J.M.F. dos Santos
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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: Experimental characterization of electron transport and electroluminescence in xenon-molecular mixtures
Experimental characterization of electron transport and electroluminescence in xenon-molecular mixtures Open
We have developed a comprehensive methodology to measure electron transport and electroluminescence parameters in xenon-based gaseous detectors using photosensor waveform analysis. Our approach integrates measurements of the Fano factor, e…
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: Modeling the light response of an optically readout GEM based TPC for the CYGNO experiment
Modeling the light response of an optically readout GEM based TPC for the CYGNO experiment Open
The use of gaseous Time Projection Chambers enables the detection and the detailed study of rare events due to particles interactions with the atoms of the gas with energy releases as low as a few keV. Due to this capability, these instrum…
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: Efficient noble gas purification using hot getters and gas circulation by convection
Efficient noble gas purification using hot getters and gas circulation by convection Open
Noble gas radiation detectors with optical readout are gaining popularity in fields like astrophysics and particle physics due to their ability to produce both ionization and scintillation signals in response to ionizing radiation interact…
View article: Solid angle compensation in gas proportional scintillation counters using an annular anode with azimuthal geometry
Solid angle compensation in gas proportional scintillation counters using an annular anode with azimuthal geometry Open
A new, simple and robust design for a gas proportional scintillation counter (GPSC) is studied. One sole electrode, the anode, is used to define the electric field in the drift and scintillation regions of the detector volume. The anode ha…
View article: Efficient noble gas purification using hot getters and gas circulation by convection
Efficient noble gas purification using hot getters and gas circulation by convection Open
Noble gas radiation detectors with optical readout are gaining popularity in fields like astrophysics and particle physics due to their ability to produce both ionization and scintillation signals in response to ionizing radiation interact…
View article: Noise Removal in One-Dimensional Signals using Iterative Shrinkage Total Variation Algorithm
Noise Removal in One-Dimensional Signals using Iterative Shrinkage Total Variation Algorithm Open
The total variation filtering technique emerges as a highly effective strategy for restoring signals with discontinuities in various parts of their structure. This study presents and implements a one-dimensional signal filtering algorithm …
View article: Enhancing the light yield of He:CF$_4$ based gaseous detector
Enhancing the light yield of He:CF$_4$ based gaseous detector Open
The CYGNO experiment aims to build a large ($\mathcal{O}(10)$ m$^3$) directional detector for rare event searches, such as nuclear recoils (NRs) induced by dark matter (DM), such as weakly interactive massive particles (WIMPs). The detecto…
View article: Understanding the xenon primary scintillation yield for cutting-edge rare event experiments
Understanding the xenon primary scintillation yield for cutting-edge rare event experiments Open
Xenon scintillation has been widely used in rare event detection experiments, such as in neutrinoless double beta decay, double electron captures and dark matter searches. Nonetheless, experimental values for primary scintillation yield in…
View article: Charge amplification in low pressure CF<sub>4</sub>:SF<sub>6</sub>:He mixtures with a multi-mesh ThGEM for directional dark matter searches
Charge amplification in low pressure CF<sub>4</sub>:SF<sub>6</sub>:He mixtures with a multi-mesh ThGEM for directional dark matter searches Open
The CYGNO collaboration is developing next generation directional Dark Matter (DM) detection experiments, using gaseous Time Projection Chambers (TPCs), as a robust method for identifying Weakly Interacting Massive Particles (WIMPs) below …
View article: Charge Amplification in Low Pressure CF4:SF6:He Mixtures with a Multi-Mesh ThGEM for Directional Dark Matter Searches
Charge Amplification in Low Pressure CF4:SF6:He Mixtures with a Multi-Mesh ThGEM for Directional Dark Matter Searches Open
The CYGNO collaboration is developing next generation directional Dark Matter (DM) detection experiments, using gaseous Time Projection Chambers (TPCs), as a robust method for identifying Weakly Interacting Massive Particles (WIMPs) below …
View article: Study of long term stability of a 50 liters TPC, based on TRIPLE-GEM with optical readout, for the CYGNO experiment
Study of long term stability of a 50 liters TPC, based on TRIPLE-GEM with optical readout, for the CYGNO experiment Open
The CYGNO project aims to study rare events, as low -mass (few GeV) Dark Matter (DM) particle or solar neutrino interactions, exploiting the approach of the optical readout of the scintillation light produced in the amplification in a mult…
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: 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: The CYGNO project for directional Dark Matter searches
The CYGNO project for directional Dark Matter searches Open
The CYGNO project aims to develop a high-precision optical Time Projection Chamber (TPC) for directional Dark Matter search and solar neutrino spettroscopy, to be hosted at Laboratori Nazionali del Gran Sasso (LNGS). \nThe distinctive feat…
View article: Data handling of CYGNO experiment using INFN-Cloud solution
Data handling of CYGNO experiment using INFN-Cloud solution Open
The INFN Cloud project was launched at the beginning of 2020, aiming to build a distributed Cloud infrastructure and provide advanced services for the INFN scientific communities. A Platform as a Service (PaaS) was created inside INFN Clou…
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…