Pablo Kunze – Phd’s defense – oct. 14, 2023

Neutrinos oscillations are a vast research field, exciting and challenging. The DUNE project, taking place in the USA and plan to start in 2027, is one of the future long baseline neutrinos oscillations experiment from accelerator, in the same way as Tokaï to Hyper-Kamiokande. The main goals of the DUNE experiment are to find the mass hierarchy and the CP asymmetry in the neutrino sector. In this experiment, there will also be the possibility of Supernova neutrinos detection and the search for proton decay with a good sensibility. To achieve these scientific goals, a highly intense neutrino beam will be produced at the proton accelerator at FermiLab and a far detector will be placed at 1300 km from the beam production. The far detector will be made of four modules consisting of liquid Argon time projection chambers (LArTPC) of 17.5 kt of liquid Argon each. LArTPC prototypes have been built at CERN with two different technologies, single phase and dual phase. This thesis will focus on the dual phase prototypes, the WA105 demonstrator and ProtoDUNE Dual Phase. On the WA105 demonstrator, I studied the scintillation light propagation and on ProtoDUNE DP, I worked on the charge signal created by energy loss of cosmic muons in the detector.