A hardware implementation of Region-of-Interest selection in LAr-TPC for data reduction and triggering

TL;DR

This paper presents a hardware implementation for Region-of-Interest selection in Liquid Argon TPC detectors, achieving significant data reduction and enabling low-energy event triggering through an efficient on-line identification algorithm tested on a real detector.

Contribution

It introduces a novel hardware-based ROI selection and trigger system for LAr-TPCs, improving data throughput and low-energy event detection capabilities.

Findings

Achieved nearly 4x data reduction with lossless compression.

Successfully implemented and tested on ICARINO LAr-TPC.

Demonstrated trigger capability for events as low as 1 MeV.

Abstract

Large Liquid Argon TPC detectors in the range of multikton mass for neutrino and astroparticle physics require the extraction and treatment of signals from some 105 wires. In order to enlarge the throughtput of the DAQ system an on-line lossless data compression has been realized reducing almost a factor 4 the data flow. Moreover a trigger system based on a new efficient on-line identification algorithm of wire hits was studied, implemented on the actual ICARUS digital read- out boards and fully tested on the ICARINO LAr-TPC facility operated at LNL INFN Laboratory with cosmic-rays. Capability to trigger isolated low energy events down to 1 MeV visible energy was also demonstrated.