Author: Grimmer, J.H.
Paper Title Page
WEPSM10 Design of a 17.2-mm-Period Planar Undulator for the APS 1067
 
  • E.R. Moog, M. Abliz, R.J. Dejus, J.H. Grimmer, M.S. Jaski
    ANL, Argonne, USA
 
  Funding: * Work supported by U.S. Department of Energy, Office of Science, under contract number DE-AC02-06CH11357.
The design process for a short-period planar undulator is described. This is a conventional planar design based on Nd-Fe-B magnets and vanadium permendur poles. The period length was driven by the users’ request for a high flux of photons at 23.7 keV, with minimal tuning range. A shorter period gives higher flux; 17.2 mm was the shortest value consistent with the gap limitations of the vacuum chamber and with reaching the desired photon energy. Details of the design, especially the various chamfers of edges of the magnet and pole, were examined more closely than has been the standard past practice in order to minimize the period length.