Paper |
Title |
Page |
MOPIK055 |
Beam by Design: Current Pulse Shaping Through Longitudinal Dispersion Control |
644 |
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- T.K. Charles, D.M. Paganin
Monash University, Faculty of Science, Clayton, Victoria, Australia
- M.J. Boland
The University of Melbourne, Melbourne, Victoria, Australia
- M.J. Boland, R.T. Dowd
SLSA, Clayton, Australia
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Electron beams traversing a dispersive region, such as a bunch compressor and some transport line can form caustic lines and surfaces corresponding to regions of maximum electron density, which influence the current pulse shape. In this paper, we present a technique to manipulate the longitudinal phase space distribution to achieve an arbitrary, desired current pulse shape. We show how sextupole magnets (and in certain circumstances, octupole magnets), placed within a dispersive region can be used to generate the conditions required for a flexible technique of current pulse shaping that avoids truncation through collimation.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-MOPIK055
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THPAB001 |
Microbunching Instability as a Caustic Phenomenon |
3676 |
SUSPSIK053 |
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- T.K. Charles, D.M. Paganin
Monash University, Faculty of Science, Clayton, Victoria, Australia
- M.J. Boland
The University of Melbourne, Melbourne, Victoria, Australia
- M.J. Boland, R.T. Dowd
SLSA, Clayton, Australia
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Microbunching instability if left alone, threatens to degrade the beam quality of high brightness electron beams in Free Electron Lasers. Recently, caustic formation in electron trajectories was identified as a mechanism describing current modulations in accelerated particle beams. Here we consider CSR-induced microbunching as a caustic phenomenon. This analysis reports on the influence of longitudinal dispersion, R56, on the microbunching process, as well as elucidating the influence of the second and third order longitudinal dispersion values, T566 and U5666.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-THPAB001
|
|
Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
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