M. Syphers
A5022813559- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Gyrotron and Vacuum Electronics Research
- Muon and positron interactions and applications
- Magnetic confinement fusion research
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Neutrino Physics Research
- Distributed and Parallel Computing Systems
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Quantum Chromodynamics and Particle Interactions
- Advanced X-ray Imaging Techniques
- Astrophysics and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Quantum and electron transport phenomena
- Quantum chaos and dynamical systems
- Radiation Therapy and Dosimetry
- Plasma Diagnostics and Applications
- Scientific Research and Discoveries
- Physics of Superconductivity and Magnetism
- Geophysics and Gravity Measurements
Northern Illinois University
2016-2024
Fermi National Accelerator Laboratory
2010-2024
Michigan State University
2012-2014
National Superconducting Cyclotron Laboratory
2012
Brookhaven National Laboratory
1996-2006
Fermi Research Alliance
2002-2006
RIKEN BNL Research Center
2002-2006
SLAC National Accelerator Laboratory
2004
Lawrence Berkeley National Laboratory
1989-2003
Supercon (United States)
1993-2002
The discovery by the ATLAS and CMS experiments of a new boson with mass around 125 GeV measured properties compatible those Standard-Model Higgs boson, coupled absence discoveries phenomena beyond Standard Model at TeV scale, has triggered interest in ideas for future factories. A circular e+e- collider hosted 80 to 100 km tunnel, TLEP, is among most attractive solutions proposed so far. It clean experimental environment, produces high luminosity top-quark, W Z studies, accommodates multiple...
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 analyzing powers of ${\ensuremath{\pi}}^{+}$ and ${\ensuremath{\pi}}^{\ensuremath{-}}$ were measured using an incident $22\ensuremath{-}\mathrm{GeV}/c$ transversely polarized proton beam at the Brookhaven Alternating Gradient Synchrotron. A magnetic spectrometer ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ inclusive asymmetries on a hydrogen carbon target. An elastic polarimeter with ${\mathrm{CH}}_{2}$ target pp elastic-scattering to determine polarization published data for...
The nonlinear dynamics of transverse particle oscillations in the Fermilab Tevatron is studied experimentally and compared with prediction. Accurate measurements various phase-space features are obtained. A theoretically expected metastable state accelerator, particles captured on resonance islands, demonstrated experimentally, stability investigated.
A coherent spin resonance excited by an rf dipole was used to overcome depolarization due intrinsic resonances at the Alternating Gradient Synchrotron (AGS) Brookhaven National Laboratory. We found that our data are consistent with a full flip of polarized proton beam, without emittance growth, $G\ensuremath{\gamma}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}12+{\ensuremath{\nu}}_{z}$ and $36\ensuremath{-}{\ensuremath{\nu}}_{z}$, adiabatically exciting vertical betatron oscillation...
Synchrotron motion with rf phase modulation was studied experimentally. Poincaré maps in the resonant precessing frame were obtained from experimental data and compared tori of Hamiltonian. Our revealed island structure longitudinal space. Experimental results for synchrotron excited by at third harmonic frequency are also reported.Received 28 June 1993DOI:https://doi.org/10.1103/PhysRevE.48.4678©1993 American Physical Society
The synchroton motion of a beam was tracked for the first time by digitizing phase signal from high bandwidth wall gap monitor relative to rf and momentum deviation with transverse position measurement in dispersion region. measured synchrotron tune as function amplitude agrees well theory. When stable angle modulated harmonically, response showed characteristics chaos bifurcations parametric resonant system. Manipulating system create islands space may offer applications future hadron...
Sustained coherent betatron oscillations have been produced in the Brookhaven National Laboratory Alternating Gradient Synchrotron (AGS) using a high-frequency oscillating dipole field operating very near subharmonic of tune. The were adiabatically induced and manipulated controlled fashion so that transverse emittance particle beam was preserved. This procedure will be used to induce spin flip AGS during crossing depolarizing resonances polarized operation. It may also find applications...
