Progress on the study of self-interaction of a bunch in a bend

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When a short (mm-length) bunch with high (nC-regime) charge is transported through a magnetic bending system, self-interaction via coherent synchrotron radiation and space charge may cause emittance growth. Earlier the authors studied analytically the shielded transient self-interaction of a rigid-line bunch entering from a straight path to a circular orbit, and estimated the concomitant emittance degradation in parts of Jefferson Lab`s infrared free-electron laser (IR-FEL). In this paper, they generalize their earlier results by calculating the curvature-induced steady-state longitudinal wakefield on particles with transverse offsets from the design orbit. Recent progress in developing a self-consistent simulation are also presented.

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3 p.

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Li, R.; Bohm, C.L. & Bisognano, J.J. December 31, 1997.

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When a short (mm-length) bunch with high (nC-regime) charge is transported through a magnetic bending system, self-interaction via coherent synchrotron radiation and space charge may cause emittance growth. Earlier the authors studied analytically the shielded transient self-interaction of a rigid-line bunch entering from a straight path to a circular orbit, and estimated the concomitant emittance degradation in parts of Jefferson Lab`s infrared free-electron laser (IR-FEL). In this paper, they generalize their earlier results by calculating the curvature-induced steady-state longitudinal wakefield on particles with transverse offsets from the design orbit. Recent progress in developing a self-consistent simulation are also presented.

Physical Description

3 p.

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INIS; OSTI as DE98000778

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  • FEL `97: international free electron laser conference and 4. free electron laser users` workshop, Beijing (China), 18-22 Aug 1997

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  • Other: DE98000778
  • Report No.: DOE/ER/40150--1172
  • Report No.: JLAB-ACP--97-10;CONF-970885--
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 576062
  • Archival Resource Key: ark:/67531/metadc692144

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  • December 31, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 17, 2017, 6:18 p.m.

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Li, R.; Bohm, C.L. & Bisognano, J.J. Progress on the study of self-interaction of a bunch in a bend, article, December 31, 1997; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc692144/: accessed May 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.