Calibration of the charge and energy loss per unit length of the MicroBooNE liquid argon time projection chamber using muons and protons
Name
1907.11736.pdf
Description
Accepted version
Size
3.12 MB
Format
Unknown
Checksum (MD5)
682687911706dbcc472b9dbec9ba7b22
Author(s)
Ashkenazi, Adi
Carr, Rachel
Conrad, Janet M.
Diaz, Alejandro
Hen, Or
Hourlier, Adrien C.
Moon, Jarrett S.
Papadopoulou, Afroditi
Yates, Lauren Elizabeth
Date Issued
2020
Journal
Journal of Instrumentation
Publisher
IOP Publishing
Version
Author's final manuscript
Abstract
© 2020 IOP Publishing Ltd and Sissa Medialab. We describe a method used to calibrate the position- and time-dependent response of the MicroBooNE liquid argon time projection chamber anode wires to ionization particle energy loss. The method makes use of crossing cosmic-ray muons to partially correct anode wire signals for multiple effects as a function of time and position, including cross-connected TPC wires, space charge effects, electron attachment to impurities, diffusion, and recombination. The overall energy scale is then determined using fully-contained beam-induced muons originating and stopping in the active region of the detector. Using this method, we obtain an absolute energy scale uncertainty of 2% in data. We use stopping protons to further refine the relation between the measured charge and the energy loss for highly-ionizing particles. This data-driven detector calibration improves both the measurement of total deposited energy and particle identification based on energy loss per unit length as a function of residual range. As an example, the proton selection efficiency is increased by 2% after detector calibration.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1088/1748-0221/15/03/P03022
