The CRESST dark matter experiment: status and perspectives
NUCL INSTRUM METH A 444:1-2 (2000) 312-314
Abstract:
The CRESST experiment in its first phase is using sapphire detectors with tungsten phase transition thermometers to search for dark matter WIMPs. At present Four 262 g detectors are performing first measurements under low background conditions. Detector performance as well as preliminary results from the background runs are presented. A second phase of CRESST using CaWO4 and simultaneous measurement of phonons and scintillation light is in preparation. (C) 2000 Elsevier Science B.V. All rights reserved.CRESST dark matter experiment: Status and perspectives
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 444:1 (2000) 312-314
Abstract:
The CRESST experiment in its first phase is using sapphire detectors with tungsten phase transition thermometers to search for dark matter WIMPs. At present four 262 g detectors are performing first measurements under low background conditions. Detector performance as well as preliminary results from the background runs are presented. A second phase of CRESST using CaWO4 and simultaneous measurement of phonons and scintillation light is in preparation.Imaging X-ray spectroscopy with superconducting phase transition thermometers
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 444:1 (2000) 208-210
Abstract:
The development of an imaging cryogenic X-ray spectrometer based upon X-ray absorption in sapphire and readout by two tungsten superconducting phase transition thermometers (SPT) is reported. The resistance changes of the SPTs are measured by a superconducting quantum interference device (SQUID) readout system and eventually result in electrical signals which are proportional to the energies carried into the SPTs through phonons. 1D imaging over an absorber length of 10 mm with a position resolution of ≈20 μm was achieved.Quasiparticle diffusion and edge losses in superconducting tunnel junction detectors with two active electrodes
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 444:1 (2000) 15-18
Abstract:
A theoretical model to describe the spectral response of SIS tunnel junctions under irradiation in the presence of diffusion and edge losses of non-equilibrium quasiparticles has been developed. The model takes into account the back-tunnelling effect, in the general case of asymmetrical rates of tunnelling, γ12≠γ21. It provides a quantitative estimate of parameters like the edge reflectivity, the diffusion length and the diffusion coefficient, which are important parameters for a diagnostic of STJ-detectors. The predictions of the theory are compared with an experimental spectrum obtained from a Nb-based STJ.Research of superconducting tunnel junction X-ray detectors with direct signal observation method using a fast current readout system
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 444:1 (2000) 124-128