Signal simulation based on the characteristics of the ν-Angra Experiment’s readout electronics

The Neutrinos Angra (ν-Angra) Experiment has the objective of developing a compact surface detector capable of monitoring the activity of nuclear reactors. The collaboration ν-Angra makes use of the Geant4 package to simulate the interactions occurring inside the detector. The outcome of this Geant4-based software provides time, position and energy of photons that reach the detector sensors; therefore none information about the electrical signal formation is given. In this context, this work proposes a method to simulate the ν-Angra electrical signal coming out from the signal acquisition chain. such chain is composed of a photomultiplier, an amplifier-shaper circuit and an analog-to-digital converter. The characteristics of the proposed method will be described and its performance will be evaluated based on a comparison between its output response and the real signal, experimentally acquired.