Design and performance of a high-pressure xenon gas TPC as a prototype for a large-scale neutrinoless double-beta decay search

Abstract

A high-pressure xenon gas time projection chamber, with a unique cellular readout structure based on electroluminescence, has been developed for a large-scale neutrinoless double-beta decay search. In order to evaluate the detector performance and validate its design, a 180~L size prototype is being constructed and its commissioning with partial detector has been performed. The obtained energy resolution at 4.0~bar is 1.73 $\pm$ 0.07% (FWHM) at 511 keV. The energy resolution at the ${}^{136}$Xe neutrinoless double-beta decay Q-value is estimated to be between 0.79 and 1.52% (FWHM) by extrapolation. Reconstructed event topologies show patterns peculiar to track end-point which can be used to distinguish $0\nu \beta \beta$ signals from gamma-ray backgrounds.

arXiv comment24 pages, 25 figures, 1 table. Preprint paper for PTEP

References in corpus (14)

• Search for Majorana Neutrinos near the Inverted Mass Hierarchy Region with KamLAND-Zen
• Background rejection in NEXT using deep neural networks
• Secondary Scintillation Yield in Pure Xenon
• Initial results of NEXT-DEMO, a large-scale prototype of the NEXT-100 experiment
• Reflectance of Polytetrafluoroethylene (PTFE) for Xenon Scintillation Light
• Ionization and scintillation response of high-pressure xenon gas to alpha particles
• Operation and first results of the NEXT-DEMO prototype using a silicon photomultiplier tracking array
• Signal-background discrimination with convolutional neural networks in the PandaX-III experiment using MC simulation
• Electroluminescence collection cell as a readout for a high energy resolution Xenon gas TPC
• Neutrinoless Double Beta Decay with ${}^{82}$SeF${}_6$ and Direct Ion Imaging
• Initial results on energy resolution of the NEXT-White detector
• An improved measurement of electron-ion recombination in high-pressure xenon gas
• AXEL: High-pressure Xe gas TPC for BG-free $0\nu 2\beta$ decay search
• Angular dependence of columnar recombination in high pressure xenon gas using time profile of scintillation emission

Cited by in corpus (2)

• In-situ high voltage generation with Cockcroft-Walton multiplier for xenon gas time projection chamber
• High-pressure xenon gas time projection chamber with scalable design and its performance at around the Q value of ${}^{136}$Xe double-beta decay