Electron beam manipulations at the angstrom level and attosecond timescale for X-ray FELs
Abstract/Contents
- Abstract
- X-ray Free-Electron Lasers (FELs) like the Linac Coherent Light Source (LCLS) have now operated for a decade, delivering linearly polarized pulses as short as a few femtoseconds to users. I will discuss two experiments and associated theoretical developments on manipulating the FEL gain medium -- a relativistic electron beam -- in order to extend the capabilities of LCLS. The first is the production of isolated, circularly polarized x-ray pulses with a helical undulator and non-intuitive electron microbunch rotation. The microbunch rotation required for isolating circular pulses is also useful to multiplex LCLS and for outcoupling radiation from cavity-based FELs. The second project is on the production of sub-femtosecond x-ray pulses with a tailored electron beam phase space. We tailor the longitudinal phase space of the electron beam core with coherent radiation from the electron beam tail produced in a magnetic undulator. The resultant x-ray pulses contain six orders of magnitude more energy than otherwise comparable sub-femtosecond x-ray sources. These two projects involved relativistic electron beams interacting with radiation in previously unexplored parameter regimes. We therefore also discuss several theoretical contributions and associated simulation work. In particular, we present an improved understanding of coherent radiation from a kicked electron beam, undulator impedance, reverse tapered undulators, and rest-frame simulation of FELs
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2020; ©2020 |
| Publication date | 2020; 2020 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | MacArthur, James Paton |
|---|---|
| Degree supervisor | Huang, Zhirong, 1968- |
| Thesis advisor | Huang, Zhirong, 1968- |
| Thesis advisor | Bucksbaum, Philip H |
| Thesis advisor | Hastings, Jerome, 1948- |
| Thesis advisor | Reis, David A, 1970- |
| Degree committee member | Bucksbaum, Philip H |
| Degree committee member | Hastings, Jerome, 1948- |
| Degree committee member | Reis, David A, 1970- |
| Associated with | Stanford University, Department of Physics. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | James Paton MacArthur |
|---|---|
| Note | Submitted to the Department of Physics |
| Thesis | Thesis Ph.D. Stanford University 2020 |
| Location | electronic resource |
Access conditions
- Copyright
- © 2020 by James Paton MacArthur
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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