ZE3RA: The ZEPLIN-III Reduction and Analysis Package

Abstract

ZE3RA is the software package responsible for processing the raw data from the ZEPLIN-III dark matter experiment and its reduction into a set of parameters used in all subsequent analyses. The detector is a liquid xenon time projection chamber with scintillation and electroluminescence signals read out by an array of 31 photomultipliers. The dual range 62-channel data stream is optimised for the detection of scintillation pulses down to a single photoelectron and of ionisation signals as small as those produced by single electrons. We discuss in particular several strategies related to data filtering, pulse finding and pulse clustering which are tuned to recover the best electron/nuclear recoil discrimination near the detection threshold, where most dark matter elastic scattering signatures are expected. The software was designed assuming only minimal knowledge of the physics underlying the detection principle, allowing an unbiased analysis of the experimental results and easy extension to other detectors with similar requirements.

References in corpus (5)

• Results from the First Science Run of the ZEPLIN-III Dark Matter Search Experiment
• The ZEPLIN-III dark matter detector: instrument design, manufacture and commissioning
• Limits on the spin-dependent WIMP-nucleon cross-sections from the first science run of the ZEPLIN-III experiment
• The ZEPLIN-III dark matter detector: performance study using an end-to-end simulation tool
• The ZEPLIN II dark matter detector: data acquisition system and data reduction

Cited by in corpus (10)

• WIMP-nucleon cross-section results from the second science run of ZEPLIN-III
• Position Reconstruction in a Dual Phase Xenon Scintillation Detector
• Single electron emission in two-phase xenon with application to the detection of coherent neutrino-nucleus scattering
• Response of photomultiplier tubes to xenon scintillation light
• Measurement and simulation of the muon-induced neutron yield in lead
• Quenching Factor for Low Energy Nuclear Recoils in a Plastic Scintillator
• Study and mitigation of spurious electron emission from cathodic wires in noble liquid time projection chambers
• High Voltage in Noble Liquids for High Energy Physics
• Measurement of Beam-Correlated Background Neutrons from the Fermilab Booster Neutrino Beam in ANNIE Phase-I
• Performance data from the ZEPLIN-III second science run