J. Martín-Albo
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View article: High efficiency glass-based VUV metasurfaces
High efficiency glass-based VUV metasurfaces Open
Most advances in metaoptics have been made at visible wavelengths and above; in contrast, the vacuum ultraviolet (VUV) has barely been explored despite numerous scientific and technological opportunities. Creating metaoptic elements at thi…
View article: Performance of an optical TPC Geant4 simulation with opticks GPU-accelerated photon propagation
Performance of an optical TPC Geant4 simulation with opticks GPU-accelerated photon propagation Open
We investigate the performance of , a 7.5 GPU-accelerated photon propagation tool compared with a single-threaded simulation. We compare the simulations using an improved model of the gaseous time projection chamber. Performance results su…
View article: Reconstructing neutrinoless double beta decay event kinematics in a xenon gas detector with vertex tagging
Reconstructing neutrinoless double beta decay event kinematics in a xenon gas detector with vertex tagging Open
A bstract If neutrinoless double beta decay is discovered, the next natural step would be understanding the lepton number violating physics responsible for it. Several alternatives exist beyond the exchange of light neutrinos. Some of thes…
View article: On the determination of the interaction time of GeV neutrinos in large argon gas TPCs
On the determination of the interaction time of GeV neutrinos in large argon gas TPCs Open
Next-generation megawatt-scale neutrino beams open the way to studying neutrino-nucleus scattering using gaseous targets for the first time. This represents an opportunity to improve the knowledge of neutrino cross sections in the energy r…
View article: High Voltage Delivery and Distribution for the NEXT-100 Time Projection Chamber
High Voltage Delivery and Distribution for the NEXT-100 Time Projection Chamber Open
A critical element in the realization of large liquid and gas time projection chambers (TPCs) is the delivery and distribution of high voltages into and around the detector. Such experiments require of order tens of kilovolts to enable ele…
View article: Performance of an Optical TPC Geant4 Simulation with Opticks GPU-Accelerated Photon Propagation
Performance of an Optical TPC Geant4 Simulation with Opticks GPU-Accelerated Photon Propagation Open
We investigate the performance of Opticks, a NVIDIA OptiX API 7.5 GPU-accelerated photon propagation tool compared with a single-threaded Geant4 simulation. We compare the simulations using an improved model of the NEXT-CRAB-0 gaseous time…
View article: Reconstructing neutrinoless double beta decay event kinematics in a xenon gas detector with vertex tagging
Reconstructing neutrinoless double beta decay event kinematics in a xenon gas detector with vertex tagging Open
If neutrinoless double beta decay is discovered, the next natural step would be understanding the lepton number violating physics responsible for it. Several alternatives exist beyond the exchange of light neutrinos. Some of these mechanis…
View article: Fluorescence Imaging of Individual Ions and Molecules in Pressurized Noble Gases for Barium Tagging in $^{136}$Xe
Fluorescence Imaging of Individual Ions and Molecules in Pressurized Noble Gases for Barium Tagging in $^{136}$Xe Open
The imaging of individual Ba$^{2+}$ ions in high pressure xenon gas is one possible way to attain background-free sensitivity to neutrinoless double beta decay and hence establish the Majorana nature of the neutrino. In this paper we demon…
View article: Simple strategy for the simulation of axially symmetric large-area metasurfaces
Simple strategy for the simulation of axially symmetric large-area metasurfaces Open
Metalenses are composed of nanostructures for focusing light and have been widely explored in many exciting applications. However, their expanding dimensions pose simulation challenges. We propose a method to simulate metalenses in a timel…
View article: Discovering long-lived particles at DUNE
Discovering long-lived particles at DUNE Open
Long-lived particles (LLPs) arise in many theories beyond the Standard Model. These may be copiously produced from meson decays (or through their mixing with the LLPs) at neutrino facilities and leave a visible decay signal in nearby neutr…
View article: Design, characterization and installation of the NEXT-100 cathode and electroluminescence regions
Design, characterization and installation of the NEXT-100 cathode and electroluminescence regions Open
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 gaseous time projection chamber (TPC) with 100 kg of xenon.…
View article: On the determination of the interaction time of GeV neutrinos in large argon gas TPCs
On the determination of the interaction time of GeV neutrinos in large argon gas TPCs Open
