Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"Beam Dynamics"”.
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Beam Dynamics Challenges in the Muon g-2 Experiment
… muons. This thesis presents a selection of muon beam dynamics effects which are critical for reaching the experiment precision goal. A system of detectors assists with the challenging beam injection into the storage ring, and a measurement of the injected beam provides input for simulating the …
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Electron beam dynamics for the ISIS bremsstrahlung beam generation system
An electron beam transport system was designed for use in the Bremsstrahlung Beam Generation System of the Integrated Stand-off Inspection System (ISIS). The purpose of this electron transport system was to provide for electron beam diagnostics and energy selection while also positioning the …
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The Beam Dynamics And Beam Related Uncertainties In Fermilab Muon G-2 Experiment
… uncertainties. In this work, we focus on the beam dynamics and beam associated uncertainties, which are important and must be better understood. We will discuss the electrostatic quadrupole system, particularly the hardware-related quad plate alignment and the quad extension and readout …
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Experiments in vibro-impact beam dynamics and a system exhibiting a landau-zener quantum effect
… the model of a system comprised of a cantilever beam bilaterally constrained at the tip where the spacing between the beam and the stop was varied. The purpose of this work was to model the system, simulate it, and validate the numerical results with experimental data. It is important to mention …
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Compensation Techniques in Accelerator Physics
… multidisciplinary fields of physics, wherein the dynamics of particle beams is studied. It takes more than the understanding of basic electromagnetic interactions to be able to predict the beam dynamics, and to be able to develop new techniques to produce, maintain and deliver high quality beams …
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Efficient Machine Learning Approach for Optimizing Scientific Computing Applications on Emerging HPC Architectures
… step. Numerical simulation of charged particles beam dynamics is one such application where the distribution of work and memory access pattern at each time step is irregular. Applications with these properties tend to present significant branch and memory divergence, load imbalance between …
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Generation, transport and focusing of high-brightness heavy ion beams
… NTX is the first successful integrated beam system experiment that explores various physical phenomena, and determines the final spot size of a high intensity ion beam on a scaled version of a Heavy Ion Fusion driver. The final spot size is determined by the conditions of the beam …
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Tailoring the Geometry of Micron Scale Resonators to Overcome Viscous Damping
… of the mechanical oscillations of micron scale beams in a viscous fluid, such as water, is an open challenge of direct relevance to the development of future technologies. We study the stochastic dynamics of doubly-clamped micron scale beams in a viscous fluid driven by Brownian motion. We use a …
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Normal Mode Analysis Of Single Bunch, Charge Density Dependent Behavior In Electron/Positron Beams
… Under these conditions, single-particle dynamics are not a sufficient description of beam behavior and interactions between the beam particles must be taken into account. One such interaction is when collisions between the particles that compose a bunch perturb the motion of the colliding …
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Microwave accelerating structures: an innovative parallel coupled electron LINAC
… to decoupled propagation axes for RF power and beam it is possible to increase the structure shunt impedance without affecting the cell to cell coupling, combining the advantages of travelling and standing wave structures. Besides in case of a breakdown only the energy stored in one cell is …
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Crabbing System for an Electron-Ion Collider
… need, not only to increase the colliding beams’ energies, but also to improve the accuracy of the experiments, and to collect a large quantity of events with good statistical sensitivity. To achieve the latter, it is necessary to collect more data by increasing the rate at which these pro- …
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TRANSVERSE CHARACTERIZATION AND CONTROL OF BEAMS WITH SPACE CHARGE
… of the transverse phase space of beams is a fundamental requirement for particle accelerators. As accelerators shift toward higher intensity beam regimes, the transverse dynamics of beams becomes more influenced by interparticle forces known as the space charge forces. Therefore, …
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Dynamics of Small Elastic Systems in Fluid: Tension and Nonlinearity
… systems including cantilevers and doubly clamped beams. Building on these advances, this work extends the theory of doubly clamped beams with an arbitrary amount of tension. Both the driven and stochastic dynamics of a doubly clamped beam are explored. The driven dynamics are investigated for a …
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Magnetostatic Modelling and Measurement for Particle Dynamics of a Magnetic Energy Filter
… to selectively filter low-energy electrons from beams produced by electron sources. Two electron source configurations—based on a direct current (DC) 0.5 MeV electron gun and a 3.5 MeV radio frequency (RF) electron gun available at the Canadian Light Source (CLS) test laboratory—were examined. …
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Two topics in particle accelerator beams: Vlasov-Maxwell treatment of coherent synchrotron radiation and topological treatment of spin polarization
… code. The Vlasov-Maxwell system models electron beams, typically in synchrotron light sources. In the second part I present results from my studies of the dynamics of spin polarized beams. Here the emphasis is on improvements of the theoretical basis of beam simulations by using topological …
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Coherence Control and Measurement at the CLS Using X-ray Interferometry
… and coherence, emerging challenges arise in beam diagnostic tools that accurately monitor and control the spatial degree of coherence. MBA lattice designs in modern fourth generation light sources significantly reduce the transverse beam size, posing challenges for beam monitoring due to …
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Vibration and Aeroelasticity of Advanced Aircraft Wings Modeled as Thin-Walled Beams--Dynamics, Stability and Control
… on a refined analytical anisotropic thin-walled beam model, aeroelastic instability, dynamic aeroelastic response, active/passive aeroelastic control of advanced aircraft wings modeled as thin-walled beams are systematically addressed. The refined thin-walled beam model is based on an existing …