Author: Jing, Y.C.
Paper Title Page
PLT04
 ERL Requirements for X-ray Optics-Free FEL Oscillator  
 
  • V. Litvinenko, J. Bengtsson, Y. Hao, Y.C. Jing, D. Kayran, D. Trbojevic
    BNL, Upton, Long Island, New York, USA
  
  We present a comprehensive list of requirements for ERLs required for X-ray FEL oscillator. We discuss both the main ERL driving a high-gain FEL amplifier as well as ERL generating a feed-back electron beam. A scheme where a third ERL is used to generate a TEM-wiggler field used in the feed-back is also presented.  
slides icon Slides PLT04 [2.058 MB]  
 
WG202
 Beam Dynamics and CSR Suppression in an ERL-driven X-ray FEL  
 
  • V. Litvinenko, Y. Hao, Y.C. Jing
    BNL, Upton, Long Island, New York, USA
  
  In this talk we present a self-consistent concept of ERL generated e-beam to drive an array of X-ray FELs. We use eRHIC multi-pass ERL design to explore all relevant beam dynamics. First, we study effects of incoherent and coherent synchrotron radiation on the e-beam parameters and present the set of parameters providing for the emittance preservation. Second, we present a sing bunch compressing scheme (similar to scheme described in *) with large compression ratio, which suppresses emittance growth caused by CSR. Finally, we present simulation result for soft- and hard-X-ray FELs driven by such electron beam. We compare projected performance of such facility with world's existing and proposed FEL facilities.
* Merger Designs for ERLs, V.N. Litvinenko, R.Hajima, D. Kayran, Nuclear Instruments and Methods in Physics Research A 557 (2006) 165 		 
slides icon Slides WG202 [0.972 MB]