Next-generation megawatt-scale neutrino beams open the way to studying neutrino-nucleus scattering using gaseous targets for the first time. This represents an opportunity to improve the knowledge of neutrino cross sections in the energy r…
View article: VUV light collection enhancement with metasurface lenses
VUV light collection enhancement with metasurface lenses Open
Vacuum-ultraviolet (VUV) light has applications in many areas of fundamental research and technology, including high-energy physics (HEP) experiments and especially those based on scintillation of noble elements (xenon and argon).There are…
View article: The search for neutrinoless double-beta decay
The search for neutrinoless double-beta decay Open
Neutrinos are the only particles in the Standard Model that could be Majorana fermions, that is, completely neutral fermions that are their own antiparticles. The most sensitive known experimental method to verify whether neutrinos are Maj…
View article: Design, characterization and installation of the NEXT-100 cathode and electroluminescence regions
Design, characterization and installation of the NEXT-100 cathode and electroluminescence regions Open
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 gaseous time projection chamber (TPC) with 100 kg of xenon.…
View article: Demonstration of Event Position Reconstruction based on Diffusion in the NEXT-White Detector
Demonstration of Event Position Reconstruction based on Diffusion in the NEXT-White Detector Open
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 projection chambers typically assign event position in the drift…
View article: Simple strategy for simulation of large area of axially symmetric metasurfaces
Simple strategy for simulation of large area of axially symmetric metasurfaces Open
Metalenses are composed of nanostructures for focusing light and have been widely explored in many exciting applications. However, their expanding dimensions pose simulation challenges. We propose a method to simulate metalenses in a timel…
View article: Discovering Long-lived Particles at DUNE
Discovering Long-lived Particles at DUNE Open
Long-lived particles (LLPs) arise in many theories beyond the Standard Model. These may be copiously produced from meson decays (or through their mixing with the LLP) at neutrino facilities and leave a visible decay signal in nearby neutri…
View article: A Method To Characterize Metalenses For Light Collection Applications
A Method To Characterize Metalenses For Light Collection Applications Open
Metalenses and metasurfaces are promising emerging technologies that could improve light collection in light collection detectors, concentrating light on small area photodetectors such as silicon photomultipliers. Here we present a detaile…
View article: NEXT-CRAB-0: a high pressure gaseous xenon time projection chamber with a direct VUV camera based readout
NEXT-CRAB-0: a high pressure gaseous xenon time projection chamber with a direct VUV camera based readout Open
The search for neutrinoless double beta decay (0 νββ ) remains one of the most compelling experimental avenues for the discovery in the neutrino sector. Electroluminescent gas-phase time projection chambers are well suited to 0 νββ searche…
View article: Sensitivity of the NEXT experiment to Xe-124 double electron capture
Sensitivity of the NEXT experiment to Xe-124 double electron capture Open
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, potentially providing a new channel to measure the hypothes…
View article: A compact dication source for Ba<sup>2+</sup> tagging and heavy metal ion sensor development
A compact dication source for Ba<sup>2+</sup> tagging and heavy metal ion sensor development Open
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 evaporation and single or multiple electron impact ionization,…
View article: Demonstration of neutrinoless double beta decay searches in gaseous xenon with NEXT
Demonstration of neutrinoless double beta decay searches in gaseous xenon with NEXT Open
The NEXT experiment aims at the sensitive search of the neutrinoless double beta decay in $^{136}$Xe, using high-pressure gas electroluminescent time projection chambers. The NEXT-White detector is the first radiopure demonstrator of this …
View article: NEXT-CRAB-0: A High Pressure Gaseous Xenon Time Projection Chamber with a Direct VUV Camera Based Readout
NEXT-CRAB-0: A High Pressure Gaseous Xenon Time Projection Chamber with a Direct VUV Camera Based Readout Open
The search for neutrinoless double beta decay ($0νββ$) remains one of the most compelling experimental avenues for the discovery in the neutrino sector. Electroluminescent gas-phase time projection chambers are well suited to $0νββ$ search…
View article: A Compact Dication Source for Ba$^{2+}$ Tagging and Heavy Metal Ion Sensor Development
A Compact Dication Source for Ba$^{2+}$ Tagging and Heavy Metal Ion Sensor Development Open
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 evaporation and single or multiple electron impact ionization,…