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Proceedings Paper

Rotating crystal cube as a variable shutter for use with synchrotron radiation
Author(s): Armon McPherson; Wah Keat Lee; Dennis M. Mills
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Paper Abstract

A beam chopper together with the temporal structure of x-rays emitted by a synchrotron storage ring can be utilized to generate x-ray bursts of variable length and time separation. A Si cube, cut for diffraction from the (220) planes, was mounted to a low-speed motor to produce a beam chopper based upon the Darwin width of the crystal. An x-ray pulse, consisting of an envelope of individual pulses characterizing the loading pattern of the storage ring, was transmitted. The width of the transmitted pulse and the time between pulses was varied by varying the rotation frequency of the Si cube. Pulses as short as approximately equal 75 ps or as long as approximately equal 4 microseconds were transmitted with pulse separation spanning from 4 ms to 167 ms.

Paper Details

Date Published: 1 December 1998
PDF: 6 pages
Proc. SPIE 3451, Time Structure of X-Ray Sources and Its Applications, (1 December 1998); doi: 10.1117/12.331843
Show Author Affiliations
Armon McPherson, Argonne National Lab. (United States)
Wah Keat Lee, Argonne National Lab. (United States)
Dennis M. Mills, Argonne National Lab. (United States)

Published in SPIE Proceedings Vol. 3451:
Time Structure of X-Ray Sources and Its Applications
Andreas K. Freund; Henry P. Freund; Malcolm R. Howells, Editor(s)

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