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Surface-sensitive macrobolometers for the identification of external charged particles
- Publication Year :
- 2009
-
Abstract
- We report the performance of two prototype TeO2 macrobolometers, operated at ~25 mK, able to identify events due to energy deposited at the detector surface. This capability is obtained by thermally coupling thin Ge active layers to the main energy absorber of the bolometer, and is demonstrated by irradiating the detectors with alpha particles. The temperature variations of the main absorber and of the active layer are measured independently with doped Ge thermistors. These results show clearly that an intrinsic limitation of monolithic low temperature calorimeters, e.g., the impossibility to give information about event position, can be efficiently overcome using composite structures.
- Subjects :
- Physics
Coupling
Physics and Astronomy (miscellaneous)
business.industry
Physics::Instrumentation and Detectors
Thermistor
Bolometer
Detector
Doping
FOS: Physical sciences
Alpha particle
Charged particle
law.invention
Active layer
law
Optoelectronics
Nuclear Experiment (nucl-ex)
business
Nuclear Experiment
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....bb2678e91b04158b41c4b7971c02f47f