A5101885717- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Superconducting Materials and Applications
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Quantum Chromodynamics and Particle Interactions
- Particle accelerators and beam dynamics
- Radiation Detection and Scintillator Technologies
- Muon and positron interactions and applications
- Scientific Research and Discoveries
- Neutrino Physics Research
- Nuclear physics research studies
- Dark Matter and Cosmic Phenomena
- Magnetic confinement fusion research
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Gyrotron and Vacuum Electronics Research
- Quantum, superfluid, helium dynamics
- Astrophysics and Cosmic Phenomena
- Advanced Data Storage Technologies
- Radiation Effects in Electronics
University of Kentucky
2015-2024
American University
2024
Kentucky Department of Education
2024
Massachusetts Institute of Technology
2006-2008
University of Virginia
2001
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...
We report the first measurement using a solid polarized target of neutron electric form factor G(n)(E) via d-->(e-->,e(')n)p. was determined from beam-target asymmetry in scattering longitudinally electrons deuterated ammonia ( 15ND3). The performed Hall C at Thomas Jefferson National Accelerator Facility quasifree kinematics with polarization perpendicular to momentum transfer. were detected magnetic spectrometer coincidence neutrons large angle segmented detector. find =...
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,...
We report new measurements of the neutron charge form factor at low momentum transfer using quasielastic electrodisintegration deuteron. Longitudinally polarized electrons an energy 850 MeV were scattered from isotopically pure, highly deuterium gas target. The and coincident neutrons measured by Bates Large Acceptance Spectrometer Toroid (BLAST) detector. ratio GEn/GMn was extracted beam-target vector asymmetry AedV four-momentum transfers Q2=0.14, 0.20, 0.29, 0.42 (GeV/c)2.Received 26...
We report an underlying event tune for the pythia8 Monte Carlo generator that is applicable hadron collisions primarily at $\sqrt{s}$ ranges available Relativistic Heavy-Ion Collider (RHIC). compare our new tuned predictions to midrapidity inclusive ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ spectra, jet substructure, Drell-Yan production, and measurements from RHIC Tevatron, as well data Large Hadron Collider. With respect default Monash Tune, ``Detroit'' shows significant...
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.
This paper presents the beam dynamics systematic corrections and their uncertainties for Run-1 data set of Fermilab Muon g-2 Experiment. Two to measured muon precession frequency $\omega_a^m$ are associated with well-known effects owing use electrostatic quadrupole (ESQ) vertical focusing in storage ring. An average vertically oriented motional magnetic field is felt by relativistic muons passing transversely through radial electric components created ESQ system. The correction depends on...
Abstract The successful realization of the EIC scientific program requires design and construction high-performance particle detectors. Recent developments in field computing increased availability high performance resources have made it possible to perform optimization multi-parameter designs, even when latter require longer computational times (for example simulations interactions with matter). Procedures involving machine-assisted techniques used inform decision seen a considerable growth...
The success of high energy physics programs relies heavily on accurate detector simulations and beam interaction modeling. increasingly complex geometries dynamics require sophisticated techniques in order to meet the demands current future experiments. Common software tools used today are unable fully utilize modern computational resources, while data-recording rates often orders magnitude larger than what can be produced via simulation. In this paper, we describe state, needs beamline...
We report an underlying event tune for the PYTHIA 8 Monte Carlo generator that is applicable hadron collisions primarily at $\sqrt{s}$ ranges available Relativistic Heavy-Ion Collider (RHIC). compare our new tuned predictions to mid-rapidity inclusive $\pi^{\pm}$ spectra, jet sub-structure, Drell-Yan production, and measurements from RHIC Tevatron, as well data Large Hadron Collider. With respect default Monash Tune, `Detroit' shows significant improvements in description of experimental...
An electron‐proton/ion collider facility (eRHIC) is under consideration at Brookhaven National Laboratory. This high energy, intensity polarized electron/positron beam designed to provide collisions with the existing RHIC heavy ion and proton beams. upgraded will require design construction of detectors, optimized for reconstruction underlying e‐p/ion event kinematics tailored constraints interaction region. Two independent complimentary detector designs have been discussed by MIT MPI‐Munich...
General purpose Monte Carlo event generators are a vital component of the feedback loop between experimental measurement, where they used to model detector effects and correct for them, theory, comparisons data can inform further improvements in models. However, most tuning exercises performed on LHC or Tevatron data, with recent RHIC tune being single-parameter modification PYTHIA-6 Perugia 2012 that is typically STAR. We present new underlying – “Detroit” PYTHIA-8 suitable pp collisions at...