209 research outputs found
320 g ionization-heat bolometers design for the EDELWEISS experiment
No full textTo achieve a high level of discrimination between nuclear recoils and radioactive background, a new in size 320 g ionization–heat bolometer has been designed and realized for the EDELWEISS experiment. With this new device we are expecting a great improvement in background limitation in particular for betas and low-energy X- and γ-rays. Sensitivities to Luke effect and infrared source are also discussed
Physical interpretation of the Neganov–Luke and related effects
No full textThe Neganov–Luke effect consists mainly of the enhancement of heat deposited by an ionizing particle in a bolometer at low temperatures, when the induced charges are collected by an applied voltage. The paper will present a detailed explanation of this phenemenon and its magnitude
Cryogenic ge detectors with interleaved electrodes: Design and modeling
No full textDetectors fitted with interleaved collection electrodes offer a promising solution to the problem of surface event rejection in cryogenic Ge detectors for dark matter search. Detector design and modeling are discussed, based on computer simulations of the collection field and on pulse-shape analysis of the ionization signals. Test experiments with a prototype detector are presented in a companion paper by X. Defay et al. in this conference
Erratum to: “Ionization measurement at very low temperature for nuclear and electron recoils discrimination by ionization-heat simultaneous measurement for dark matter research” [Nucl. Instr. and Meth. A 442 (2000) 267–274]
No full textIonization measurement at very low temperature for nuclear and electron recoils discrimination by ionization-heat simultaneous measurement for dark matter research
No full textA Low Background Setup for Low Energy X-ray Detection in the Context of the BabyIAXO/IAXO Axion Searches
No full textIn the context of axion search in the BabyIAXO and IAXO helioscopes, various types of cryogenic detectors are investigated as high energy resolution, low energy threshold alternatives for the standard micromegas X-ray detectors. The setup presented in this paper comprising metallic magnetic calorimeter (MMC) X-ray detectors, a cryogenic local muon veto read out by an MMC, and internal and external lead shields, aims at establishing the background level that can be reached with MMCs in an above-ground experimental site. The low background setup is described in detail, and first observations from a low-temperature run are presented
Development of X-ray silicon microcalorimeters
No full textX-ray microcalorimeter arrays are well suited to address key problems in high-energy astrophysics; this microcalorimeter uses thermometers based on technology IDT (Implanted Diffused Thermometer) implemented in silicon-on-insulator (SOI) wafers. This work presents our results on the test (measurements) of the thermometer prototype
320g ionization heat cryogenic detector for dark matter search in the EDELWEISS experiment
No full textManoi
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