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Title: Analytical formulas for short bunch wakes in a flat dechirper

Journal Article · · Physical Review Accelerators and Beams
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We develop analytical models of the longitudinal and transverse wakes, on and off axis for a flat, corrugated beam pipe with realistic parameters, and then compare them with numerical calculations, and generally find good agreement. These analytical “first order” formulas approximate the droop at the origin of the longitudinal wake and of the slope of the transverse wakes; they represent an improvement in accuracy over earlier, “zeroth order” formulas. In example calculations for the RadiaBeam/LCLS dechirper using typical parameters, we find a 16% droop in the energy chirp at the bunch tail compared to simpler calculations. As a result, with the beam moved to 200 μm from one jaw in one dechirper section, one can achieve a 3 MV transverse kick differential over a 30 μm length.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1282429
Alternate ID(s):
OSTI ID: 1312652
Journal Information:
Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Vol. 19 Journal Issue: 8; ISSN 2469-9888
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

References (13)

Corrugated pipe as a beam dechirper
  • Bane, K. L. F.; Stupakov, G.
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journal October 2012
Experimental Demonstration of Energy-Chirp Control in Relativistic Electron Bunches Using a Corrugated Pipe journal January 2014
Experimental Demonstration of Longitudinal Beam Phase-Space Linearizer in a Free-Electron Laser Facility by Corrugated Structures journal December 2014
Demonstration of Nonlinear-Energy-Spread Compensation in Relativistic Electron Bunches with Corrugated Structures journal March 2015
Time-resolved measurement of quadrupole wakefields in corrugated structures journal February 2016
Experimental Demonstration of Energy-Chirp Compensation by a Tunable Dielectric-Based Structure journal March 2014
Impedance of a rectangular beam tube with small corrugations journal February 2003
Electron beam energy chirp control with a rectangular corrugated structure at the Linac Coherent Light Source journal January 2015
Wakefield potentials of corrugated structures journal October 2015
Calculation of wakefields in 2D rectangular structures journal October 2015
Using surface impedance for calculating wakefields in flat geometry journal March 2015
Dechirper wakefields for short bunches
  • Bane, Karl; Stupakov, Gennady
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 820 https://doi.org/10.1016/j.nima.2016.02.055
journal June 2016
Longitudinal impedance of a periodic structure at high frequency journal May 1989

Cited By (2)

Generation of coherent two-color pulses at two adjacent harmonics in a seeded free-electron laser journal February 2018
Fresh-slice multicolour X-ray free-electron lasers journal October 2016

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