Effects of misalignment on response uniformity of SiPM-on-tile technology for highly granular calorimeters

Abstract

The SiPM-on-tile technology, consisting of plastic scintillator tiles with typical sizes of a few cm${}^2$ mounted on top of SiPMs, has been developed within the CALICE collaboration to enable automatized mass production of active elements for scintillator-based highly granular calorimeters. We present a study of the impact of misalignment of the scintillator tile with respect to the photon sensor on the response uniformity and on the absolute light yield for square, hexagonal and rhomboidal scintillator tiles of different sizes. A misalignment results in the formation of a dipole asymmetry of the spatial distribution of the light yield, with a magnitude that scales linearly with the size of the displacement, while the average light yield over the full active area of the tile is not affected. These results provide guidance for the definition of tolerances for the production and assembly of large calorimeter systems, showing that an alignment precision of approximately 500 $\mu$m or better allows to limit the impact to acceptable levels.

arXiv comment15 pages, 11 figures, 2 tables, v3 version published in JINST

References in corpus (3)

• A highly granular SiPM-on-tile calorimeter prototype
• Uniformity Studies of Scintillator Tiles directly coupled to SiPMs for Imaging Calorimetry
• A highly granular calorimeter concept for long baseline near detectors

Cited by in corpus (7)

• A high-granularity calorimeter insert based on SiPM-on-tile technology at the future Electron-Ion Collider
• Test Beam Study of SiPM-on-Tile Configurations
• Studies of time resolution, light yield, and crosstalk using SiPM-on-tile calorimetry for the future Electron-Ion Collider
• Beam Test of the First Prototype of SiPM-on-Tile Calorimeter Insert for the Electron-Ion Collider Using 4 GeV Positrons at Jefferson Laboratory
• Leveraging Staggered Tessellation for Enhanced Spatial Resolution in High-Granularity Calorimeters
• First-Ever Deployment of a SiPM-on-Tile Calorimeter in a Collider: A Parasitic Test with 200 GeV $pp$ Collisions at RHIC
• Timing performance of SiPM-on-Tile elements: Laboratory and test beam measurements