Optimal cooling of HPGe spectrometers for space-born experiments

Abstract We present current results on the theoretical and experimental studies of optimal cryogenic cooling of gamma-ray spectrometers based on high-purity germanium (HPGe) detectors. We show that the technology of cryogenic heat pipe diodes (HPDs) usually allows one to meet cooling requirements with minimal weight, power consumption and cost. Results of computer modeling and laboratory tests of HPDs, Stirling cooler and complete cooling solutions are presented.