The SuperNEMO neutrinoless double beta decay experiment

Topical Research Meeting: Prospects in Neutrino Physics

Vilela, Cristovao^1

Department of Physics and Astronomy, University College London, Gower Street, London

WC1E 6BT, United Kingdom^1

关键词: Background discrimination;    Construction phase;    Lepton number;    Neutrinoless double-beta decays;    Region of interest;    The standard model;    Tracking detectors;    University of Manchester;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/598/1/012034/pdf
DOI  :  10.1088/1742-6596/598/1/012034

来源: IOP

【 摘 要 】

SuperNEMO is an experiment currently in the construction phase with the aim of searching for neutrinoless double beta decay, a beyond the standard model lepton number violating process. It employs the same strategy as its predecessor NEMO-3, with a tracker and calorimeter surrounding a thin foil of source isotope. Twenty modules are planned, yielding 100 kg of82Se as source, with a sensitivity to a half-life of 1026years. The first module is intended to demonstrate the very stringent radiopurity requirements, with no background counts being expected in the region of interest of the decay for 2.5 years of data taking. It will hold 7 kg of82Se, giving it a sensitivity to a half-life of 6.5 × 1024years. The tracking detector is essential for background discrimination and its construction and commissioning are being undertaken in the U.K., primarily at UCL, MSSL (UCL) and The University of Manchester.