Wakefields in the LCLS Undulator Transitions

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For a short bunch in an elliptical collimator we demonstrate that, as in a purely round collimator, the wake can be estimated from the primary fields of the beam alone. We obtain the wakes in the LCLS rectangular-to-round, undulator transitions using a hybrid method that includes indirect numerical (field) integration and an analytical potential energy term. For the LCLS 1 nC bunch charge configuration, we find the wake-induced energy change in the transitions to be small compared to that due to the resistance of the beam pipe walls.

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4 pages

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Bane, K.L.F.; /SLAC; Zagorodov, I. & /DESY July 17, 2006.

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For a short bunch in an elliptical collimator we demonstrate that, as in a purely round collimator, the wake can be estimated from the primary fields of the beam alone. We obtain the wakes in the LCLS rectangular-to-round, undulator transitions using a hybrid method that includes indirect numerical (field) integration and an analytical potential energy term. For the LCLS 1 nC bunch charge configuration, we find the wake-induced energy change in the transitions to be small compared to that due to the resistance of the beam pipe walls.

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4 pages

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  • Presented at European Particle Accelerator Conference (EPAC 06), Edinburgh, Scotland, 26-30 Jun 2006

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  • Report No.: SLAC-PUB-11937
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 887078
  • Archival Resource Key: ark:/67531/metadc885919

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  • July 17, 2006

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 2, 2016, 6:16 p.m.

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Bane, K.L.F.; /SLAC; Zagorodov, I. & /DESY. Wakefields in the LCLS Undulator Transitions, article, July 17, 2006; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc885919/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.