High-Precision Alignment Techniques for Realizing an Ultracompact Electromagnetic Calorimeters Using Oriented high-Z Scintillator Crystals

Lorenzo Malagutti; Alessia Selmi; Laura Bandiera; Vladimir Baryshevsky; Luca Bomben; Nicola Canale; Stefano Carsib; Mattia Ciliberti; Davide De Salvadore; Vincenzo Guidi; Viktar Haurylavets; Mikhail Korjik; Giulia Lezzani; Alexander Lobko; Sofia Mangiacavalli; Andrea Mazzolari; Pietro Monti-Guarnieri; Matthew Moulson; Riccardo Negrelloa; Gianfranco Paternò; Leonardo Perna; Christian Petroselli; Michela Prest; Marco Romagnoni; Francesco Sgarbossa; Mattia Soldani; Alexei Sytov; Melissa Tamisari; Victor Tikhomirov; Erik Vallazza; Davide Valzani; Giorgio Zuccalà

doi:10.1016/j.nima.2024.169869

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arXiv · 2503.17053

High-Precision Alignment Techniques for Realizing an Ultracompact Electromagnetic Calorimeters Using Oriented high-Z Scintillator Crystals

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Abstract

Electromagnetic calorimeters used in high-energy physics and astrophysics rely heavily on high-Z inorganic scintillators, such as lead tungstate (PbWO4 or PWO). The crystalline structure and lattice orientation of inorganic scintillators are frequently underestimated in detector design, even though it is known that the crystalline lattice strongly modifies the features of the electromagnetic processes inside the crystal. A novel method has been developed for precisely bonding PWO crystals with aligned atomic planes within 100 {\mu}rad, exploiting X-ray diffraction (XRD) to accurately measure miscut angles. This method demonstrates the possibility to align a layer of crystals along the same crystallographic direction, opening a new technological path towards the development of next-generation electromagnetic calorimeters.

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Lorenzo Malagutti, Alessia Selmi, Laura Bandiera, Vladimir Baryshevsky, Luca Bomben, Nicola Canale, Stefano Carsib, Mattia Ciliberti, Davide De Salvadore, Vincenzo Guidi, Viktar Haurylavets, Mikhail Korjik, Giulia Lezzani, Alexander Lobko, Sofia Mangiacavalli, Andrea Mazzolari, Pietro Monti-Guarnieri, Matthew Moulson, Riccardo Negrelloa, Gianfranco Paternò, Leonardo Perna, Christian Petroselli, Michela Prest, Marco Romagnoni, Francesco Sgarbossa, Mattia Soldani, Alexei Sytov, Melissa Tamisari, Victor Tikhomirov, Erik Vallazza, Davide Valzani, Giorgio Zuccalà. 2025-03-21. High-Precision Alignment Techniques for Realizing an Ultracompact Electromagnetic Calorimeters Using Oriented high-Z Scintillator Crystals. https://doi.org/10.1016/j.nima.2024.169869

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