12 November 1993 New dual-purpose photon shutter-slit assembly for high-power beamline front ends at HASYLAB
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Abstract
High power wiggler or undulator beamlines at synchrotron radiation sources need devices that stop or reduce the size of the beam. This paper describes a new photon shutter/slit assembly that takes advantage of the high collimation of the x-ray beam in the vertical direction. In the center of a water-cooled copper block, an opening has been configured that has an aperture of 10 X 120 mm2 with a length of 100 mm. This copper block is rotated around the center of the length axis. There are two modes of operation for the rotation. One mode switches the beam on and off. The other controls the rotation, which results in a variable vertical slit. The angle of this rotation reduces the power density on the cooled surface of the slit by a factor larger than ten.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ulrich Hahn, L. Bittner, M. Hesse, E. W. Weiner, "New dual-purpose photon shutter-slit assembly for high-power beamline front ends at HASYLAB", Proc. SPIE 1997, High Heat Flux Engineering II, (12 November 1993); doi: 10.1117/12.163816; https://doi.org/10.1117/12.163816
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