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Expérience SuperNEMO pour la recherche de la double désintégration bêta sans émission de neutrino : conception et réalisation du système de déclenchement du module démonstrateur

Abstract : The SuperNEMO experiment is designed for the neutrinoless double beta decay (ββ) research involving a massive Majorana neutrino (ν ≡ ν̄). The demonstrator module of the experiment is currently being installed at the Laboratoire Souterrain de Modane (LSM). The so-called tracko-calo detection technique allows the energy measurement of the particles passing through the detector and a complete reconstruction of their kinematics.This thesis presents the design, simulation and implementation of the electronics trigger system for the SuperNEMO demonstrator module. The purpose of this system is to maximize the detection efficiency for ββ events as well as for background events due to natural radioactivity while reducing the acquisition rate caused by spurious events. Pattern recognition and calorimeter-tracker association algorithms have been developed and implemented in electronic boards after validation by Monte-Carlo simulations. The performance targets have been reached, taking into account different constraints (physics of the detectors, electronics, real time) with maximized detection efficiency for events of interest.
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  • HAL Id : tel-02092007, version 2

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Guillaume Oliviero. Expérience SuperNEMO pour la recherche de la double désintégration bêta sans émission de neutrino : conception et réalisation du système de déclenchement du module démonstrateur. Autre [cond-mat.other]. Normandie Université, 2018. Français. ⟨NNT : 2018NORMC236⟩. ⟨tel-02092007v2⟩

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