Laboratoire des 2 infinis in Bordeaux, France
Monday, September 26, 2022
The SuperNEMO experiment will study 82Se to look for neutrinoless double beta decays, proof of the Majorana nature of neutrinos. SuperNEMO inherits the tracking-calorimetry technique of the NEMO-3 experiment, allowing for a clear determination of event kinematics, single electrons energy measurement and angles of emission, gamma coïncidence catching, while aiming for an improved background suppression. A demonstrator module is currently starting operation. The double beta emitting source, 7 kg of 82Se in thin foils, is surrounded by a 0.5 meter long helium tracking chamber with 2000 Geiger cells. A 4pi gamma catcher and electron calorimeter, made of plastic scintillators with an energy resolution of 7.8% (FWHM) at 1 MeV, surrounds the tracker. The ultra low radioactivity demonstrator is constructed and installed in the Modane Underground Laboratory in the Frejus Tunnel under the French–Italian Alps.
J. Pedro Ochoa-Ricoux