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Title: Initial characterization and design of an ultra-high-vacuum-compatible artificail channel-cut monochromator.

Abstract

We present initial characterization results of a novel ultra-high-vacuum-compatible artificial channel-cut monochromator that has been installed as part of undulator beamline 8-ID-I at the Advanced Photon Source. We present details of the mechanical design and control-system implementation of the new device. The monochromator has been designed to meet the challenging stability and optical requirements of the x-ray photon correlation spectroscopy program hosted at this beamline. In particular, the device incorporates a novel in-vacuum sine-bar drive mechanism for the combined pitch motion of the two crystals and a flexure-based high-stiffness weak-link mechanism for fine tuning the pitch and roll of the second crystal relative to the first crystal.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
970765
Report Number(s):
ANL/XSD/CP-118663
TRN: US1000895
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: 9th International Conference on Synchrotron Radiation Instrumentation (SRI 2006); May 27, 2006 - Jun. 4, 2006; Daegu, Korea
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; ADVANCED PHOTON SOURCE; DESIGN; IMPLEMENTATION; MONOCHROMATORS; PHOTONS; SPECTROSCOPY; STABILITY; SYNCHROTRON RADIATION; TUNING; WIGGLER MAGNETS

Citation Formats

Narayanan, S., Sandy, A. R., Sprung, M., Sullivan, J., Preissner, C., and Shu, D. Initial characterization and design of an ultra-high-vacuum-compatible artificail channel-cut monochromator.. United States: N. p., 2007. Web. doi:10.1063/1.2436209.
Narayanan, S., Sandy, A. R., Sprung, M., Sullivan, J., Preissner, C., & Shu, D. Initial characterization and design of an ultra-high-vacuum-compatible artificail channel-cut monochromator.. United States. doi:10.1063/1.2436209.
Narayanan, S., Sandy, A. R., Sprung, M., Sullivan, J., Preissner, C., and Shu, D. Mon . "Initial characterization and design of an ultra-high-vacuum-compatible artificail channel-cut monochromator.". United States. doi:10.1063/1.2436209.
@article{osti_970765,
title = {Initial characterization and design of an ultra-high-vacuum-compatible artificail channel-cut monochromator.},
author = {Narayanan, S. and Sandy, A. R. and Sprung, M. and Sullivan, J. and Preissner, C. and Shu, D.},
abstractNote = {We present initial characterization results of a novel ultra-high-vacuum-compatible artificial channel-cut monochromator that has been installed as part of undulator beamline 8-ID-I at the Advanced Photon Source. We present details of the mechanical design and control-system implementation of the new device. The monochromator has been designed to meet the challenging stability and optical requirements of the x-ray photon correlation spectroscopy program hosted at this beamline. In particular, the device incorporates a novel in-vacuum sine-bar drive mechanism for the combined pitch motion of the two crystals and a flexure-based high-stiffness weak-link mechanism for fine tuning the pitch and roll of the second crystal relative to the first crystal.},
doi = {10.1063/1.2436209},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Conference:
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  • We present initial characterization results of a novel ultra-high-vacuum-compatible artificial channel-cut monochromator that has been installed as part of undulator beamline 8-ID-I at the Advanced Photon Source. We present details of the mechanical design and control-system implementation of the new device. The monochromator has been designed to meet the challenging stability and optical requirements of the x-ray photon correlation spectroscopy program hosted at this beamline. In particular, the device incorporates a novel in-vacuum sine-bar drive mechanism for the combined pitch motion of the two crystals and a flexure-based high-stiffness weak-link mechanism for fine tuning the pitch and roll of themore » second crystal relative to the first crystal.« less
  • We present design and characterization results of a novel ultra-high-vacuum-compatible artificial channel-cut monochromator that has been installed at the undulator beamline 8-ID-I at the Advanced Photon Source. The monochromator has been designed to meet the challenging stability and optical requirements of the x-ray photon correlation spectroscopy program hosted at this beamline. In particular, the device incorporates a novel in-vacuum sine-bar drive mechanism for the combined pitch motion of the two crystals and a flexure-based high-stiffness weak-link mechanism for fine tuning the pitch and roll of the second crystal relative to the first crystal.
  • A novel ultra-high-vacuum (UHV)-compatible x-ray monochromator has been designed and commissioned at the undulator beamline 8-ID-I at the Advanced Photon Source (APS) for x-ray photon correlation spectroscopy applications. To meet the challenging stability and x-ray optical requirements, the monochromator integrates two new precision angular positioning mechanisms into its crystal optics motion control system: An overconstrained weak-link mechanism that enables the positioning of an assembly of two crystals to achieve the same performance as a single channel-cut crystal, the so called 'artificial channel-cut crystal'; A ceramic motor driven in-vacuum sine-bar mechanism for the double crystal combined pitch motion. The mechanical designmore » of the monochromator, as well as the test results of its positioning performance are presented in this paper.« less
  • A compact tilt accelerometer with high sensitivity at low frequency was designed to provide low frequency corrections for the feedback signal of the Advanced Laser Interferometer Gravitational Wave Observatory active seismic attenuation system. It has been developed using a Tungsten Carbide ceramic knife-edge hinge designed to avoid the mechanical 1/f noise believed to be intrinsic in polycrystalline metallic flexures. Design and construction details are presented; prototype data acquisition and control limitations are discussed. The instrument's characterization reported here shows that the hinge is compatible with being metal-hysteresis-free, and therefore also free of the 1/f noise generated by the dislocation Self-Organizedmore » Criticality in the metal. A tiltmeter of this kind will be effective to separate the ground tilt component from the signal of horizontal low frequency seismometers, and to correct the ill effects of microseismic tilt in advanced seismic attenuation systems.« less