Logo image
Event Reconstruction in a Liquid Xenon Time Projection Chamber with an Optically-Open Field Cage
Journal article   Open access

Event Reconstruction in a Liquid Xenon Time Projection Chamber with an Optically-Open Field Cage

T Stiegler, S Sangiorgio, J. P Brodsky, M Heffner, S. Al Kharusi, G Anton, I. J Arnquist, I Badhrees, P. S Barbeau, D Beck, …
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, v 1000(na), p165239
21 Sep 2020
url
https://doi.org/10.1016/j.nima.2021.165239View
Accepted (AM)Open Access (Publisher-Specific) Open

Abstract

Physics - Instrumentation and Detectors
Nuclear Inst. and Methods in Physics Research, A 1000 (2021) 165239 nEXO is a proposed tonne-scale neutrinoless double beta decay ($0\nu\beta\beta$) experiment using liquid ^{136}Xe$ (LXe) in a Time Projection Chamber (TPC) to read out ionization and scintillation signals. Between the field cage and the LXe vessel, a layer of LXe ("skin" LXe) is present, where no ionization signal is collected. Only scintillation photons are detected, owing to the lack of optical barrier around the field cage. In this work, we show that the light originating in the skin LXe region can be used to improve background discrimination by 5% over previous published estimates. This improvement comes from two elements. First, a fraction of the $\gamma$-ray background is removed by identifying light from interactions with an energy deposition in the skin LXe. Second, background from ^{222}Rn$ dissolved in the skin LXe can be efficiently rejected by tagging the $\alpha$ decay in the ^{214}Bi-{}^{214}Po$ chain in the skin LXe.

Metrics

18 Record Views
5 citations in Scopus

Details

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Collaboration types
Industry collaboration
Domestic collaboration
International collaboration
Web of Science research areas
Instruments & Instrumentation
Nuclear Science & Technology
Physics, Nuclear
Physics, Particles & Fields
Logo image