Much ado about microbunching : coherent bunching in high brightness electron beams
Abstract/Contents
- Abstract
- The push to provide ever brighter coherent radiation sources has led to the creation of correspondingly bright electron beams. With billions of electrons packed into normalized emittances (phase space) below one micron, collective effects may dominate both the preservation and use of such ultra-bright beams. An important class of collective effects is due to density modulations within the bunch, or microbunching. Microbunching may be deleterious, as in the case of the Mi- crobunching Instability (MBI), or it may drive radiation sources of unprecedented intensity, as in the case of Free Electron Lasers (FELs). In this work we begin by describing models of microbunching due to inherent beam shot noise, which sparks both the MBI as well as SLAC's Linac Coherent Light Source, the world's first hard X-ray laser. We first use this model to propose a mechanism for reducing the inherent beam shot noise as well as for predicting MBI effects. We then describe experimental measurements of the resulting microbunching at LCLS, including optical radiation from the MBI, as well as the first gain length and harmonic measurements from a hard X-ray FEL. In the final chapters, we describe schemes that use external laser modulations to microbunch light sources of the future. In these sections we describe coherent light source schemes for both both linacs and storage rings.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2011 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Ratner, Daniel F | |
|---|---|---|
| Associated with | Stanford University, Department of Applied Physics | |
| Primary advisor | Chao, Alexander Wu | |
| Primary advisor | Shen, Zhi-Xun | |
| Thesis advisor | Chao, Alexander Wu | |
| Thesis advisor | Shen, Zhi-Xun | |
| Thesis advisor | Galayda, John N. (John Nicolas), 1948- | |
| Advisor | Galayda, John N. (John Nicolas), 1948- |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Daniel Ratner. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2011. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2011 by Daniel Fried Ratner
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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