J. J. Cuenca-García
A5023092890- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Particle Detector Development and Performance
- Nuclear Physics and Applications
- Nuclear physics research studies
- Radiation Detection and Scintillator Technologies
- Quantum, superfluid, helium dynamics
- Astrophysics and Cosmic Phenomena
- Nuclear reactor physics and engineering
- Scientific Research and Discoveries
- Cosmology and Gravitation Theories
- Astronomical and nuclear sciences
- Quantum Chromodynamics and Particle Interactions
- Atomic and Molecular Physics
- Computational Physics and Python Applications
- Gaussian Processes and Bayesian Inference
- Superconducting Materials and Applications
- Radiation Therapy and Dosimetry
- Process Optimization and Integration
- Astronomy and Astrophysical Research
- High-Energy Particle Collisions Research
- Solar and Space Plasma Dynamics
- Photocathodes and Microchannel Plates
University of Zurich
2022-2025
Karlsruhe Institute of Technology
2020-2024
Xenon Pharmaceuticals (Canada)
2023
Uzhhorod National University
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2023
Universidade de Santiago de Compostela
2019
GSI Helmholtz Centre for Heavy Ion Research
2013
Research Association for Combustion Engines
2008
We report on the first search for nuclear recoils from dark matter in form of weakly interacting massive particles (WIMPs) with XENONnT experiment, which is based a two-phase time projection chamber sensitive liquid xenon mass 5.9 ton. During (1.09±0.03) ton yr exposure used this search, intrinsic ^{85}Kr and ^{222}Rn concentrations target are reduced to unprecedentedly low levels, giving an electronic recoil background rate (15.8±1.3) events/ton keV region interest. A blind analysis events...
We report on a blinded analysis of low-energy electronic-recoil data from the first science run XENONnT dark matter experiment. Novel subsystems and increased 5.9 tonne liquid xenon target reduced background in (1, 30) keV search region to $(15.8 \pm 1.3)$ events/(tonne$\times$year$\times$keV), lowest ever achieved detector $\sim$5 times lower than XENON1T. With an exposure 1.16 tonne-years, we observe no excess above set stringent new limits solar axions, enhanced neutrino magnetic moment,...
Delayed single- and few-electron emissions plague dual-phase time projection chambers, limiting their potential to search for light-mass dark matter. This paper examines the origins of these events in XENON1T experiment. Characterization intensity delayed electron backgrounds shows that resulting are correlated, position, with high-energy can effectively be vetoed. In this work we extend previous S2-only analyses down a single electron. From analysis, after removing correlated backgrounds,...
We present the first measurement of nuclear recoils from solar <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mmultiscripts><a:mrow><a:mi mathvariant="normal">B</a:mi></a:mrow><a:mprescripts/><a:none/><a:mrow><a:mn>8</a:mn></a:mrow></a:mmultiscripts></a:mrow></a:math> neutrinos via coherent elastic neutrino-nucleus scattering with XENONnT dark matter experiment. The central detector is a low-background, two-phase time projection chamber 5.9 t sensitive...
The multi-staged XENON program at INFN Laboratori Nazionali del Gran Sasso aims to detect dark matter with two-phase liquid xenon time projection chambers of increasing size and sensitivity. XENONnT experiment is the latest detector in program, planned be an upgrade its predecessor XENON1T. It features active target 5.9 tonnes cryogenic (8.5 total mass cryostat). expected extend sensitivity WIMP by more than order magnitude compared XENON1T, thanks larger significantly reduced background,...
We search for dark matter (DM) with a mass [3,12] GeV/c^{2} using an exposure of 3.51 tonne year the XENONnT experiment. consider spin-independent DM-nucleon interactions mediated by heavy or light mediator, spin-dependent DM-neutron interactions, momentum-dependent DM scattering, and mirror DM. Using lowered energy threshold compared to previous weakly interacting massive particle search, blind analysis [0.5, 5.0] keV nuclear recoil events reveals no significant signal excess over...
We have performed large-scale shell-model calculations of the half-lives and neutron-branching probabilities $r$-process waiting-point nuclei at magic neutron numbers $N=50$, 82, 126. The include contributions from allowed Gamow-Teller first-forbidden transitions. find good agreement with measured for $N=50$ charge $Z=28$--32 $N=82$ ${}^{129}$Ag ${}^{130}$Cd. contribution forbidden transitions reduce $N=126$ significantly, while they only a small effect on 82 nuclei.
The XENONnT experiment, located at the INFN Laboratori Nazionali del Gran Sasso, Italy, features a 5.9 tonne liquid xenon time projection chamber surrounded by an instrumented neutron veto, all of which is housed within muon veto water tank. Because extensive shielding and advanced purification to mitigate natural radioactivity, exceptionally low background level <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo...
The $\ensuremath{\gamma}$ decay of excited states in the waiting-point nucleus $^{130}\mathrm{Cd}_{82}$ has been observed for first time. An ${8}^{+}$ two-quasiparticle isomer populated both fragmentation a $^{136}\mathrm{Xe}$ beam as well projectile fission $^{238}\mathrm{U}$, making $^{130}\mathrm{Cd}$ most neutron-rich $N=82$ isotone which information about is available. results, interpreted using state-of-the-art nuclear shell-model calculations, show no evidence an shell quenching at...
