Analytical formulas for short bunch wakes in a flat dechirper
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.
 Authors:

^{[1]};
^{[1]};
^{[2]}
 SLAC National Accelerator Lab., Menlo Park, CA (United States)
 Deutsches ElectronenSynchrotron, Hamburg (Germany)
 Publication Date:
 Grant/Contract Number:
 AC0276SF00515
 Type:
 Published Article
 Journal Name:
 Physical Review Accelerators and Beams (Online)
 Additional Journal Information:
 Journal Name: Physical Review Accelerators and Beams (Online); Journal Volume: 19; Journal Issue: 8; Journal ID: ISSN 24699888
 Publisher:
 American Physical Society (APS)
 Research Org:
 SLAC National Accelerator Lab., Menlo Park, CA (United States)
 Sponsoring Org:
 USDOE
 Country of Publication:
 United States
 Language:
 English
 Subject:
 47 OTHER INSTRUMENTATION
 OSTI Identifier:
 1282429
 Alternate Identifier(s):
 OSTI ID: 1312652
Bane, Karl, Stupakov, Gennady, and Zagorodnov, Igor. Analytical formulas for short bunch wakes in a flat dechirper. United States: N. p.,
Web. doi:10.1103/PhysRevAccelBeams.19.084401.
Bane, Karl, Stupakov, Gennady, & Zagorodnov, Igor. Analytical formulas for short bunch wakes in a flat dechirper. United States. doi:10.1103/PhysRevAccelBeams.19.084401.
Bane, Karl, Stupakov, Gennady, and Zagorodnov, Igor. 2016.
"Analytical formulas for short bunch wakes in a flat dechirper". United States.
doi:10.1103/PhysRevAccelBeams.19.084401.
@article{osti_1282429,
title = {Analytical formulas for short bunch wakes in a flat dechirper},
author = {Bane, Karl and Stupakov, Gennady and Zagorodnov, Igor},
abstractNote = {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.},
doi = {10.1103/PhysRevAccelBeams.19.084401},
journal = {Physical Review Accelerators and Beams (Online)},
number = 8,
volume = 19,
place = {United States},
year = {2016},
month = {8}
}