Study of scintillation light collection, production and propagation in a 4 tonne dual-phase LArTPC

TL;DR

This paper investigates how scintillation light is produced, collected, and propagates in a 4-tonne dual-phase liquid argon TPC, enhancing understanding of detector performance for particle physics experiments.

Contribution

It provides a detailed analysis of scintillation light processes and compares experimental data with simulations, improving knowledge of liquid argon properties in dual-phase TPCs.

Findings

Photon detection efficiency characterized.

Scintillation and electroluminescence signals studied.

Comparison with simulations improved understanding.

Abstract

The $3 \times 1 \times 1$ m$^3$ demonstrator is a dual phase liquid argon time projection chamber that has recorded cosmic rays events in 2017 at CERN. The light signal in these detectors is crucial to provide precise timing capabilities. The performances of the photon detection system, composed of five PMTs, are discussed. The collected scintillation and electroluminescence light created by passing particles has been studied in various detector conditions. In particular, the scintillation light production and propagation processes have been analyzed and compared to simulations, improving the understanding of some liquid argon properties.