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Fluorescence Imaging of Individual Ions and Molecules in Pressurized Noble Gases for Barium Tagging in Xe
NEXT Collaboration, N. Byrnes, E. Dey +112
The imaging of individual Ba ions in high pressure xenon gas is one possible way to attain background-free sensitivity to neutrinoless double beta decay and hence establish…
Design, characterization and installation of the NEXT-100 cathode and electroluminescence regions
NEXT Collaboration, K. Mistry, L. Rogers +107
NEXT-100 is currently being constructed at the Laboratorio Subterráneo de Canfranc in the Spanish Pyrenees and will search for neutrinoless double beta decay using a high-pressure…
A Compact Dication Source for Ba Tagging and Heavy Metal Ion Sensor Development
K. E. Navarro, B. J. P. Jones, J. Baeza-Rubio +107
We present a tunable metal ion beam that delivers controllable ion currents in the picoamp range for testing of dry-phase ion sensors. Ion beams are formed by sequential atomic eva…
Reflectance and fluorescence characteristics of PTFE coated with TPB at visible, UV, and VUV as a function of thickness
J. Haefner, A. Fahs, J. Ho +100
Polytetrafluoroethylene (PTFE) is an excellent diffuse reflector widely used in light collection systems for particle physics experiments. In noble element systems, it is often coa…
The CYGNO Experiment
Fernando Domingues Amaro, Elisabetta Baracchini, Luigi Benussi +47
The search for a novel technology able to detect and reconstruct nuclear and electron recoil events with the energy of a few keV has become more and more important now that large r…
Boosting background suppression in the NEXT experiment through Richardson-Lucy deconvolution
A. Simón, Y. Ifergan, A. B. Redwine +100
Next-generation neutrinoless double beta decay experiments aim for half-life sensitivities of ~ yr, requiring suppressing backgrounds to <1 count/tonne/yr. For this, any e…
Sensitivity of a tonne-scale NEXT detector for neutrinoless double beta decay searches
NEXT Collaboration, C. Adams, V. Álvarez +96
The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double-beta decay of Xe-136 using high-pressure xenon gas TPCs with electroluminescent amplification.…
Demonstration of Single Barium Ion Sensitivity for Neutrinoless Double Beta Decay using Single Molecule Fluorescence Imaging
A. D. McDonald, B. J. P. Jones, D. R. Nygren +71
A new method to tag the barium daughter in the double beta decay of Xe is reported. Using the technique of single molecule fluorescent imaging (SMFI), individual barium dic…
Helium-Xenon mixtures to improve topological signature in high pressure gas Xenon TPCs
R. Felkai, F. Monrabal, D. Gonzalez-Díaz +72
Within the framework of xenon-based double beta decay experiments, we propose the possibility to improve the background rejection of an electroluminescent Time Projection Chamber (…
Microscopic simulation of xenon-based optical TPCs in the presence of molecular additives
C. D. R. Azevedo, D. Gonzalez-Diaz, S. F. Biagi +67
We introduce a simulation framework for the transport of high and low energy electrons in xenon-based gaseous optical time projection chambers (OTPCs). The simulation relies on ele…
Secondary scintillation yield of Xenon with sub-percent levels of CO2 additive: efficiently reducing electron diffusion in HPXe optical TPCs for rare-event detection
C. A. O. Henriques, E. D. C. Freitas, C. D. R. Azevedo +67
We have measured the electroluminescence (EL) yield of Xe-CO2 mixtures, with sub-percent CO2 concentrations. We demonstrate that the EL production is still high in these mixtures,…
Background rejection in NEXT using deep neural networks
NEXT Collaboration, J. Renner, A. Farbin +64
We investigate the potential of using deep learning techniques to reject background events in searches for neutrinoless double beta decay with high pressure xenon time projection c…
In-beam evaluation of a medium-size Resistive-Plate WELL gaseous particle detector
L. Moleri, F. D. Amaro, L. Arazi +10
In-beam evaluation of a fully-equipped medium-size 3030 cm Resistive Plate WELL (RPWELL) detector is presented. It consists here of a single element gas-avalanche multi…
An homeopathic cure to pure Xenon large diffusion
C. D. R. Azevedo, L. M. P. Fernandes, E. D. C. Freitas +6
The NEXT neutrinoless double beta decay experiment will use a high- pressure gas electroluminescence-based TPC to search for the decay of Xe-136. One of the main advantages of this…
Sensitivity of NEXT-100 to neutrinoless double beta decay
NEXT Collaboration, J. Martín-Albo, J. Muñoz Vidal +60
NEXT-100 is an electroluminescent high-pressure xenon gas time projection chamber that will search for the neutrinoless double beta () decay of Xe-136. The detector possesse…
First in-beam studies of a Resistive-Plate WELL gaseous multiplier
S. Bressler, L. Moleri, M. Pitt +10
We present the results of the first in-beam studies of a medium size (1010 cm) Resistive-Plate WELL (RPWELL): a single-sided THGEM coupled to a pad anode through a resi…
First results of a large-area cryogenic gaseous photomultiplier coupled to a dual-phase liquid xenon TPC
L. Arazi, A. E. C. Coimbra, E. Erdal +6
We discuss recent advances in the development of cryogenic gaseous photomultipliers (GPM), for possible use in dark matter and other rare-event searches using noble-liquid targets.…
First proof of topological signature in the high pressure xenon gas TPC with electroluminescence amplification for the NEXT experiment
NEXT Collaboration, P. Ferrario, A. Laing +67
The NEXT experiment aims to observe the neutrinoless double beta decay of xenon in a high-pressure Xe136 gas TPC using electroluminescence (EL) to amplify the signal from ionizatio…
Radon and material radiopurity assessment for the NEXT double beta decay experiment
S. Cebrián, J. Pérez, I. Bandac +67
The Neutrino Experiment with a Xenon TPC (NEXT), intended to investigate the neutrinoless double beta decay using a high-pressure xenon gas TPC filled with Xe enriched in 136Xe at…
Accurate gamma and MeV-electron track reconstruction with an ultra-low diffusion Xenon/TMA TPC at 10 atmospheres
Diego Gonzalez-Diaz, V. Alvarez, F. I. G. Borges +80
We report the performance of a 10 atm Xenon/trimethylamine time projection chamber (TPC) for the detection of X-rays (30 keV) and gamma-rays (0.511-1.275 MeV) in conjunction with t…
An improved measurement of electron-ion recombination in high-pressure xenon gas
NEXT Collaboration, L. Serra, M. Sorel +64
We report on results obtained with the NEXT-DEMO prototype of the NEXT-100 high-pressure xenon gas time projection chamber (TPC), exposed to an alpha decay calibration source. Comp…
The NEXT experiment
Juan Jose Gomez-Cadenas
NEXT (Neutrino Experiment with a Xenon TPC) is an experiment to search neutrinoless double beta decay processes (bb0nu) in Xe136. The NEXT technology is based in the use of time pr…
Results of the material screening program of the NEXT experiment
T. Dafni, V. Alvarez, I. Bandac +67
The 'Neutrino Experiment with a Xenon TPC (NEXT)', intended to investigate neutrinoless double beta decay, requires extremely low background levels. An extensive material screening…
Radiopurity assessment of the tracking readout for the NEXT double beta decay experiment
S. Cebrián, J. Pérez, I. Bandac +68
The Neutrino Experiment with a Xenon Time-Projection Chamber (NEXT) is intended to investigate the neutrinoless double beta decay of 136Xe, which requires a severe suppression of p…