A5019870966- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Advanced X-ray Imaging Techniques
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Advanced X-ray and CT Imaging
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Advanced Electron Microscopy Techniques and Applications
- Advancements in Photolithography Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Electron and X-Ray Spectroscopy Techniques
- Crystallography and Radiation Phenomena
- Advanced Semiconductor Detectors and Materials
- CCD and CMOS Imaging Sensors
- Particle Accelerators and Free-Electron Lasers
- Noncommutative and Quantum Gravity Theories
- X-ray Diffraction in Crystallography
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2022-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2022-2024
Roma Tre University
2024
University of Naples Federico II
2024
TRIUMF
2023-2024
University of Ferrara
2024
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2024
UCLouvain
2022-2023
Istituto Nazionale di Fisica Nucleare
2023
Paul Scherrer Institute
2013-2022
We report measurements of oscillation parameters from ν(μ) and disappearance using beam atmospheric data MINOS. The comprise exposures 10.71×10(20) protons on target in the ν(μ)-dominated beam, 3.36×10(20) ν(μ)-enhanced 37.88 kton yr neutrinos. Assuming identical ν parameters, we measure |Δm2| = (2.41(-0.10)(+0.09))×10(-3) eV2 sin2(2θ) 0.950(-0.036)(+0.035). Allowing independent oscillations, antineutrino (2.50(-0.25)(+0.23))×10(-3) 0.97(-0.08)(+0.03), with minimal change to neutrino parameters.
We report on ν(e) and appearance in ν(μ) beams using the full MINOS data sample. The comparison of these at a 735 km baseline with θ13 measurements by reactor experiments probes δ, θ23 octant degeneracy, mass hierarchy. This analysis is first use this technique includes accelerator long-baseline search for → ν(e). Our disfavor 31% (5%) three-parameter space defined θ23, hierarchy 68% (90%) C.L. measure value 2sin(2)(2θ13)sin(2)(θ23) that consistent experiments.
Laser based additive manufacturing allows to build a designed shape layer-by-layer, offering versatility and flexibility many metallurgical sectors. The fast cooling rates repeated heat cycles depending on the laser scanning parameters are not easily measurable with conventional methods. Thus, advanced predictive computational simulations, required reduce trial error lead time, difficult validate. A newly developed in operando X-ray diffraction device implemented at synchrotron beamline,...
We report an improved measurement of ν(μ) disappearance over a distance 735 km using the MINOS detectors and Fermilab Main Injector neutrino beam in ν(μ)-enhanced configuration. From total exposure 2.95×10(20) protons on target, which 42% have not been previously analyzed, we make most precise Δm2=[2.62(-0.28)(+0.31)(stat)±0.09(syst)]×10(-3) eV2 constrain mixing angle sin2(2θ)>0.75 (90% C.L.). These values are agreement with Δm2 sin2(2θ) measured for ν(μ), removing tension reported [P....
We have searched for sidereal variations in the rate of antineutrino interactions MINOS Near Detector. Using antineutrinos produced by NuMI beam, we find no statistically significant modulation rate. When this result is placed context Standard Model Extension theory are able to place upper limits on coefficients defining theory. These used combination with results from an earlier analysis neutrino data further constrain coefficients.
Eiger is a single-photon counting x-ray pixel detector being developed at the Paul Scherrer Institut (PSI) for applications synchrotron light sources. It follows widely utilized and successful Pilatus detector. The main features of are size 75 × μm2, high frame rate capability 22 kHz negligible dead time between frames 4 μs. This article contains detailed description systems, from 500 kpixel single-module to large-area multi-modules systems. calibration performance first system that in...
The two-dimensional pixel detector JUNGFRAU is designed for high performance photon science applications at free electron lasers and synchrotron light sources. It developed the SwissFEL currently under construction Paul Scherrer Institut, Switzerland. a hybrid with charge integration readout ASIC characterized by single sensitivity low noise over dynamic range of 104 12 keV photons. Geometrically, chip consists 256×256 pixels 75×75 μm2. chips are bump bonded to 320 μm thick silicon sensors....
JUNGFRAU is the pixel detector developed at PSI for SwissFEL [1]. Although development was driven by requirements, it soon realized that such a could also be ...
A sample of 3984 candidates the K+→π+γγ decay, with an estimated background 291±14 events, was collected by NA62 experiment at CERN during 2017–2018. In order to describe observed di-photon mass spectrum, next-to-leading contribution in chiral perturbation theory found be necessary. The decay branching ratio full kinematic range is measured (9.61±0.17)×10−7. first search for production and prompt axion-like particle gluon coupling process K+→π+a, a→γγ also reported.