Abstract The DARWIN observatory is a proposed next-generation experiment to search for particle dark matter and the neutrinoless double beta decay of $$^{136}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>136</mml:mn> </mml:msup> </mml:math> Xe. Out its 50 t total natural xenon inventory, 40 will be active target time projection chamber which thus contains about 3.6 Here, we show that projected half-life sensitivity $$2.4\times {10}^{27}\,{\hbox...
We present results on the search for double-electron capture ($2\nu\text{ECEC}$) of $^{124}$Xe and neutrinoless double-$\beta$ decay ($0\nu\beta\beta$) $^{136}$Xe in XENON1T. consider captures from K- up to N-shell $2\nu\text{ECEC}$ signal model measure a total half-life $T_{1/2}^{2\nu\text{ECEC}}=(1.1\pm0.2_\text{stat}\pm0.1_\text{sys})\times 10^{22}\;\text{yr}$ with $0.87\;\text{kg}\times\text{yr}$ isotope exposure. The statistical significance is $7.0\,\sigma$. use XENON1T data...
The selection of low-radioactive construction materials is the utmost importance for rare-event searches and thus critical to XENONnT experiment. Results an extensive radioassay program are reported, in which material samples have been screened with gamma-ray spectroscopy, mass spectrometry, 222 Rn emanation measurements. Furthermore, cleanliness procedures applied remove or mitigate surface contamination detector described. Screening results, used as inputs a Monte Carlo simulation, predict...
Abstract We detail the sensitivity of proposed liquid xenon DARWIN observatory to solar neutrinos via elastic electron scattering. find that will have potential measure fluxes five neutrino components: pp , $$^7$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>7</mml:mn> </mml:msup> </mml:math> Be, $$^{13}$$ <mml:mn>13</mml:mn> N, $$^{15}$$ <mml:mn>15</mml:mn> O and pep . The precision components is hindered by double-beta decay $$^{136}$$...
This report describes the experimental strategy and technologies for a next-generation xenon observatory sensitive to dark matter neutrino physics. The detector will have an active liquid target mass of 60-80 tonnes is proposed by XENON-LUX-ZEPLIN-DARWIN (XLZD) collaboration. design based on mature time projection chamber technology current-generation experiments, LZ XENONnT. A baseline opportunities further optimization individual components are discussed. experiment envisaged here has...
Abstract The precision in reconstructing events detected a dual-phase time projection chamber depends on an homogeneous and well understood electric field within the liquid target. In XENONnT TPC homogeneity is achieved through double-array cage, consisting of two nested arrays shaping rings connected by easily accessible resistor chain. Rather than being to gate electrode, topmost ring independently biased, adding degree freedom tune during operation. Two-dimensional finite element...
Abstract Xenoscope is a demonstrator for next-generation xenon-based observatory astroparticle physics, as proposed by the XLZD (XENON-LUX-ZEPLIN-DARWIN) collaboration. It houses 2.6 m tall, two-phase xenon time projection chamber (TPC), in cryostat filled with ∼360 kg of liquid xenon. The main goals facility are to demonstrate electron drift over this distance, measure cloud transversal and longitudinal diffusion, well optical properties medium. In work, we describe detail construction...
Abstract The XLZD collaboration is developing a two-phase xenon time projection chamber with an active mass of 60–80 t capable probing the remaining weakly interacting massive particle-nucleon interaction parameter space down to so-called neutrino fog. In this work we show that, based on performance currently operating detectors using same technology and realistic reduction radioactivity in detector materials, such experiment will also be able competitively search for neutrinoless double...
We report on a blinded search for dark matter with single- and few-electron signals in the first science run of XENONnT relying novel detector response framework that is physics model dependent. derive 90% confidence upper limits matter-electron interactions. Heavy light mediator cases are considered standard halo up-scattered Sun. set stringent new scattering via heavy mass within 10-20 MeV/c^{2} electron absorption axionlike particles photons m_{χ} below 0.03 keV/c^{2}.
Neutron-rich silver isotopes were populated in the fragmentation of a ${}^{136}$Xe beam and relativistic fission ${}^{238}$U. The fragments mass analyzed with GSI Fragment Separator subsequently implanted into passive stopper. Isomeric transitions detected by 105 high-purity germanium detectors. Eight isomeric states observed ${}^{122\ensuremath{-}126}$Ag nuclei. level schemes ${}^{122,123,125}$Ag revised extended being for first time. excited odd-mass are interpreted as core-coupled states....
Multiple viable theoretical models predict heavy dark matter particles with a mass close to the Planck mass, range relatively unexplored by current experimental measurements. We use 219.4 days of data collected XENON1T experiment conduct blind search for signals from multiply interacting massive (MIMPs). Their unique track signature allows targeted analysis only 0.05 expected background events muons. Following unblinding, we observe no signal candidate events. This Letter places strong...
Abstract The XENONnT detector uses the latest and largest liquid xenon-based time projection chamber (TPC) operated by XENON Collaboration, aimed at detecting Weakly Interacting Massive Particles conducting other rare event searches. data acquisition (DAQ) system constitutes an upgraded expanded version of XENON1T DAQ system. For its operation, it relies predominantly on commercially available hardware accompanied open-source custom-developed software. three constituent subsystems detector,...
We developed a detector signal characterization model based on Bayesian network trained the waveform attributes generated by dual-phase xenon time projection chamber. By performing inference model, we produced quantitative metric of and demonstrate that this can be used to determine whether is sourced from scintillation or an ionization process. describe method its performance electronic-recoil (ER) data taken during first science run XENONnT dark matter experiment. use in waveform-based...