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Title: CSR induced microbunching gain estimation including transient effects in transport and recirculation arcs

The coherent synchrotron radiation (CSR) of a high brightness electron beam traversing a series of dipoles, such as transport or recirculation arcs, may result in the microbunching instability (μBI). To accurately quantify the direct consequence of this effect, we further extend our previously developed semi-analytical Vlasov solver to include more relevant coherent radiation models than the steady-state free-space CSR impedance, such as the entrance and exit transient effects derived from upstream beam entering to and exiting from individual dipoles. The resultant microbunching gain functions and spectra for our example lattices are presented and compared with particle tracking simulation. Some underlying physics with inclusion of these effects are also discussed.
Authors:
 [1] ;  [2] ;  [2]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Jefferson Lab., Newport News, VA (United States)
  2. Jefferson Lab., Newport News, VA (United States)
Publication Date:
OSTI Identifier:
1221909
Report Number(s):
JLAB-ACP--15-2076; DOE/OR/23177--3431
TRN: US1601458
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: IPAC 2015, Richmond, VA (United States), 3-8 May 2015
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ELECTRON BEAMS; GAIN; SYNCHROTRON RADIATION; COHERENT RADIATION; BEAM BUNCHING; DIPOLES; TRANSIENTS; BEAM TRANSPORT; FUNCTIONS; INSTABILITY; SIMULATION; SPECTRA; BEAM DYNAMICS; MATHEMATICAL MODELS; BEAM FOCUSING MAGNETS