L. Manzanillas
A5022561133- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Nuclear physics research studies
- Quantum Chromodynamics and Particle Interactions
- Nuclear Physics and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced X-ray Imaging Techniques
- Medical Imaging Techniques and Applications
- Superconducting and THz Device Technology
- Particle accelerators and beam dynamics
- CCD and CMOS Imaging Sensors
- Particle Accelerators and Free-Electron Lasers
- Vibration and Dynamic Analysis
- Advanced X-ray and CT Imaging
- Atomic and Subatomic Physics Research
- Radioactivity and Radon Measurements
- Color Science and Applications
- Muon and positron interactions and applications
- Geophysical and Geoelectrical Methods
- Gyrotron and Vacuum Electronics Research
- Electron and X-Ray Spectroscopy Techniques
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2019-2024
Synchrotron soleil
2022-2024
Max Planck Institute for Physics
2020-2024
TU Dresden
2023
Leibniz Institute for Crystal Growth
2023
Centre National de la Recherche Scientifique
2018-2022
Université Paris-Saclay
2018-2022
Institut National de Physique Nucléaire et de Physique des Particules
2018-2022
TU Dortmund University
2021
Oak Ridge National Laboratory
2021
The GERmanium Detector Array (GERDA) experiment searched for the lepton-number-violating neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay of $^{76}$Ge, whose discovery would have far-reaching implications in cosmology and particle physics. By operating bare germanium diodes, enriched an active liquid argon shield, GERDA achieved unprecedently low background index $5.2\times10^{-4}$ counts/(keV$\cdot$kg$\cdot$yr) signal region met design goal to collect exposure 100 kg$\cdot$yr a...
The reactor antineutrino anomaly might be explained by the oscillation of antineutrinos toward a sterile neutrino eV mass. In order to explore this hypothesis, STEREO experiment measures energy spectrum in six different detector cells covering baselines between 9 and 11 m from compact core ILL research reactor. Letter, results 66 days turned on 138 off are reported. A novel method extract rates has been developed based distribution pulse shape discrimination parameter. test new is performed...
The STEREO experiment is a very short baseline reactor antineutrino aiming at testing the hypothesis of light sterile neutrinos as an explanation deficit observed neutrino interaction rate with respect to predicted rate, known Reactor Antineutrino Anomaly. detector center located 10 m away from compact, highly 235U enriched core research nuclear Institut Laue Langevin in Grenoble, France. This paper describes site, components and associated shielding designed suppress external sources...
We present the measurement of two-neutrino double-β decay rate 76Ge performed with GERDA Phase II experiment. With a subset entire exposure, 11.8 kg yr, half-life process has been determined: T2ν1/2=(2.022±0.018stat±0.038syst)×1021 yr. This is most precise determination and one measurements process. The relevant nuclear matrix element can be extracted: M2νeff=(0.101±0.001).Received 13 May 2023Accepted 15 August 2023DOI:https://doi.org/10.1103/PhysRevLett.131.142501Published by American...
The SoLid experiment, short for Search Oscillations with a Lithium-6 detector, is new generation neutrino experiment which tries to address the key challenges high precision
The SoLid collaboration has developed a new detector technology to detect electron anti-neutrinos at close proximity the Belgian BR2 reactor surface level. A 288 kg prototype was deployed in 2015 and collected data during operational period of shut-down. Dedicated calibration campaigns were also performed with gamma neutron sources. This paper describes construction high control on its proton content stability operation over several months after deployment site. All cells provide sufficient...
Abstract In 1956 Reines & Cowan discovered the neutrino using a liquid scintillator detector. The neutrinos interacted with scintillator, producing light that propagated across transparent volumes to surrounding photo-sensors. This approach has remained one of most widespread and successful detection technologies used since. article introduces concept breaks conventional paradigm transparency by confining collecting near its creation point an opaque dense array optical fibres. technique,...
The GERmanium Detector Array (Gerda) collaboration searched for neutrinoless double- β decay in 76 Ge using isotopically enriched high purity germanium detectors at the Laboratori Nazionali del Gran Sasso of INFN. After Phase I (2011-2013), experiment benefited from several upgrades, including an additional active veto based on LAr instrumentation and a significant increase mass by point-contact that improved half-life sensitivity II (2015-2019) order magnitude. At core background mitigation...
Abstract The ability to detect liquid argon scintillation light from within a densely packed high-purity germanium detector array allowed the Gerda experiment reach an exceptionally low background rate in search for neutrinoless double beta decay of $${}^{76}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>76</mml:mn> </mml:msup> </mml:math> Ge. Proper modeling propagation throughout experimental setup, any origin volume its eventual detection by...
The GERmanium Detector Array (GERDA) collaboration searched for neutrinoless double-$\beta$ decay in $^{76}$Ge with an array of about 40 high-purity isotopically-enriched germanium detectors. experimental signature the is a monoenergetic signal at Q$_{\beta\beta}$ = 2039.061(7)keV measured summed energy spectrum two emitted electrons. Both reconstruction and resolution detectors are crucial to separate potential from various backgrounds, such as neutrino-accompanied decays allowed by...
