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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 17 of 17 for “"Beam transport"”.
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Charged particle beam transport for a cyclotron facility
… and systems to be used in the design of beamlines for charged particle beam transport. A few of these refer specifically to beamlines to or from a cyclotron, while others may be used in beamlines from any accelerator. In the former category, we develop a method for determining the …
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Relativistic electron beam transport for fast ignition relevant scenarios
… Energy transfer will involve the generation and transport of a relativistic electron beam, which may be subject to a number of instabilities such as the two-stream, Weibel, and filamentary instabilities that act to inhibit energy transport. This research addressed these issues by investigating …
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Application of Chebyshev Formalism to Identify Nonlinear Magnetic Field Components in Beam Transport System
… conducted at Jefferson Lab's Continuous Electron Beam Accelerator Facility to develop a beam-based technique for characterizing the extent of the nonlinearity of the magnetic fields of a beam transport system. Horizontally and vertically oriented pairs of air-core kicker magnets were …
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Design and realization of a beam transport line for handling and selecting laser-driven ion beams for multidisciplinary applications
… to 10 Hz) which are about to be available at ELI-Beamlines (Dolní Břežany, Czech Republic). As an example of possible advantages of a laser-based approach, transporting the laser pulse to the treatment rooms to generate the ion source closer to the patient would drastically reduce costs related …
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Design and optimization of a multi-particle accelerator beam transport and delivery system for material irradiation in nuclear and fusion science
A beam delivery and transport system were designed for the use in MIT Materials Test Facility (M2TF). The purpose of this beam delivery system was to design a 36 MeV Proton Cyclotron for DPA accumulation and a 100 MeV Helium Cyclotron for irradiation failure and volumetric helium accumulation …
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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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generation and transport of high-current relativistic electron beams in high intensity laser-solid interactions
In this thesis, the generation and transport of ultra-high intensity laser-driven relativistic electron beams in overdense plasma is investigated experimentally and numerically. The fast electron beam is experimentally diagnosed by means of a 2D Cu Kα imager and the TNSA-generated proton beam. …
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Effects of electrical resistivity on fast electron transport in relativistic laser-solid interactions
… investigations of relativistic electron transport in solids irradiated by intense (i.e. IL > 10¹⁹ Wcm⁻²) laser pulses. Specifically, the effect of electrical resistivity on fast electron transport is explored. The first investigation explores fast electron transport in allotropes of …
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Towards a free-electron laser driven by a laser wakefield accelerator
… radiation that currently demands kilometre-scale beam lines for high-energy vacuum ultraviolet (VUV) and X-ray output. Driving an FEL with a laser wakefield accelerator (LWFA) electron beam would radically reduce the size of such systems as well as delivering ultra-short duration radiation pulses. …
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Measurement of a weak polarization sensitivity to the beam orbit of the CEBAF accelerator
… to investigate a predicted sensitivity of the beam polarization to the vertical betatron orbit in the recirculation arcs. This is the first measurement of any such effect at CEBAF, and provides information about the polarized beam delivery performance of the accelerator. A brief description of …
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Neutron flux characterization of the Kansas State University TRIGA Mark II’s Northeast Beam Port
… State University TRIGA Mark II’s Northeast Beam Port for the purpose of informing future experimental work, such as detector characterization, done using the beam. First, the Beam Port geometry was added to the existing reactor model. Then the in-core fission rates were tallied using MCNP to …
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Experimental measurements and Monte Carlo simulations of a transport beamline for laser-driven proton beams
… to a larger availability of high-energy ion beams around the world. Up to now, optically accelerated ion beams are characterised by extreme features, not suitable for many applications and of course also for the hadrontherapy applications, that are the most demanding in terms of beam …
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High quality high current ion beam generation and transport systems including plasma-based space charge neutraliser
This thesis discusses the development of an ion beam generation and transport system for the purpose of high current ion implantation and presents a method toachieve high quality beam generation and high transport efficiency. An advanced method of achieving ideal space charge neutralization of an …
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Measurements of FEL dynamics
… that the gain medium—the relativistic electron beam—can be probed immediately following its interaction with the optical field in the laser cavity. The system permits real-time calculation and graphical display of key beam parameters as well as the archiving of raw data, and has been used to …
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Investigation of Microbunching Instabilities in Modern Recirculating Accelerators
… to accelerate and store charged particle beams, such as electrons or protons, to the energy levels for various scientific applications. There are three basic types of particle accelerators: linear accelerators (linac), storage-ring (or circular) accelerators, and recirculating …
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Beam emittance measurements in the SPC2 injection beamline at iThemba LABS
Beam emittance is a property of a charged particle beam in a particle accelerator that is used to estimate the beam quality. It is length-based measure of the average spread of particle coordinates in position and momentum phase space. This attribute makes emittance a crucial beam parameter that …