Particle identification with a longitudinally segmented homogeneous calorimeter composed of oriented crystals
arxiv(2024)
摘要
Recent studies have shown that the electromagnetic shower induced by a
high-energy electron, positron or photon incident along the axis of an oriented
crystal in Strong Field regime is significantly accelerated. Since the hadronic
interactions are not affected by the lattice orientation, a calorimeter
composed of oriented crystals could exploit the increased difference between
the electromagnetic and hadronic showers to perform particle identification,
achieving a better accuracy than a calorimeter composed only of non-aligned
crystals. In this work, we report the first quantitative evaluation of the
particle identification capability of such a calorimeter, focusing on the case
of neutron-gamma discrimination. We demonstrate through Geant4 simulations that
the use of oriented crystals significantly improves the performance of a Random
Forest classifier trained on the detector data. This work is a proof that
oriented calorimeters could be a viable option for future high-intensity
particle physics experiments and satellite-based gamma-ray telescopes.
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