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Développement de compteurs à scintillation hautes performances et de très basse radioactivité pour le calorimètre du projet SuperNEMO

Chauveau Emmanuel 1
1 NEMO - Neutrino et Faibles Radioactivités
CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
Abstract : SuperNEMO is a next generation double beta decay experiment which will extend the successful "tracko-calo" technique employed in NEMO 3. The main characteristic of this type of detector is to identify not only double beta decays, but also to mesure its own background components. The projet aims to reach a sensitivity up to 1026 years on the half-life of 82Se. One of the main challenge of the Research and Development is to achieve an unprecedented energy resolution for the electron calorimeter, better than 8 % FWHM at 1 MeV. This thesis contributes to improve scintillators and photomultiplicators performances and reduce their radioactivity, including in particular the development of a new photomultiplier in collaboration with Photonis.
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Chauveau Emmanuel. Développement de compteurs à scintillation hautes performances et de très basse radioactivité pour le calorimètre du projet SuperNEMO. Physique Nucléaire Expérimentale [nucl-ex]. Université de Bordeaux1, 2010. Français. ⟨tel-00659065⟩

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