Calibration of the AMIGA ADC channel with T3 shower events

ANA MARTINA BOTTI; FEDERICO SÁNCHEZ; DIEGO RAVIGNANI; ALEJANDRO ALMELA; MARÍA BELÉN ANDRADA; ALBERTO ETCHEGOYEN; JUAN MANUEL FIGUEIRA; ALAN FUSTER; BEATRIZ GARCÍA; FLAVIA GESUALDI; NICOLÁS GONZÁLEZ; MATÍAS ROLF HAMPEL; JOHANNES HULSMAN; AGUSTÍN LUCERO; DIEGO MELO; SARAH MÜLLER; MATIAS PERLIN; MANUEL PLATINO; MATÍAS RONCORONI; CHRISTIAN SARMIENTO-CANO; MARINA SCORNAVACCHE; GAIA SILLI; ÁLVARO TABOADA; BRIAN WUNDHEILER

Otro; Pierre Auger Collaboration internal note; 2019

In this GAP note, AMIGA ADC and binary traces are analyzed to obtain an offline calibration of the ADC channels and to study the performance of the underground muon detector in the field. First of all, an uncertainty model for the ADC channels is presented, in which the charge fluctuation is the main contribution to the resolution. We demonstrate that for even low particle densities the ADC charge behaves linear to the number of muons reconstructed with the binary traces in terms of mean values. A general overview of the results obtained in the station with ID 1764 is discussed and a test to verify the calibration consistency is presented. Finally, a preliminary analysis of the detector uncertainties is discussed. For N = 1 the integrator resolution is ∼20% higher than an ideal Poissonian detector.