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Rosenbaum, G.

Paper Title Page
FRPMN106 Progress toward a Hard X-ray Insertion Device Beam Position Monitor at the Advanced Photon Source 4342
  • G. Decker, P. K. Den Hartog, O. Singh
    ANL, Argonne, Illinois
  • G. Rosenbaum
    UGA, Athens, Georgia
  Funding: Work supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.

Long-term pointing stability at synchrotron light sources using conventional rf-based particle beam position monitoring is limited by the mechanical stability of the pickup electrode assembly. Photoemission-based photon beam position monitors for insertion device beams suffer from stray radiation backgrounds and other gap-dependent systematic errors. To achieve the goal of 500-nanoradian peak-to-peak pointing stability over a one-week period, the development of a photon beam position detector sensitive only to hard x-rays (> several keV) using copper x-ray fluorescence has been initiated. Initial results and future plans are presented.