Author: Chen, S.D.
Paper Title Page
THPMK012 Reduction of Dynamic Multipole Content in Insertion Devices Using Flat Wires 4313
  • T.Y. Chung, S.D. Chen, M.-S. Chiu, S.J. Huang, C.-S. Hwang, J.C. Jan, C.Y. Kuo, Y.T. Li, C.Y. Wu
    NSRRC, Hsinchu, Taiwan
  • C.-S. Hwang
    NCTU, Hsinchu, Taiwan
  Multipole errors of an insertion device are generally corrected based on measurements and analysis of the magnetic field integrals. Multipole components in a strong and narrow non-uniform field of an insertion device appear as dynamic multipoles. Flat wires were installed and commissioned to determine if the dynamic multipoles can be eliminated in an APPLE-II type undulator. In this work, we will discuss and compare the reduction of the dynamic multipole content and it's beam dynamics effects with the flat wire through an analysis of field calculations and beam-based measurements in the storage ring.  
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