE CRYOCOOLERS

摘要

Pulse tube refrigeration or cooling systems are described which utilize a secondary regenerator or a secondary pulse tube. Use of such a secondary regenerator or pulse tube enables a commercially available pressure oscillator to be incorporated in the cooling system. The commercially available oscillator can be operated at room temperature or approximately so.