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http://hdl.handle.net/1903/8121
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| Title: | TOMOGRAPHIC MEASUREMENT OF THE PHASE-SPACE DISTRIBUTION OF A SPACE-CHARGE-DOMINATED BEAM |
| Authors: | Stratakis, Diktys |
| Advisors: | O'Shea, Patrick G
Kishek, Rami A |
| Department/Program: | Electrical Engineering |
| Type: | Dissertation |
| Sponsors: | Digital Repository at the University of Maryland
University of Maryland (College Park, Md.) |
| Keywords: | 0544
Engineering, Electronics and Electrical
0759
Physics, Fluid and Plasma
0607
Physics, Electricity and Magnetism
University of Maryland Electron Ring; accelerators; beam; space charge; electron optics; phase-space tomography |
| Issue Date: | 24-Apr-2008 |
| Abstract: | Many applications of accelerators, such as free electron lasers, pulsed neutron sources, and heavy ion fusion, require a good quality beam with high intensity. In practice, the achievable intensity is often limited by the dynamics at the low-energy, space-charge dominated end of the machine. Because low-energy beams can have complex distribution functions, a good understanding of their detailed evolution is needed. To address this issue, we have developed a simple and accurate tomographic method to map the beam phase using quadrupole magnets, which includes the effects from space charge. We extend this technique to use also solenoidal magnets which are commonly used at low energies, especially in photoinjectors, thus making the diagnostic applicable to most machines. We simulate our technique using a particle in cell code (PIC), to ascertain accuracy of the reconstruction. Using this diagnostic we report a number of experiments to study and optimize injection, transport and accelerati... |
| URI: | http://hdl.handle.net/1903/8121 |
| Appears in Collections: | Electrical & Computer Engineering Theses and Dissertations
UM Theses and Dissertations
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Size | Format | No. of Downloads |
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| umi-umd-5291.pdf | | 10584Kb | Adobe PDF | 38 | View/Open |
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