Publications (27)
NEXT-CRAB-0: A High Pressure Gaseous Xenon Time Projection Chamber with a Direct VUV Camera Based Readout
NEXT Collaboration, N. K. Byrnes, I. Parmaksiz +116
The search for neutrinoless double beta decay () remains one of the most compelling experimental avenues for the discovery in the neutrino sector. Electroluminescent gas-p…
Calibration of the NEXT-White detector using decays
G. MartÃnez-Lema, J. A. Hernando Morata, B. Palmeiro +74
The NEXT-White (NEW) detector is currently the largest radio-pure high-pressure xenon gas time projection chamber with electroluminescent readout in the world. NEXT-White has been…
Sensitivity of the NEXT experiment to Xe-124 double electron capture
G. MartÃnez-Lema, M. MartÃnez-Vara, M. Sorel +88
Double electron capture by proton-rich nuclei is a second-order nuclear process analogous to double beta decay. Despite their similarities, the decay signature is quite different,…
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…
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…
Neutral Bremsstrahlung emission in xenon unveiled
C. A. O. Henriques, P. Amedo, J. M. R. Teixeira +90
We present evidence of non-excimer-based secondary scintillation in gaseous xenon, obtained using both the NEXT-White TPC and a dedicated setup. Detailed comparison with first-prin…
Radiogenic backgrounds in the NEXT double beta decay experiment
NEXT Collaboration, P. Novella, B. Palmeiro +88
Natural radioactivity represents one of the main backgrounds in the search for neutrinoless double beta decay. Within the NEXT physics program, the radioactivity-induced background…
Electroluminescence TPCs at the thermal diffusion limit
C. A. O. Henriques, C. M. B. Monteiro, D. González-DÃaz +78
The NEXT experiment aims at searching for the hypothetical neutrinoless double-beta decay from the Xe isotope using a high-purity xenon TPC. Efficient discrimination of t…
Electron drift properties in high pressure gaseous xenon
NEXT Collaboration, A. Simón, R. Felkai +73
Gaseous time projection chambers (TPC) are a very attractive detector technology for particle tracking. Characterization of both drift velocity and diffusion is of great importance…
The Dynamics of Ions on Phased Radio-frequency Carpets in High Pressure Gases and Application for Barium Tagging in Xenon Gas Time Projection Chambers
NEXT Collaboration, B. J. P. Jones, A. Raymond +107
Radio-frequency (RF) carpets with ultra-fine pitches are examined for ion transport in gases at atmospheric pressures and above. We develop new analytic and computational methods f…
Sensitivity of a tonne-scale NEXT detector for neutrinoless double beta decay searches
NEXT Collaboration, C. Adams, V. Ãlvarez +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 background rejection using deep convolutional neural networks in the NEXT experiment
NEXT Collaboration, M. Kekic, C. Adams +88
Convolutional neural networks (CNNs) are widely used state-of-the-art computer vision tools that are becoming increasingly popular in high energy physics. In this paper, we attempt…
Demonstration of Event Position Reconstruction based on Diffusion in the NEXT-White Detector
J. Haefner, K. E. Navarro, R. Guenette +108
Noble element time projection chambers are a leading technology for rare event detection in physics, such as for dark matter and neutrinoless double beta decay searches. Time proje…
Mitigation of Backgrounds from Cosmogenic Xe in Xenon Gas Experiments using He Neutron Capture
L. Rogers, B. J. P. Jones, A. Laing +89
\Xe{136} is used as the target medium for many experiments searching for \bbnonu. Despite underground operation, cosmic muons that reach the laboratory can produce spallation neutr…
Energy calibration of the NEXT-White detector with 1% resolution near Q of Xe
J. Renner, G. DÃaz López, P. Ferrario +87
Excellent energy resolution is one of the primary advantages of electroluminescent high pressure xenon TPCs, and searches for rare physics events such as neutrinoless double-beta d…
SEAL: Common Core Libraries and Services for LHC Applications
J. Generowicz, P. Mato, L. Moneta +3
The CERN LHC experiments have begun the LHC Computing Grid project in 2001. One of the project's aims is to develop common software infrastructure based on a development vision sha…
Demonstration of the event identification capabilities of the NEXT-White detector
NEXT Collaboration, P. Ferrario, J. M. Benlloch-RodrÃguez +88
In experiments searching for neutrinoless double-beta decay, the possibility of identifying the two emitted electrons is a powerful tool in rejecting background events and therefor…
Electron Drift and Longitudinal Diffusion in High Pressure Xenon-Helium Gas Mixtures
A. D. McDonald, K. Woodruff, B. Al Atoum +83
We report new measurements of the drift velocity and longitudinal diffusion coefficients of electrons in pure xenon gas and in xenon-helium gas mixtures at 1-9 bar and electric fie…
Ba ion trapping by organic submonolayer: towards an ultra-low background neutrinoless double beta decay detector
P. Herrero-Gómez, J. P. Calupitan, M. Ilyn +112
If neutrinos are their own antiparticles, the otherwise-forbidden nuclear reaction known as neutrinoless double beta decay () can occur, with a characteristic lifetime whi…
Demonstration of neutrinoless double beta decay searches in gaseous xenon with NEXT
NEXT Collaboration, P. Novella, M. Sorel +112
The NEXT experiment aims at the sensitive search of the neutrinoless double beta decay in Xe, using high-pressure gas electroluminescent time projection chambers. The NEXT-…
Radio Frequency and DC High Voltage Breakdown of High Pressure Helium, Argon, and Xenon
K. Woodruff, J. Baeza-Rubio, D. Huerta +91
Motivated by the possibility of guiding daughter ions from double beta decay events to single-ion sensors for barium tagging, the NEXT collaboration is developing a program of R&D…
Low-diffusion Xe-He gas mixtures for rare-event detection: Electroluminescence Yield
A. F. M. Fernandes, C. A. O. Henriques, R. D. P. Mano +88
High pressure xenon Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification are being proposed for rare event detection such as d…
Measurement of radon-induced backgrounds in the NEXT double beta decay experiment
NEXT Collaboration, P. Novella, B. Palmeiro +79
The measurement of the internal Rn activity in the NEXT-White detector during the so-called Run-II period with Xe-depleted xenon is discussed in detail, together wi…
Monte Carlo characterization of PETALO, a full-body liquid xenon-based PET detector
J. Renner, C. Romo-Luque, R. J. Aliaga +24
New detector approaches in Positron Emission Tomography imaging will play an important role in reducing costs, lowering administered radiation doses, and improving overall performa…
Measurement of the Xe two-neutrino double beta decay half-life via direct background subtraction in NEXT
NEXT Collaboration, P. Novella, M. Sorel +107
We report a measurement of the half-life of the Xe two-neutrino double beta decay performed with a novel direct background subtraction technique. The analysis relies on t…
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…
Initial results on energy resolution of the NEXT-White detector
J. Renner, P. Ferrario, G. MartÃnez-Lema +77
One of the major goals of the NEXT-White (NEW) detector is to demonstrate the energy resolution that an electroluminescent high pressure xenon TPC can achieve for high energy track…