The Fast Stochastic Matching Pursuit for Neutrino and Dark Matter Experiments

Abstract

Photomultiplier tubes (PMTs) are widely deployed at neutrino and dark matter experiments for photon counting. When multiple photons hit a PMT consecutively, their photo-electron (PE) pulses pile up to hinder the precise measurements of the count and timings. We introduce Fast Stochastic Matching Pursuit (FSMP) to analyze the PMT signal waveforms into individual PEs with the strategy of reversible-jump Markov-chain Monte Carlo. We demonstrate that FSMP improves the energy and time resolution of PMT-based experiments and gains acceleration on GPUs. It is suitable for dynode PMTs, and is extensible to microchannel-plate (MCP) PMTs. In the condition of our laboratory characterization of 8-inch MCP-PMTs, FSMP improves the energy resolution by up to 10% from the conventional method of waveform integration.

References in corpus (14)

• Array Programming with NumPy
• A Review of Basic Energy Reconstruction Techniques in Liquid Xenon and Argon Detectors for Dark Matter and Neutrino Physics Using NEST
• Separating Double-Beta Decay Events from Solar Neutrino Interactions in a Kiloton-Scale Liquid Scintillator Detector By Fast Timing
• Large photocathode 20-inch PMT testing methods for the JUNO experiment
• Prediction of Energy Resolution in the JUNO Experiment
• Improving Photoelectron Counting and Particle Identification in Scintillation Detectors with Bayesian Techniques
• Readout electronics and data acquisition system of PandaX-4T experiment
• Reconstruction Algorithm for a Novel Cherenkov Scintillation Detector
• Towards the ultimate PMT waveform analysis for neutrino and dark matter experiments
• KamNet: An Integrated Spatiotemporal Deep Neural Network for Rare Event Search in KamLAND-Zen
• Performance evaluation of the 8-inch MCP-PMT for Jinping Neutrino Experiment
• Single electron charge spectra of 8-inch high-collection-efficiency MCP-PMTs
• The JUNO experiment and its electronics readout system
• First-principle event reconstruction by time-charge readouts for the Taishan Antineutrino Observatory