Contribution Poster accelerator
Calibrating a Liquid Argon Detector using Stopping Muons
on behalf of the DUNE collaboration
Session and Location
Wednesday Session, Poster Wall #49 (Auditorium Gallery Right)
ProtoDUNE-SP is a single phase Liquid Argon Time Projection Chamber (LArTPC) which is under construction at CERN and is expected to be operational in August 2018. Its main goals are the design validation and the response calibration of the full size DUNE far detector components exploiting cosmic ray data and test-beam data of different particles of known energy and type. The high rate of cosmic ray interactions in this surface detector allows for calibrations of energy scale by using stopping muons and their decay (Michel) electrons. This poster presents a preliminary analysis of cathode-crossing $t_0$-tagged stopping cosmic muons in protoDUNE-SP using simulated data; these events allow for conversion of charge deposition, $dQ/dx$, to energy deposition, $dE/dx$, using the known Bragg curve of the muon. A Michel electron event selection is also presented; 98% purity and 2.4% efficiency are achieved by clustering hits which are tagged as Michel-like by a Convolutional Neural Network.
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