Speaker
Description
The SuperNEMO experiment was designed to search for neutrinoless double-beta decay. It is an improved version of a very successful predecessor experiment, NEMO-3. The detector uses a tracker-calorimeter technique to detect individual particles’ trajectories and energies. Energies are measured by a segmented calorimeter composed of polystyrene scintillator blocks.
The calorimeter will be calibrated periodically using an automatic deployment system of 42 $^{207}$Bi calibration sources, which undergo internal conversion emitting electrons of known energies, and automatic calibration software. The aim of the presented work is to study possible effects which can potentially influence the quality and efficiency of the calibration. On their trajectory from the calibration source to the calorimeter the electrons lose energy, causing an artificial shift of the calibration spectrum to lower energies. It is possible to account for these losses by applying a correction. In the study, we also tested several fitting procedures, which could be applied on energy spectrum obtained during calibration and compared them.
The effects were studied using the Monte Carlo simulations of the $^{207}$Bi sources in the detector. In the future, we will use real data to deliver the final automatic calibration script.
