Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source
Abstract
The RadiaBeam/SLAC dechirper, a structure consisting of pairs of flat, metallic, corrugated plates, has been installed just upstream of the undulators in the Linac Coherent Light Source (LCLS). As a dechirper, with the beam passing between the plates on axis, longitudinal wakefields are induced that can remove unwanted energy chirp in the beam. However, with the beam passing off axis, strong transverse wakes are also induced. This mode of operation has already been used for the production of intense, multicolor photon beams using the fresh-slice technique, and is being used to develop a diagnostic for attosecond bunch length measurements. Here we measure, as a function of offset, the strength of the transverse wakefields that are excited between the two plates, and also for the case of the beam passing near to a single plate. We compare with analytical formulas from the literature, and find good agreement. As a result, this report presents the first systematic measurements of the transverse wake strength in a dechirper, one that has been excited by a bunch with the short pulse duration and high energy found in an x-ray free electron laser.
- Authors:
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1400341
- Alternate Identifier(s):
- OSTI ID: 1417670
- Grant/Contract Number:
- AC02-76SF00515; SC0009550
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Accelerators and Beams
- Additional Journal Information:
- Journal Name: Physical Review Accelerators and Beams Journal Volume: 20 Journal Issue: 10; Journal ID: ISSN 2469-9888
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS
Citation Formats
Zemella, Johann, Bane, Karl, Fisher, Alan, Guetg, Marc, Huang, Zhirong, Iverson, Richard, Krejcik, Patrick, Lutman, Alberto, Maxwell, Timothy, Novokhatski, Alexander, Stupakov, Gennady, Zhang, Zhen, Harrison, Mark, and Ruelas, Marcos. Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source. United States: N. p., 2017.
Web. doi:10.1103/PhysRevAccelBeams.20.104403.
Zemella, Johann, Bane, Karl, Fisher, Alan, Guetg, Marc, Huang, Zhirong, Iverson, Richard, Krejcik, Patrick, Lutman, Alberto, Maxwell, Timothy, Novokhatski, Alexander, Stupakov, Gennady, Zhang, Zhen, Harrison, Mark, & Ruelas, Marcos. Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source. United States. https://doi.org/10.1103/PhysRevAccelBeams.20.104403
Zemella, Johann, Bane, Karl, Fisher, Alan, Guetg, Marc, Huang, Zhirong, Iverson, Richard, Krejcik, Patrick, Lutman, Alberto, Maxwell, Timothy, Novokhatski, Alexander, Stupakov, Gennady, Zhang, Zhen, Harrison, Mark, and Ruelas, Marcos. Thu .
"Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source". United States. https://doi.org/10.1103/PhysRevAccelBeams.20.104403.
@article{osti_1400341,
title = {Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source},
author = {Zemella, Johann and Bane, Karl and Fisher, Alan and Guetg, Marc and Huang, Zhirong and Iverson, Richard and Krejcik, Patrick and Lutman, Alberto and Maxwell, Timothy and Novokhatski, Alexander and Stupakov, Gennady and Zhang, Zhen and Harrison, Mark and Ruelas, Marcos},
abstractNote = {The RadiaBeam/SLAC dechirper, a structure consisting of pairs of flat, metallic, corrugated plates, has been installed just upstream of the undulators in the Linac Coherent Light Source (LCLS). As a dechirper, with the beam passing between the plates on axis, longitudinal wakefields are induced that can remove unwanted energy chirp in the beam. However, with the beam passing off axis, strong transverse wakes are also induced. This mode of operation has already been used for the production of intense, multicolor photon beams using the fresh-slice technique, and is being used to develop a diagnostic for attosecond bunch length measurements. Here we measure, as a function of offset, the strength of the transverse wakefields that are excited between the two plates, and also for the case of the beam passing near to a single plate. We compare with analytical formulas from the literature, and find good agreement. As a result, this report presents the first systematic measurements of the transverse wake strength in a dechirper, one that has been excited by a bunch with the short pulse duration and high energy found in an x-ray free electron laser.},
doi = {10.1103/PhysRevAccelBeams.20.104403},
journal = {Physical Review Accelerators and Beams},
number = 10,
volume = 20,
place = {United States},
year = {2017},
month = {10}
}
https://doi.org/10.1103/PhysRevAccelBeams.20.104403
Web of Science
Figures / Tables:

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Works referencing / citing this record:
Generation of coherent two-color pulses at two adjacent harmonics in a seeded free-electron laser
journal, February 2018
- Zhao, Zhouyu; Li, Heting; Jia, Qika
- Physical Review Accelerators and Beams, Vol. 21, Issue 2
Generation of coherent two-color pulses at two adjacent harmonics in a seeded free-electron laser
journal, February 2018
- Zhao, Zhouyu; Li, Heting; Jia, Qika
- Physical Review Accelerators and Beams, Vol. 21, Issue 2
Measurements of electron beam deflection and rf breakdown rate from a surface wave guided in metallic mm-wave accelerating structures
journal, September 2018
- Dal Forno, Massimo; Dolgashev, Valery; Bowden, Gordon
- Physical Review Accelerators and Beams, Vol. 21, Issue 9
Figures / Tables found in this record: