Development of cryogenic low background detector based on enriched zinc molybdate crystal scintillators to search for neutrinoless double beta decay of ¹⁰⁰Mo
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90027%2F15%3A00344270" target="_blank" >RIV/68407700:90027/15:00344270 - isvavai.cz</a>
Result on the web
<a href="http://theses.fr/2015PA112143" target="_blank" >http://theses.fr/2015PA112143</a>
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Development of cryogenic low background detector based on enriched zinc molybdate crystal scintillators to search for neutrinoless double beta decay of ¹⁰⁰Mo
Original language description
Observation of neutrinoless double beta (0ν2β) decay would imply the violation of lepton number conservation and definitely new physics beyond the Standard Model, establishing the Majorana nature of neutrinos. Cryogenic scintillating bolometers look the most promising detectors to search for this extremely rare nuclear process in a few theoretically the most favorable nuclei.ZnMoO₄ scintillators with a mass of ~ 0.3 kg, as well as Zn¹⁰⁰ MoO₄ crystals enriched in the isotope ¹⁰⁰Mo were produced for the first time by using the low-thermal-gradient Czochralski technique. The optical and luminescent properties of the produced crystals were studied to estimate the progress in crystal growth quality. The low-temperature tests with a 313 g ZnMoO₄ scintillator and two enriched Zn¹⁰⁰ MoO₄ were performed aboveground in the Centre de Sciences Nucléaires et de Sciences de la Matière. The low background measurements with a three ZnMoO₄ and two enriched detectors installed in the EDELWEISS set-up at the Laboratoire Souterrain de Modane were carried out.To optimize the light collection in ZnMoO₄ cryogenic scintillating bolometers, we have simulated the collection of scintillation photons in a detector module for different geometries by Monte Carlo method using the GEANT4 package. Response to the 2ν2β decay of ¹⁰⁰Mo was simulated for the enriched Zn¹⁰⁰ MoO₄ detectors of different shape and mass to understand the dependence of 2ν2β decay spectra on crystal shape. ...
Czech name
—
Czech description
—
Classification
Type
O - Miscellaneous
CEP classification
—
OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
—
Continuities
—
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů