A shutter design for time domain studies using synchrotron radiation at the Advanced Photon Source

J. R. Norris*, M. K. Bowman, L. Chen, J. Tang, M. C. Thurnauer, G. S. Knapp, P. A. Montano

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

In general, a variable repetition rate of the x-ray bunches is needed to explore time domain problems using x-rays. In some instances, the results of several hundreds or thousands of x-ray pulses must be averaged requiring the sample to be in the same time-dependent state each time the monitoring pulse strikes. The important point is that before a second x-ray pulse hits the sample, the system must return to its initial relaxed ground state prior to another spectrum pulse in order to prepare the same excited state again. Our key design principle employs a subsonic, rotating mirror whose period is slaved to the synchrotron intrapulse period. The synchrotron x-ray bunches will be reflected a distance of about 2 m to a narrow 0.5-mm slit just in front of the sample. A mirror rotating at a low 7500 rpm (125 Hz) is sufficient to select a single synchrotron pulse for the Advanced Photon Source. The very precise phase stability required by this method is currently available in rotating mirror devices for laser scanning.

Original languageEnglish (US)
Pages (from-to)1172-1175
Number of pages4
JournalReview of Scientific Instruments
Volume63
Issue number1
DOIs
StatePublished - 1992

ASJC Scopus subject areas

  • Instrumentation

Fingerprint Dive into the research topics of 'A shutter design for time domain studies using synchrotron radiation at the Advanced Photon Source'. Together they form a unique fingerprint.

Cite this