Author: Mok, W.Y.
Paper Title Page
TUPG031 Optical Synchrotron Radiation Beam Imaging with a Digital Mask 201
 
  • R.B. Fiorito, A.G. Shkvarunets, H.D. Zhang
    UMD, College Park, Maryland, USA
  • W.J. Corbett, A.S. Fisher, W.Y. Mok, K. Tian
    SLAC, Menlo Park, California, USA
  • D. Douglas, F.G. Wilson, S. Zhang
    JLAB, Newport News, Virginia, USA
  • T.M. Mitsuhashi
    KEK, Ibaraki, Japan
 
  Funding: This work is partially supported by the Office of Naval Research and the DOD Joint Technology Office.
We have applied a new imaging/optical masking technique, which employs a digital micro-mirror device (DMD) and optical synchrotron radiation (OSR), to perform high dynamic range (DR) beam imaging at the JLAB Energy Recovery Linac and the SLAC/SPEAR3 Synchrotron Light Source. The OSR from the beam is first focused onto the DMD to produce a primary image; selected areas of this image are spatially filtered by controlling the state of individual micro-mirrors; and finally, the filtered image is refocused onto a CCD camera. At JLAB this technique has been used successfully to view the beam halo with a DR ~ 105. At SPEAR3 the DMD was used to filter out the bright core of the stored beam to study the turn-by-turn dynamics of the 10-3 weaker injected beam. We describe the optical performance, present limitations and our plans to improve the DR of both experimental systems.
 
poster icon Poster TUPG031 [4.164 MB]