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Title: White Light Focusing Mirror

Abstract

The NSLS X28C white-light beamline is being outfitted with a focusing mirror in order to increase, as well as control, the x-ray intensity at the sample position. The new mirror is a 50 mm x 100 mm x 1100 mm single crystal silicon cylindrical 43.1mm radius substrate bendable to a toroid from infinite to 1200 m radius. The unique feature of this mirror system is the dual use of Indalloy 51 as both a mechanism for heat transfer and a buoyant support to negate the effects of gravity. The benefit of the liquid metal support is the ability to correct for minor slope errors that take the form of a parabola. A bobber mechanism is employed to displace the fluid under the mirror +/- 1.5 mm. This allows RMS slope error correction on the order of 2 urad. The unique mounting of the mirror ensures the contributions to slope error from errant mechanical stresses due to machining tolerances are virtually non-existent. After correction, the surface figure error (measured minus ideal) is <= 0.5 urad rms.

Authors:
; ;  [1]; ; ; ;  [2];  [3]
  1. Advanced Design Consulting USA, 126 Ridge Road, P.O. Box 187, Laming, NY 14882 (United States)
  2. Case Western Reserve University, Center for Synchrotron Biosciences, Building 725A, Upton, NY 11973 (United States)
  3. National Synchrotron Light Source, Upton, NY 11973 (United States)
Publication Date:
OSTI Identifier:
21052606
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 879; Journal Issue: 1; Conference: 9. international conference on synchrotron radiation instrumentation, Daegu (Korea, Republic of), 28 May - 2 Jun 2006; Other Information: DOI: 10.1063/1.2436152; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BEAM PRODUCTION; CONTROL; CORRECTIONS; ERRORS; FOCUSING; GRAVITATION; HEAT TRANSFER; LIQUID METALS; MIRRORS; MONOCRYSTALS; NSLS; PHOTON BEAMS; SILICON; STRESSES; SUBSTRATES; VISIBLE RADIATION; X RADIATION

Citation Formats

Johnson, Eric, Lyndaker, Aaron, Deyhim, Alex, Sullivan, Michael, Chance, Mark, Abel, Don, Toomey, John, and Hulbert, Steven. White Light Focusing Mirror. United States: N. p., 2007. Web. doi:10.1063/1.2436152.
Johnson, Eric, Lyndaker, Aaron, Deyhim, Alex, Sullivan, Michael, Chance, Mark, Abel, Don, Toomey, John, & Hulbert, Steven. White Light Focusing Mirror. United States. doi:10.1063/1.2436152.
Johnson, Eric, Lyndaker, Aaron, Deyhim, Alex, Sullivan, Michael, Chance, Mark, Abel, Don, Toomey, John, and Hulbert, Steven. Fri . "White Light Focusing Mirror". United States. doi:10.1063/1.2436152.
@article{osti_21052606,
title = {White Light Focusing Mirror},
author = {Johnson, Eric and Lyndaker, Aaron and Deyhim, Alex and Sullivan, Michael and Chance, Mark and Abel, Don and Toomey, John and Hulbert, Steven},
abstractNote = {The NSLS X28C white-light beamline is being outfitted with a focusing mirror in order to increase, as well as control, the x-ray intensity at the sample position. The new mirror is a 50 mm x 100 mm x 1100 mm single crystal silicon cylindrical 43.1mm radius substrate bendable to a toroid from infinite to 1200 m radius. The unique feature of this mirror system is the dual use of Indalloy 51 as both a mechanism for heat transfer and a buoyant support to negate the effects of gravity. The benefit of the liquid metal support is the ability to correct for minor slope errors that take the form of a parabola. A bobber mechanism is employed to displace the fluid under the mirror +/- 1.5 mm. This allows RMS slope error correction on the order of 2 urad. The unique mounting of the mirror ensures the contributions to slope error from errant mechanical stresses due to machining tolerances are virtually non-existent. After correction, the surface figure error (measured minus ideal) is <= 0.5 urad rms.},
doi = {10.1063/1.2436152},
journal = {AIP Conference Proceedings},
number = 1,
volume = 879,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2007},
month = {Fri Jan 19 00:00:00 EST 2007}
}