Speakers
Description
The SNO+ experiment is a multipurpose neutrino detector located 2 km underground at SNOLAB in Sudbury, Ontario. The primary goal of the experiment is to search for neutrinoless double beta $(0\nu\beta\beta)$ decay in liquid scintillator loaded with $^{130}$Te in a low-background environment. An observation of a $0\nu\beta\beta$ decay signal would demonstrate the Majorana nature of neutrinos. In order to resolve such a rare decay process, a precise optical calibration of the SNO+ detector is critical. This work presents a sensitive method of investigating the attenuation parameters in liquid scintillator by modelling the simulated radial light yield profiles of various internal background sources. The scintillator materials utilized in the SNO+ Monte Carlo (MC) simulation framework have been fine-tuned based on ex-situ measurements of the light yield and comparison to detector data.
