Application of large area SiPMs for the readout of a plastic scintillator based timing detector

TL;DR

This paper investigates the use of large-area SiPM arrays coupled with plastic scintillators for high-precision timing in particle detectors, demonstrating potential for sub-100 ps resolution in large-scale applications.

Contribution

It introduces a novel SiPM readout system with an ASIC for improved timing performance in large scintillator detectors.

Findings

Achieved timing resolution below 100 ps with large-area SiPMs

Demonstrated effective readout of long plastic scintillator bars

Showed feasibility for large-scale particle physics timing applications

Abstract

In this study an array of eight 6 mm x 6 mm area SiPMs was coupled to the end of a long plastic scintillator counter which was exposed to a 2.5 GeV/c muon beam at the CERN PS. Timing characteristics of bars with dimensions 150 cm x 6 cm x 1 cm and 120 cm x 11 cm x 2.5 cm have been studied. An 8-channel SiPM anode readout ASIC (MUSIC R1) based on a novel low input impedance current conveyor has been used to read out and amplify SiPMs independently and sum the signals at the end. Prospects for applications in large-scale particle physics detectors with timing resolution below 100 ps are provided in light of the results.