An AC dipole is a magnet which produces sinusoidally oscillating field and excites coherent transverse beam oscillations in synchrotron. By observing this driven oscillation, the linear optical parameters can be directly measured at locations of position monitors. The induced by an will generate phase space ellipse differs from that free oscillations. If not properly accounted for, difference lead to misinterpretations actual parameters, for instance, 6% or more cases Tevatron, RHIC, LHC....
Synchro-betatron coupling in a proton storage ring with electron cooling was studied experimentally by modulating transverse dipole field close to the synchrotron frequency. The combination of and modulation on oscillation is equivalent dissipative parametric resonant system. bunch observed split longitudinally into two pieces, or beamlets, converging toward attractors These phenomena might be important understanding effect ground vibration Superconducting Super Collider beam, power supply...
The analyzing power for proton-carbon elastic scattering in the Coulomb-nuclear interference region of momentum transfer, 9.0×10−3<−t<4.1×10−2 (GeV/c)2, was measured with a 21.7 GeV/c polarized proton beam at Alternating Gradient Synchrotron Brookhaven National Laboratory. ratio hadronic spin-flip to nonflip amplitude, r5, obtained from be Rer5=0.088±0.058 and Imr5=−0.161±0.226.Received 11 February 2002DOI:https://doi.org/10.1103/PhysRevLett.89.052302©2002 American Physical Society
Muon Colliders have unique technical and physics advantages disadvantages when compared with both hadron electron machines. They should thus be regarded as complementary. Parameters are given of 4 TeV 0.5 high luminosity \mumu colliders, a lower demonstration machine. We discuss the various systems in such muon starting from proton accelerator needed to generate muons proceeding through cooling, acceleration storage collider ring. Problems detector background also discussed.
Synchrotron motion with an external rf voltage modulation was studied experimentally. Beam particles, in the presence of electron cooling, were observed to damp basins resonance islands, which produced by parametric due modulation. The measured phase amplitudes centers these islands found agree well theory.
The time variation in the magnetic field of a model Tevatron dipole magnet at constant excitation current has been studied. Variations symmetry allowed harmonic components over long ranges show log t behavior indicative 'flux creep'. Both short-time-range and long-time-range depend on history. Similar effects are seen remnant fields present full-scale dipoles following ramping. magnitudes dependences observed to details such as ramp rate, flattop duration, number ramps. In few magnets,...
The time dependence of magnetic fields in the superconducting magnets Fermilab Tevatron is discussed. A field variation order 1 G at aperture radius observed. Studies on both full-sized dipoles and prototype have been used to elucidate these effects. Explanations based eddy currents coil matrix or flux creep filaments are explored with tests. Measurement results techniques for controlling effect novel laboratory tests latest accelerator operation presented. It shown that small but important...
Muon Colliders have unique technical and physics advantages disadvantages when compared with both hadron electron machines. They should thus be regarded as complementary. Parameters are given of 4 TeV 0.5 high luminosity \mu^+ \mu^- colliders, a lower demonstration machine. We discuss the various systems in such muon starting from proton accelerator needed to generate muons proceeding through cooling, acceleration storage collider ring. Detector background, polarization, nonstandard...
FCC-hh is a proposed future energy-frontier hadron collider, based on dipole magnets with field around 16 T installed in new tunnel circumference of about 100 km, which would provide proton collisions at centre-ofmass energy TeV, as well heavy-ion the equivalent energy. The should deliver high integrated proton-proton luminosity level several fb −1 per year, or more. challenges for operating beam current and include heat load from synchrotron radiation cold environment, collision debris...
This paper presents the physics case for a new high-energy, ultra-high statistics neutrino scattering experiment, NuSOnG (Neutrino Scattering on Glass). experiment uses Tevatron-based beam to obtain over an order of magnitude higher than presently available purely weak processes ν μ + e - → and . A sample Deep Inelastic events which is two orders larger past samples will also be obtained. As result, unique among present planned experiments its ability probe couplings Beyond Standard Model...
Fermilab is dedicated to hosting world-class experiments in search of new physics that will operate the coming years. The Muon g-2 Experiment one such experiment determine with unprecedented precision muon anomalous magnetic moment, which offers an important test Standard Model. We describe this study accelerator facility deliver a beam experiment. first present lattice design allows for efficient capture, transport, and delivery polarized beams. then numerically examine its performance by...