The SwissFEL, a free electron laser (FEL) based next generation X-ray source, is being built at PSI. An XFEL poses several challenges to the detector development: in particular single photon counting readout, successful scheme case of synchrotron sources, can not be used. At same time data quality systems, i.e. low noise and high dynamic range, essential from an experimental point view.
MÖNCH is a 25 µm-pitch charge-integrating detector aimed at exploring the limits of current hybrid silicon technology. The small pixel size makes it ideal for high-resolution imaging. With an electronic noise about 110 eV r.m.s., opens new perspectives many synchrotron applications where currently limiting factor, e.g. inelastic X-ray scattering, Laue diffraction and soft or color Due to pitch, charge cloud generated by absorbed X-rays shared between neighboring pixels most photons....
MÖNCH is a hybrid silicon pixel detector based on charge integration and with analog readout, featuring size of 25×25 μm2. The latest working prototype consists an array 400×400 identical pixels for total active area 1×1 cm2. Its design optimized the single photon regime. An exhaustive characterization this large has been carried out in past months, it confirms ENC order 35 electrons RMS dynamic range ∼4×12 keV photons high gain mode, which increases to ∼100×12 lowest setting. low noise...
We report on the development of a miniaturized device for operando X-ray diffraction during laser 3D printing. The printing chamber has size only 130 × 135 34 mm3 and is optimized to be installed at synchrotron beamlines. describe design considerations, details setup implementation two different beamlines Swiss Light Source. Its capabilities are demonstrated by ex situ complex shapes experiments using Ti-6Al-4V powder. It shown that beamline characteristics have an important influence...
A bstract measurement of the $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>K</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>→</mml:mo> <mml:mi>π</mml:mi> <mml:mi>ν</mml:mi> <mml:mover> <mml:mo>¯</mml:mo> </mml:mover> </mml:math> decay by NA62 experiment at CERN SPS is presented, using data collected in 2021 and 2022. This dataset was recorded, after modifications to beamline detectors, a higher instantaneous beam...
The design of next-generation calorimeters for accelerator-borne experiments at the intensity frontier poses unprecedented challenges with regard to timing performance and radiation resistance, while rivaling current state art in terms energy resolution. A significant role may be played by quantum dots, i.e., light-emitting semiconductor nanocrystals high yield rather easy manufacture. Quantum dots can cast into an optically transparent polymer matrix obtain nanocomposite scintillators,...
The production of protons, anti-protons, neutrons, deuterons and tritons in minimum bias p+C interactions is studied using a sample 385 734 inelastic events obtained with the NA49 detector at CERN SPS 158 GeV/c beam momentum. data cover phase space area ranging from 0 to 1.9 transverse momentum Feynman x −0.8 0.95 for −0.2 0.3 anti-protons 0.1 neutrons. Existing far backward hemisphere are used extend coverage protons light nuclear fragments into region intra-nuclear cascading. use...
Electron crystallography is a discipline that currently attracts much attention as method for inorganic, organic and macromolecular structure solution. EIGER, direct-detection hybrid pixel detector developed at the Paul Scherrer Institut, Switzerland, has been tested electron diffraction in transmission microscope. EIGER features pitch of 75 × µm 2 , frame rates up to 23 kHz dead time between frames low 3 µs. Cluster size modulation transfer functions 100, 200 300 keV energies are reported...
Successful implementation of the single-photon-counting Eiger 500k pixel array detector for sub-millisecond X-ray photon correlation spectroscopy (XPCS) measurements in ultra-small-angle scattering region is reported. The performance demonstrated by measuring dynamics dilute silica colloids aqueous solvents when operated at different counter depths, 4, 8 and 12 bit. In fastest mode involving 4 bit parallel readout, a stable frame rate 22 kHz obtained that enabled measurement...
Searches for lepton number violating K+→π−e+e+ and K+→π−π0e+e+ decays have been performed using the complete dataset collected by NA62 experiment at CERN in 2016–2018. Upper limits of 5.3×10−11 8.5×10−10 are obtained on decay branching fractions 90% confidence level. The former result improves a factor four over previous best limit, while latter represents first limit rate.
A bstract sample of 1 . 3 × 10 5 K + → π 0 e νγ candidates with less than 1% background was collected by the NA62 experiment at CERN SPS in 2017–2018. Branching fraction measurements are obtained percent relative precision three restricted kinematic regions, improving on existing results a factor larger two. An asymmetry, possibly related to T-violation, is investigated no evidence observed within achieved precision.