Patent ID: 7140190
Filing Date: 2006-11-28
Classification: F17C,F25B,F25D,G01R,H01F

Abstract:
1. A cryogenic chamber comprising: an outer vacuum vessel; an inner cryogen vessel; a turret housing a neck tube that provides external access to the inner cryogen vessel; and a pulse tube refrigerator which includes at least one pulse tube and at least one regenerator tube; wherein, the pulse tube refrigerator is located within a vacuum contained between the outer vacuum vessel and the inner cryogen vessel; the pulse tube refrigerator and the neck tube share a single turret; at least one cooling stage of the pulse tube refrigerator is rigidly mechanically connected to the neck tube by highly conductive thermal links; and the at least one pulse tube and the at least one regenerator tube are displaced away from the neck tube and from each other.