Abstract A search for Beyond the Standard Model double- β decay modes of 76 Ge has been performed with data collected during Phase II GERmanium Detector Array ( Gerda ) experiment, located at Laboratori Nazionali del Gran Sasso INFN (Italy). Improved limits on decays involving Majorons have obtained, compared to previous experiments Ge, half-life values order 10 23 yr. For first time Lorentz invariance violation effects in obtained. The isotropic coefficient å (3) , which embeds decay,...
Abstract Poly Ethylene Naphthalate (PEN) is an industrial polymer plastic which investigated as a low background, transparent, scintillating and wavelength shifting structural material. PEN scintillates in the blue region has excellent mechanical properties both at room cryogenic temperatures. Thus, it ideal candidate for active components experiments search of rare events like neutrinoless double-beta decay or dark matter recoils. Such optically structures improve identification rejection...
Abstract The GERmanium Detector Array ( Gerda ) experiment operated enriched high-purity germanium detectors in a liquid argon cryostat, which contains 0.33% of $$^{36}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>36</mml:mn> </mml:mmultiscripts> </mml:math> Ar, candidate isotope for the two-neutrino double-electron capture (2 $$\nu $$ <mml:mi>ν</mml:mi> ECEC) and therefore neutrinoless (0 ECEC). If detected, this process would give...
Synchrotron radiation facilities provide highly polarized x-ray beams across a wide energy range. However, the exact type and degree of polarization vary according to beamline experimental setup. To accurately determine angle linear polarization, portable polarimeter has been developed. This setup consists silicon drift detector that rotates around target made high-density polyethylene. The imprint generated in angular distribution scattered photons from at 90-degree between incident x-rays...
The SoLid experiment aims to measure neutrino oscillation at a baseline of 6.4 m from the BR2 nuclear reactor in Belgium. Anti-neutrinos interact via inverse beta decay (IBD), resulting positron and neutron signal that are correlated time space. detector operates surface building, with modest shielding, relies on extremely efficient online rejection backgrounds order identify these interactions. A novel design has been developed using 12800 5 cm cubes for high segmentation. Each cube is...
Neutrinoless double-$\beta$ decay of $^{76}$Ge is searched for with germanium detectors where source and detector the are identical. For success future experiments it important to increase mass detectors. We report here on characterization testing five prototype manufactured in inverted coaxial (IC) geometry from material enriched 88% $^{76}$Ge. IC combine large traditional semi-coaxial Ge superior resolution pulse shape discrimination power point contact which exhibited so far much lower...
A new concept for the simultaneous detection of primary and secondary scintillation in time projection chambers is proposed. Its core element a type very-thick GEM structure supplied with transparent electrodes machined from polyethylene naphthalate plate, natural wavelength-shifter. Such device has good prospects scalability and, by virtue its genuine optical properties, it can improve on light collection efficiency, energy threshold resolution conventional micropattern gas detectors. This,...
This paper presents a comprehensive optimisation study to maximise the light collection efficiency of scintillating cube elements used in SoLid detector. Very short baseline reactor experiments, like SoLid, look for active sterile neutrino oscillation signatures anti-neutrino energy spectrum as function distance core and energy. Performing precise search requires high yield uniformity response detector volume. The experiment uses an innovative hybrid technology with two different...
Recent studies have shown that there are discrepancies between observations and the theoretical predictions in some neutrino experiments at short distances. In so-called ``Reactor Antineutrino Anomaly'' ``Gallium Anomaly'', these differences from expectations $\sim$3 $\sigma$ level both cases. Oscillations into a light sterile state ($\Delta m^{2} \sim 1eV^{2}$) could account for deficits observed rates. The STEREO experiment has been conceived to confirm or reject hypothesis. It will search...
PEN is an industrial polyester plastic which has become interesting for the physics community as a new type of scintillator. scintillates in blue regime, ideal most photosensor devices. In addition, excellent mechanical properties and very good radiopurity been achieved. Thus, it candidate active structural components low-background experiments. One possible application are holders germanium detectors operating cryogenic liquids (LAr, LN2). Such structures can help to reject surface external...
Polyethylene Naphthalate (PEN) plastic scintillator has been identified as potential self-vetoing structural material in low-background physics experiments. Scintillating components have produced radio-pure from PEN using injection compression molding technology. These will be used active holders to mount the Germanium detectors \legend-$200$ neutrinoless double beta decay experiment. In this paper we present measurement of optical properties these components. Thus, emission spectrum, time...
The SoLid experiment has been designed to search for an oscillation pattern induced by a light sterile neutrino state, utilising the BR2 reactor of SCK⋅CEN, in Belgium. detector leverages new hybrid technology, two distinct scintillators cubic array, creating highly segmented volume. A combination 5 cm polyvinyltoluene cells, with 6LiF:ZnS(Ag) sheets on faces each cube, facilitate reconstruction signals. Whilst high granularity provides powerful toolset discriminate backgrounds; itself...
Abstract Poly(ethylene naphthalate), PEN, is an industrial polyester which has been shown to scintillate in the blue wavelength region. Combined with measurements of a high intrinsic radiopurity, this sparked interest material for use low-background experiments.