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Improvement in Ge Detector Cooling
CANBERRA INDUSTRIES MERIDEN CT
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High purity germanium HPGe detector cooling technology used in remote radionuclide assay applications, such as the Radionuclide Aerosol SamplerAnalyzer RASA Mark IV, is continually evolving. Cryocooler improvements in recent years have resulted in reduced size, reduced maintenance, improved reliability, and enhanced HPGe detector performance compared to systems based on earlier generations of cooling devices. The Cryo-Cycletrademark and Cryo-Pulse 5 are two such HPGe detector coolercryostat systems that we are modifying and evaluating for use in the RASA. The modifications will enhance vacuum lifetime and integrity, improve performance, and resolve the need to procure and handle liquid nitrogen LN2. Both cryocoolers offer advantages over the existing generation of HPGe detector coolercryostats used in the RASA and other remote-sensing applications.
APPROVED FOR PUBLIC RELEASE