A5052433661- X-ray Spectroscopy and Fluorescence Analysis
- Particle Detector Development and Performance
- Advanced X-ray Imaging Techniques
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Crystallography and Radiation Phenomena
- Muon and positron interactions and applications
- Cryospheric studies and observations
- Nuclear Physics and Applications
- Geology and Paleoclimatology Research
- Neutrino Physics Research
- Advanced X-ray and CT Imaging
- Cultural Heritage Materials Analysis
- Polar Research and Ecology
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Nuclear materials and radiation effects
- Planetary Science and Exploration
- Medical Imaging Techniques and Applications
- Geological and Geochemical Analysis
- Particle accelerators and beam dynamics
- Diamond and Carbon-based Materials Research
- Advanced Electron Microscopy Techniques and Applications
- Calibration and Measurement Techniques
- Dark Matter and Cosmic Phenomena
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2015-2024
Marconi University
2024
Frascati Scienza
2024
California Institute of Technology
2021-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2021-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
2013-2022
University of Rome Tor Vergata
2007-2022
Istituto Nazionale di Fisica Nucleare
2012-2021
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
2021
Yale University
2021
We present the first results of Fermilab Muon g-2 Experiment for positive muon magnetic anomaly $a_\mu \equiv (g_\mu-2)/2$. The is determined from precision measurements two angular frequencies. Intensity variation high-energy positrons decays directly encodes difference frequency $\omega_a$ between spin-precession and cyclotron frequencies polarized muons in a storage ring. ring field measured using nuclear resonance probes calibrated terms equivalent proton spin precession...
We present a new measurement of the positive muon magnetic anomaly, a_{μ}≡(g_{μ}-2)/2, from Fermilab Muon g-2 Experiment using data collected in 2019 and 2020. have analyzed more than 4 times number positrons decay our previous result 2018 data. The systematic error is reduced by factor 2 due to better running conditions, stable beam, improved knowledge field weighted distribution, ω[over ˜]_{p}^{'}, anomalous precession frequency corrected for beam dynamics effects, ω_{a}. From ratio...
The Muon g-2 Experiment at Fermi National Accelerator Laboratory (FNAL) has measured the muon anomalous precession frequency $ω_a$ to an uncertainty of 434 parts per billion (ppb), statistical, and 56 ppb, systematic, with data collected in four storage ring configurations during its first physics run 2018. When combined a precision measurement magnetic field experiment's ring, determines anomaly $a_μ({\rm FNAL}) = 116\,592\,040(54) \times 10^{-11}$ (0.46 ppm). This article describes...
The Fermi National Accelerator Laboratory has measured the anomalous precession frequency $a^{}_\mu = (g^{}_\mu-2)/2$ of muon to a combined precision 0.46 parts per million with data collected during its first physics run in 2018. This paper documents measurement magnetic field storage ring. is monitored by nuclear resonance systems and calibrated terms equivalent proton spin spherical water sample at 34.7$^\circ$C. weighted distribution resulting $\tilde{\omega}'^{}_p$, denominator ratio...
We present details on a new measurement of the muon magnetic anomaly, $a_\mu = (g_\mu -2)/2$. The result is based positive data taken at Fermilab's Muon Campus during 2019 and 2020 accelerator runs. uses $3.1$ GeV$/c$ polarized muons stored in $7.1$-m-radius storage ring with $1.45$ T uniform field. value $ a_{\mu}$ determined from measured difference between spin precession frequency its cyclotron frequency. This normalized to strength field, using Nuclear Magnetic Resonance (NMR). ratio...
Abstract Many interpretations have been proposed to explain the presence of jarosite within Martian surficial sediments, including possibility that it precipitated paleo-ice deposits owing englacial weathering dust. However, until now a similar geochemical process was not observed on Earth nor in other planetary settings. We report multi-analytical indication formation deep ice. Below 1000 m depth, crystals adhering residual silica-rich particles identified Talos Dome ice core (East...
We present a new measurement of the positive muon magnetic anomaly, $a_\mu \equiv (g_\mu - 2)/2$, from Fermilab Muon $g\!-\!2$ Experiment using data collected in 2019 and 2020. have analyzed more than 4 times number positrons decay our previous result 2018 data. The systematic error is reduced by factor 2 due to better running conditions, stable beam, improved knowledge field weighted distribution, $\tilde{\omega}'^{}_p$, anomalous precession frequency corrected for beam dynamics effects,...
The results of observation and studies focusing 400 GeV/c proton beam with the help bent single crystals are presented. Two silicon have been used in measurements. focal length first second is found to be 1.48 m 0.68 m, respectively. mean square size horizontal profile focus was 3.1 4.3 times as small at exit crystals.
The possibility of finding a stratigraphically intact ice sequence with potential basal age exceeding one million years in Antarctica is giving renewed interest to deep coring operations. But the older and deeper ice, more impactful are post-depositional processes that alter modify information entrapped within layers. Understanding situ occurring part cores essential comprehend how climatic signals preserved consequently construct paleoclimatic records. New techniques new interpretative...
Channeling is the confinement of trajectory a charged particle in crystalline solid. Positively particles channeled between crystal planes oscillate with certain oscillation length, which depends on energy. A whose thickness half length for planar channeling may act as mirror particles. If incident angle plane less than critical channeling, under-barrier undergo an and exit reversal their transverse momentum, i.e., are "mirrored" by planes. Unlike traditional scheme relying millimeter-long...
The anomalous magnetic moment of the muon is one most precisely measured quantities in experimental particle physics. Its latest measurement at Brookhaven National Laboratory deviates from Standard Model expectation by approximately 3.5 standard deviations. goal new experiment, E989, now under construction Fermilab, a fourfold improvement precision. Here, we discuss details future and its current status.
In ideal two-stage collimation systems, the secondary collimator–absorber should have its length sufficient to exclude practically exit of halo particles with large impact parameters. UA9 experiments on crystal assisted SPS beam a 60 cm long tungsten bar is used as which insufficient for full absorption protons. Multi-turn simulation studies allowed select position loss monitor downstream area where contribution deflected by in channeling regime but emerging from considerably reduced. This...
Novel results on high-resolution X-ray imaging by a table-top laboratory system based lithium fluoride (LiF) radiation detectors and tube combined with polycapillary optics are reported for the first time. In this paper, experiments of reference objects, as well thick geological samples, show some potentialities approach development compact microscopy apparatus. The high spatial resolution dynamic range versatile LiF detectors, optical reading photoluminescence from X-ray–induced color...
Abstract Ice cores from inner East Antarctica provided some of the longest and most detailed climatic reconstructions allowed understanding relationships between atmospheric mineral dust climate. In this work we present synchrotron radiation X‐ray Fluorescence geochemical data TALDICE ice core drilled at Talos Dome, a peripheral dome (Western Ross Sea). Results highlight dominant southern South American origin for during Last Glacial Maximum, similarly to other sites located further inland...
The analysis of particulate matter (PM) in dilute solutions is an important target for environmental, geochemical, and biochemical research. Here, we show how microdrop technology may allow the control, through evaporation small droplets, deposition insoluble materials dispersed a solution on well-defined area with specific spatial pattern. Using this technology, superficial density deposited solute can be accurately controlled. In particular, it becomes possible to deposit extremely reduced...
Recently, many experiments have highlighted the advantage of using polycapillary optics for x-ray fluorescence studies. We developed a special confocal scheme micro measurements that enables us to obtain not only elemental mapping sample but also simultaneously its own imaging. designed prototype compact spectrometer characterized by spatial resolution less than 100 microm and 10 A couple lenses in configuration together with silicon drift detector allow studies extended samples...