Selçuk Hacıömeroğlu
A5000301395- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Muon and positron interactions and applications
- Neutrino Physics Research
- Physics of Superconductivity and Magnetism
- Computational Physics and Python Applications
- High-Energy Particle Collisions Research
- Non-Destructive Testing Techniques
- Scientific Research and Discoveries
- Quantum and electron transport phenomena
- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Electron and X-Ray Spectroscopy Techniques
- Geophysical and Geoelectrical Methods
- Quantum Chromodynamics and Particle Interactions
- Advanced MRI Techniques and Applications
- Advanced NMR Techniques and Applications
- Radioactivity and Radon Measurements
- Radioactive Decay and Measurement Techniques
- Industrial Vision Systems and Defect Detection
- Photocathodes and Microchannel Plates
- Surface Roughness and Optical Measurements
University of Liverpool
2024
Institute for Basic Science
2015-2023
Korea Advanced Institute of Science and Technology
2015-2019
University of Massachusetts Amherst
2019
Korea Research Institute of Standards and Science
2019
Istanbul Technical University
2013-2015
Brookhaven National Laboratory
2014-2015
Marmara University
2007
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...
This paper introduces a new approach to measure the muon magnetic moment anomaly |$a_{\mu} = (g-2)/2$| and electric dipole (EDM) |$d_{\mu}$| at J-PARC facility. The goal of our experiment is |$a_{\mu}$| using an independent method with factor 10 lower momentum, 20 smaller diameter storage-ring solenoid compared previous ongoing |$g-2$| experiments unprecedented quality storage field. Additional significant differences from present experimental include 1000 transverse emittance beam...
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...
A new experiment is described to detect a permanent electric dipole moment of the proton with sensitivity $10^{-29}e\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant are discussed and techniques address them presented. The measurement sensitive physics beyond Standard Model at scale 3000~TeV.
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 show that proton storage ring experiments designed to search for electric dipole moments can also be used look the nearly dc spin precession induced by dark energy and ultra-light matter. These are sensitive both axion-like vector fields. Current technology permits probes of these phenomena up three orders magnitude beyond astrophysical limits. The relativistic boost protons in rings allows this scheme have sensitivities comparable atomic co-magnetometer probe similar phenomena....
We propose using the storage ring electric dipole moment (EDM) method to search for axion dark matter induced EDM oscillation in nucleons. The uses a combination of $B$ and $E$ fields produce resonance between $g\ensuremath{-}2$ spin precession frequency background field greatly enhance sensitivity it. An range from ${10}^{\ensuremath{-}9}\text{ }\text{ }\mathrm{Hz}$ 100 MHz can, principle, be scanned with high sensitivity, corresponding an ${f}_{a}$ $1{0}^{13}\text{...
Static electric dipole moments of nondegenerate systems probe mass scales for physics beyond the Standard Model well those reached directly at high energy colliders. Discrimination between different models, however, requires complementary searches in atomic-molecular-and-optical, nuclear and particle physics. In this report, we discuss current status prospects near future a compelling suite such experiments, along with developments needed encompassing theoretical framework.
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,...
A concise demonstrative summary of the Symmetric Hybrid ring design for storage proton electric dipole moment experiment is presented. Critical issues such as lattice design, background electrical fields,geometrical phase, general relativity, spin coherence time and polarimeter systematics are Overall, we find that with currently proposed iteration, systematic error sources reduced by orders magnitude alignment requirements within available technology.
The axion, a consequence of the PQ mechanism, has been considered as most elegant solution to strong-CP problem and compelling candidate for cold dark matter. Center Axion Precision Physics Research (CAPP) Institute Basic Science (IBS) was established on 16 October 2013 with main objective launch state art axion experiments in South Korea. Relying haloscope technique, our strategy is run several parallel explore wide range masses sensitivities better than QCD models. We utilize not only...
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.
A new, hybrid design is proposed to eliminate the main systematic errors in frozen spin, storage ring measurement of proton electric dipole moment. In this design, bending plates steer particles, and magnetic focusing replaces electric. The should permit simultaneous clockwise counterclockwise cancel related out-of-plane field. Errors quadrupole fields can be eliminated by successive runs with different strengths.
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...
We describe a proposal to search for an intrinsic electric dipole moment (EDM) of the proton with sensitivity \targetsens, based on vertical rotation polarization stored beam. The New Physics reach is order $10^~3$TeV mass scale. Observation EDM provides best probe CP-violation in Higgs sector, at level that may be inaccessible electron-EDM experiments. improvement $\theta_{QCD}$, parameter crucial axion and dark matter physics, about three orders magnitude.
This paper introduces a new approach to measure the muon magnetic moment anomaly $a_{\mu} = (g-2)/2$, and electric dipole (EDM) $d_{\mu}$ at J-PARC facility. The goal of our experiment is $a_{\mu}$ using an independent method with factor 10 lower momentum, 20 smaller diameter storage-ring solenoid compared previous ongoing $g-2$ experiments unprecedented quality storage field. Additional significant differences from present experimental include 1,000 transverse emittance beam (reaccelerated...
The proton electric dipole moment (pEDM) experiment is proposed to be done with two counter-rotating beams in an all-electric storage ring. Radial magnetic field one of the most critical systematic errors as it mimics EDM signal. Its secondary effect a vertical split between beams. According proposal pEDM experiment, that should monitored and compensated picometer level by beam position monitoring systems (BPM). We propose BPM using Superconducting QUantum Interference Devices or SQUIDs...
Misplacement of electrostatic elements can pose false EDM signal in a storage ring experiment because coupling between vertical electric field and magnetic dipole moment. A vertically misplaced quadrupole introduces proportional to its misplacement, changing periodically the particle's rest frame during storage. This leads accumulation spin component at every revolution. We investigated this effect by simulating proton an all-electric with several scenarios. It turns out that misplacement...
This work demonstrates that two systematic errors, coherent betatron oscillations (CBO) and muon losses can be reduced through application of radio frequency (RF) electric fields, which ultimately increases the sensitivity $g-2$ experiments. As ensemble polarized muons goes around a weak focusing storage ring, their spin precesses, when they decay interaction, $\mu^+ \rightarrow e^+ \nu_e \bar{\nu_\mu}$, positrons are detected by electromagnetic calorimeters. In addition to expected...