A5034238833- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Medical Imaging Techniques and Applications
- Nuclear Physics and Applications
- Radiation Therapy and Dosimetry
- Electromagnetic Simulation and Numerical Methods
- Electromagnetic Scattering and Analysis
- Magnetic confinement fusion research
- Numerical methods for differential equations
- Particle Detector Development and Performance
- Atomic and Molecular Physics
- Gyrotron and Vacuum Electronics Research
- Nuclear physics research studies
- Quantum chaos and dynamical systems
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Experimental Learning in Engineering
- Numerical methods in engineering
- Scientific Research and Discoveries
- Plasma Diagnostics and Applications
- Advanced X-ray and CT Imaging
- Particle physics theoretical and experimental studies
- Spectral Theory in Mathematical Physics
- Laser-Plasma Interactions and Diagnostics
Northern Illinois University
2011-2024
Thomas Jefferson National Accelerator Facility
2015
Argonne National Laboratory
2007-2013
University of California, Santa Cruz
2009
University of Wollongong
2009
Loma Linda University Medical Center
2009
Loma Linda University
2009
California State University, San Bernardino
2009
University of Illinois Urbana-Champaign
2002
Fermi National Accelerator Laboratory
2002
A dedicated run of a future electron-positron collider (FCC-ee) at center-of-mass energy equal to the Higgs boson mass would enable direct measurement electron Yukawa coupling. However, it poses substantial experimental difficulties due large backgrounds, requirement for monochromatised $e^+e^-$ beams, and potential extension FCC-ee timeline. Given this, we explore extent which coupling can be enhanced in simplified UV models examine whether such scenarios constrained by other runs or...
This report presents a brief summary of the science opportunities and program polarized medium energy electron-ion collider at Jefferson Lab comprehensive description conceptual design such based on CEBAF electron accelerator facility.
We investigate some generalizations of the most likely path formalism developed for proton-computed tomography. The stochastic a proton inside homogeneous medium is replaced by deterministic smooth that maximizes probability passing through points on this curve, given measured entrance and exit parameters each individual proton. study various factors influence curve associated error envelopes. These are energy loss, logarithmic correction factor in small angle Coulomb scattering importance...
Next-generation high-intensity large acceptance fragment separators require a careful design due to the high order aberrations induced by aperture superconducting magnets needed collect rare isotopes obtained from energy primary heavy-ion beam hitting target. In this paper we propose separator layout based on various symmetries that satisfies baseline requirements. Analytical calculations symmetry theories simplify numerical optimization of basic cell with only few magnetic elements. The...
Recently there has been renewed interest in the influence of fringe fields on particle dynamics, due to studies that revealed their importance some cases, as, for example, proposed Neutrino Factory and muon colliders. In this paper, we present a systematic study generic field effects. Using as an example lattice Factory, show dynamics particles at all orders, starting with linear motion. It is found widely used sharp cutoff approximation leads divergences regardless specific fall-off shape...
Long term simulations of Hamiltonian dynamical systems benefit from enforcing the symplectic symmetry. One several available methods to perform this symplectification is provided by recently developed theory extended generating functions. The offers an infinite supply generator types that can be used for symplectification. Using Hofer's metric, a condition optimal given. In weakly nonlinear case, provides type that, based on limited information system, in general gives results.
Determination of the Bragg peak position in proton therapy requires accurate knowledge electron density and ratio effective atomic number mass (Z/A) body tissues traversed. While Z/A is fairly constant for human tissues, varies significantly. One possibility to obtain information use protons sufficient energy penetrate patient measure their loss. From these transmission measurements, it possible reconstruct a three‐dimensional map densities using algebraic techniques. The interest computed...
Proton Computed Tomography (pCT) is being developed in support of proton therapy and treatment planning. The aim pCT, to reconstruct an accurate map the stopping power (S.P.) a phantom and, future, patients, pursued with diverse list detector systems, using entire arsenal tracking energy detectors for High Energy Physics (HEP). first radiographs 3D images are reconstructed prototype detectors, which will be described. Most existing systems upgraded higher fluxes reduce scanning time.
Computer tomography is one of the most promising new methods to image abnormal tissues inside human body. Tomography also used position patient accurately before radiation therapy. Hadron therapy for treating cancer has become advantegeous and safe options. In order fully utilize advantages hadron therapy, there a necessity performing radiography with hadrons as well. this paper we present development proton computed system. Our second-generation system consists two upstream downstream...
Cooling of muon beams for the next-generation lepton collider is necessary to achieve its higher luminosity with fewer muons. In this paper we present an idea combine ionization cooling parametric resonances that expected lead much smaller transverse sizes. We describe a linear magnetic transport channel where half integer resonance induced such normal elliptical motion particles in x-x' phase space becomes hyperbolic, moving x and larger x' at focal points. Thin absorbers placed points then...
Maintaining a high degree of spatial resolution in proton computed tomography (pCT) is challenge due to the statistical nature path through object. Recent work has focused on formulation most likely (MLP) protons homogeneous water object and accuracy this approach been tested experimentally with PMMA phantom. Inhomogeneities inside phantom, consisting of, for example, air bone will lead unavoidable inaccuracies approach. The purpose ongoing characterize systematic errors that are introduced...
A second order analytical and an arbitrary numerical procedure is developed for the computation of transfer maps energy degraders. The incorporation wedges into optics fragment separators next-generation exotic beam facilities, their optical effects, optimization performance studied in detail. It shown how to place shape degraders system such that aberrations are minimized resolving powers maximized.
Abstract The design optimization and analysis of charged particle beam systems employing intense beams requires a robust accurate Poisson solver. This paper presents new type solver which allows the effects space charge to be elegantly included into system dynamics. is done by casting distribution function series basis functions, are then integrated with an appropriate Green's find Taylor potential at given point within desired region. In order avoid singularities, Duffy transformation...
In classical electrodynamics, the well-known Lorentz force law falls short of providing a satisfactory result for trajectory point-like charged particles when considering that particle’s own self-force. While there have been many historical attempts, Gralla, Harte and Wald developed new model is free from pathologies while being consistent with Maxwell’s equations conserves stress-energy. Expanding upon this approach, we derive relativistically correct, modified in vector form, which...