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Emittance, brilliance, and bandpass issues related to an inclined crystal monochromator

Author: Macrander, A.T.; Cowan, P.L.; Haeffner, D.R.; Argonne National Lab.; United States. Department of Energy.; United States. Department of Energy. Office of Scientific and Technical Information.
Publisher: Washington, D.C. : United States. Dept. of Energy ; Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1992.
Edition/Format:   eBook : Document : Conference publication : National government publication : EnglishView all editions and formats
Database:WorldCat
Summary:
The inclined double crystal monochromator arrangement is very effective in handling high heat loads and holds considerable promise as a monochromator for undulator beams at third generation synchrotrons. Results for the ideal inclined crystal case have been obtained by dynamical diffraction calculations, and diffraction results for the (111) reflection of silicon are presented for an inclination angle of 85°0 and  Read more...
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Material Type: Conference publication, Document, Government publication, National government publication, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Macrander, A.T.; Cowan, P.L.; Haeffner, D.R.; Argonne National Lab.; United States. Department of Energy.; United States. Department of Energy. Office of Scientific and Technical Information.
OCLC Number: 727218577
Notes: Published through the Information Bridge: DOE Scientific and Technical Information.
07/01/1992.
"Anl/cp--76870."
"Conf-920792--26."
"DE92019671."
37. annual Society of Photo-Optical Instrumentation Engineers (SPIE) international symposium on optical and optoelectronic applied science and engineering, San Diego, CA (United States),19-24 Jul 1992.
Macrander, A.T.; Cowan, P.L.; Haeffner, D.R.
Description: 10 pages : digital, PDF file.

Abstract:

The inclined double crystal monochromator arrangement is very effective in handling high heat loads and holds considerable promise as a monochromator for undulator beams at third generation synchrotrons. Results for the ideal inclined crystal case have been obtained by dynamical diffraction calculations, and diffraction results for the (111) reflection of silicon are presented for an inclination angle of 85°0 and energies of 5 key and 13.84 key. The diffraction characteristics resemble closely diffraction from-asymmetric (111) plane of silicon. However, the inclined and noninclined cases are not identical. Diffraction in the inclined case is slightly different due to refraction. The full width at half maximum of the Darwin-Prins reflectivity curve is slightly increased ((approximately)l%), and the angles of the outgoing beam after one reflection are slightly altered. That is, except for a wave incident at the Laue point in reciprocal space, the diffraction is always slightly asymmetric. The effect can be exactly reversed by an identical second crystal in the (+, - ) arrangement.

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