Abstract
Thorough modeling of the physics involved in liquid argon calorimetry is essential for accurately predicting the performance of DUNE and optimizing its design and analysis pipeline. At the fundamental level, it is essential to quantify the detector response to individual hadrons---protons, charged pions, and neutrons---at different injection energies. We report such a simulation, analyzed under different assumptions about event reconstruction, such as particle identification and neutron detection. The role of event containment is also quantified. The results of this simulation can help inform the ProtoDUNE test-beam data analysis, while also providing a framework for assessing the impact of various cross section uncertainties.
Highlights
Energy resolution and the accuracy of energy scale calibration are essential characteristics for a neutrino detector operating in a broad-spectrum neutrino beam
Having an accurate model for the detector response to each particle type is essential for optimal detector performance
An example study following this approach is presented in Ref. [2], where we considered several model assumptions about the detector performance, on the values of particle detection thresholds and the availability of accurate particle identification (PID) information
Summary
Energy resolution and the accuracy of energy scale calibration are essential characteristics for a neutrino detector operating in a broad-spectrum neutrino beam. Modeling these characteristics for the Deep Underground Neutrino Experiment (DUNE) is a nontrivial task. At the root of the problem is the nature of the final states produced when neutrinos of several-GeV energies interact with argon nuclei. These interactions can produce multiple hadrons of different types, which can, in turn, undergo subsequent interactions in the detector medium, distributing energy among even more particles. Having an accurate model for the detector response to each particle type is essential for optimal detector performance
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