Ionization Electron Signal Processing in Single Phase LArTPCs II. Data/Simulation Comparison and Performance in MicroBooNE

TL;DR

This paper demonstrates improved ionization charge extraction in the MicroBooNE single-phase LArTPC using advanced signal processing, validated by data-simulation comparisons and calibration, enhancing the detector's physics analysis capabilities.

Contribution

It introduces a robust signal processing chain for single-phase LArTPCs, validated with MicroBooNE data, and discusses calibration and solutions for detector-specific issues.

Findings

Accurate charge extraction demonstrated on MicroBooNE data.

Agreement between data and simulation for ionization measurements.

Enhanced calorimetry performance across wire planes.

Abstract

The single-phase liquid argon time projection chamber (LArTPC) provides a large amount of detailed information in the form of fine-grained drifted ionization charge from particle traces. To fully utilize this information, the deposited charge must be accurately extracted from the raw digitized waveforms via a robust signal processing chain. Enabled by the ultra-low noise levels associated with cryogenic electronics in the MicroBooNE detector, the precise extraction of ionization charge from the induction wire planes in a single-phase LArTPC is qualitatively demonstrated on MicroBooNE data with event display images, and quantitatively demonstrated via waveform-level and track-level metrics. Improved performance of induction plane calorimetry is demonstrated through the agreement of extracted ionization charge measurements across different wire planes for various event topologies. In addition to the comprehensive waveform-level comparison of data and simulation, a calibration of the cryogenic electronics response is presented and solutions to various MicroBooNE-specific TPC issues are discussed. This work presents an important improvement in LArTPC signal processing, the foundation of reconstruction and therefore physics analyses in MicroBooNE.