Performance study of a $3\times1\times1\mbox{ m}^3$ dual phase liquid Argon Time Projection Chamber exposed to cosmic rays

TL;DR

This paper presents a detailed analysis of a 3x1x1 m^3 dual-phase liquid argon TPC's response to cosmic rays, focusing on detector performance, electron extraction, amplification, and stability, crucial for future detector development.

Contribution

It provides the first comprehensive performance evaluation of a large-scale dual-phase liquid argon TPC with detailed insights into electron extraction and amplification processes.

Findings

Successful electron extraction from liquid to gas phase

Stable charge amplification across the readout plane

High detector purity and consistent gain stability

Abstract

We report the results of the analyses of the cosmic ray data collected with a 4 tonne (3$\times$1$\times$1~m$^3$) active mass (volume) Liquid Argon Time-Projection Chamber (TPC) operated in a dual-phase mode. We present a detailed study of the TPC's response, its main detector parameters and performance. The results are important for the understanding and further developments of the dual-phase technology, thanks to the verification of key aspects, such as the extraction of electrons from liquid to gas and their amplification through the entire one square metre readout plain, gain stability, purity and charge sharing between readout views.