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Title: An adaptive crystal bender for high power synchrotron radiation beams

Abstract

Perfect crystal monochromators cannot diffract x-rays efficiently, nor transmit the high source brightness available at synchrotron radiation facilities, unless surface strains within the beam footprint are maintained within a few arcseconds. Insertion devices at existing synchrotron sources already produce x-ray power density levels that can induce surface slope errors of several arcseconds on silicon monochromator crystals at room temperature, no matter how well the crystal is cooled. The power density levels that will be produced by insertion devices at the third-generation sources will be as much as a factor of 100 higher still. One method of restoring ideal x-ray diffraction behavior, while coping with high power levels, involves adaptive compensation of the induced thermal strain field. The design and performance, using the X25 hybrid wiggler beam line at the National Synchrotron Light Source (NSLS), of a silicon crystal bender constructed for this purpose are described.

Authors:
;
Publication Date:
Research Org.:
Brookhaven National Lab., Upton, NY (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
7010225
Report Number(s):
BNL-47890; CONF-920792-32
ON: DE93000376
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Conference
Resource Relation:
Conference: Society of Photo-Optical Instrumentation Engineers (SPIE) international symposium on optical applied science and engineering, San Diego, CA (United States), 19-24 Jul 1992
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 07 ISOTOPES AND RADIATION SOURCES; PHOTON BEAMS; MONOCHROMATORS; BEAM OPTICS; CRYSTALS; PERFORMANCE; SYNCHROTRON RADIATION SOURCES; WIGGLER MAGNETS; X-RAY DIFFRACTION; BEAMS; COHERENT SCATTERING; DIFFRACTION; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; EQUIPMENT; MAGNETS; RADIATION SOURCES; SCATTERING; 430303* - Particle Accelerators- Experimental Facilities & Equipment; 070201 - Radiation Sources- Design, Fabrication & Operation

Citation Formats

Berman, L E, and Hastings, J B. An adaptive crystal bender for high power synchrotron radiation beams. United States: N. p., 1992. Web.
Berman, L E, & Hastings, J B. An adaptive crystal bender for high power synchrotron radiation beams. United States.
Berman, L E, and Hastings, J B. Wed . "An adaptive crystal bender for high power synchrotron radiation beams". United States. https://www.osti.gov/servlets/purl/7010225.
@article{osti_7010225,
title = {An adaptive crystal bender for high power synchrotron radiation beams},
author = {Berman, L E and Hastings, J B},
abstractNote = {Perfect crystal monochromators cannot diffract x-rays efficiently, nor transmit the high source brightness available at synchrotron radiation facilities, unless surface strains within the beam footprint are maintained within a few arcseconds. Insertion devices at existing synchrotron sources already produce x-ray power density levels that can induce surface slope errors of several arcseconds on silicon monochromator crystals at room temperature, no matter how well the crystal is cooled. The power density levels that will be produced by insertion devices at the third-generation sources will be as much as a factor of 100 higher still. One method of restoring ideal x-ray diffraction behavior, while coping with high power levels, involves adaptive compensation of the induced thermal strain field. The design and performance, using the X25 hybrid wiggler beam line at the National Synchrotron Light Source (NSLS), of a silicon crystal bender constructed for this purpose are described.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Conference:
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