Latest advances in barium tagging technology with the NEXT experiment

ORAL

Abstract

NEXT is an experimental program searching for neutrinoless double beta decay (0nuBB) using high-pressure gaseous time projection chamber technology with enriched xenon. The latest experiment in the program, NEXT-100, is currently being constructed at the Laboratorio Subterraneo de Canfranc in the Spanish Pyrenees and will perform a competitive search for 0nuBB utilizing excellent topological reconstruction and energy measurement at 1% FWHM at 2.5 MeV. In order to reach sensitivities towards 1030 years in the 0nuBB half-life, which is several orders of magnitude higher than current best limits, future, larger, detectors will require new methods to reduce the backgrounds to negligible levels, the NEXT collaboration is actively working towards the development of novel technology to tag the barium daughter ion from the decay. If realized, this technique could enable a background-free 0nuBB search. This talk will present the latest advances in barium tagging being developed by the NEXT collaboration.

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Publication: - A Compact Dication Source for Ba2+ Tagging and Heavy Metal Ion Sensor Development (https://arxiv.org/abs/2303.01522)
- Ba2+ ion trapping by organic submonolayer: towards an ultra-low background neutrinoless double beta decay detector (https://arxiv.org/abs/2201.09099)
- The Dynamics of Ions on Phased Radio-frequency Carpets in High Pressure Gases and Application for Barium Tagging in Xenon Gas Time Projection Chambers (NIMA1039 (2022), 167000)
- Barium Selective Chemosensing by Diazacrown Ether Naphthalimide Turn-on Fluorophores for Single Ion Barium Tagging ( ACS Sens. 2021, 6, 1, 192–202 (2021))
- Fluorescent bicolour sensor for low-background neutrinoless double β decay experiments (Nature 583, 48-54 (2020))
- Towards a background-free neutrinoless double beta decay experiment based on a fluorescent bicolor sensor (arXiv:1909.02782)
- Barium Chemosensors with Dry-Phase Fluorescence for Neutrinoless Double Beta Decay (Nature Scientific Reports 9, 15097 (2019))
- Demonstration of Single Barium Ion Sensitivity for Neutrinoless Double Beta Decay using Single Molecule Fluorescence Imaging (Phys.Rev.Lett. 120 (2018) no.13, 132504)
- Mobility and Clustering of Barium Ions and Dications in High Pressure Xenon Gas (Physical Review A 97, 062509 (2018))
- Single Molecule Fluorescence Imaging for Barium Tagging in Neutrinoless Double Beta Decay (Journal of Instrumentation 11 (2016) no.12, P12011)

Presenters

  • Krishan Mistry

    University of Texas at Arlington

Authors

  • Krishan Mistry

    University of Texas at Arlington