Author: Ringwall, A.
Paper Title Page
TUPRB101 Damping Trapped Modes in an in-Vacuum Undulator at a Synchrotron Radiation Light Source 1895
TUPRB098   use link to see paper's listing under its alternate paper code  
 
  • K. Tian, Z. Li, A. Ringwall, J.J. Sebek
    SLAC, Menlo Park, California, USA
 
  Funding: Work supported by US Department of Energy Contract DE-AC03-76SF00515.
In this paper, we report the efforts in solving the problem of coupled-bunch instabilities caused by an in-vacuum undulator in the SPEAR3 storage ring. After exploring several approaches to reduce the strength of the trapped modes, we found that ferrite dampers were the most effective and simplest way for mode damping in our SPEAR3 in-vacuum undulator. The results of the first RF cold measurement on an in-vacuum undulator equipped with these ferrite dampers agree well with numerical simulations.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-TUPRB101  
About • paper received ※ 13 May 2019       paper accepted ※ 20 May 2019       issue date ※ 21 June 2019  
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