Rotating crystal cube as a variable shutter for use with synchrotron radiation

Armon McPherson; Wah Keat Lee; Dennis M. Mills

doi:10.1117/12.331843

1 December 1998 Rotating crystal cube as a variable shutter for use with synchrotron radiation

Armon McPherson, Wah Keat Lee, Dennis M. Mills

Proceedings Volume 3451, Time Structure of X-Ray Sources and Its Applications; (1998) https://doi.org/10.1117/12.331843
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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.

Citation Download Citation

Armon McPherson, Wah Keat Lee, and Dennis M. Mills "Rotating crystal cube as a variable shutter for use with synchrotron radiation", Proc. SPIE 3451, Time Structure of X-Ray Sources and Its Applications, (1 December 1998); https://doi.org/10.1117/12.331843

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