Patent ID: 7137274
Filing Date: 2006-11-21
Classification: B82Y,F25J,G03F,H05G

Abstract:
1. A system for producing a flow of liquid or solid xenon in an evacuated chamber comprising: means for pressuring and cooling a gaseous flow of xenon to a pressure and a temperature so that upon entering the evacuated chamber, the gaseous xenon liquefies or solidifies within the chamber; pump means for drawing the flow of gaseous xenon from the chamber to the pressurising and cooling means; and means for returning the pressurised and cooled gaseous xenon to the chamber wherein the pressuring and cooling means comprises a housing extending about a duct having an inlet for receiving the pressurised gaseous flow and an outlet for returning the flow to the chamber, the housing containing at least one coolant for cooling the flow and wherein the housing contains a first coolant in thermal contact with the duct and means extending about the duct for conveying a flow of second coolant within the housing for controlling the temperature of the first coolant.