Field dependence of electronic recoil signals in a dual-phase liquid xenon time projection chamber

Abstract

We present measurements of light and charge signals in a dual-phase time projection chamber at electric fields varying from 10 V/cm up to 500 V/cm and at zero field using 511 keV gamma rays from a ${}^{22}$Na source. We determine the drift velocity, electron lifetime, diffusion constant, and light and charge yields at 511 keV as a function of the electric field. In addition, we fit the scintillation pulse shape to an effective exponential model, showing a decay time of 43.5 ns at low field that decreases to 25 ns at high fields.

arXiv comment14 pages, 8 figures

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• Prospects of charge signal analyses in liquid xenon TPCs with proportional scintillation in the liquid phase
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• Study of scintillation light collection, production and propagation in a 4 tonne dual-phase LArTPC
• GPU-based optical simulation of the DARWIN detector
• Reduction of ${}^{222}$Rn-induced Backgrounds in a Hermetic Dual-Phase Xenon Time Projection Chamber
• Analysis of ${}^{83m}$Kr Prompt Scintillation Signals in the PIXeY Detector
• Scintillation decay-time constants for alpha particles and electrons in liquid xenon
• Monte Carlo characterization of PETALO, a full-body liquid xenon-based PET detector
• Development of a Monte Carlo tool for simulating electron transport in noble liquids
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• A Comprehensive Monte Carlo Simulation Tool on Electron Transport in Noble Gases and Liquids