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Title: Commissioning of the Spherical Grating Monochromator Soft X-ray Spectroscopy Beamline at the Canadian Light Source

Abstract

The Spherical Grating Monochromator (SGM) is a Dragon type soft x-ray beamline designed to provide users at the Canadian Light Source (CLS) with monochromatic photons with energies between 250 and 2000 eV. Commissioning of the beamline began in the spring of 2005 and is expected to be completed in July 2006. Aspects of the commissioning process included the use of an object oriented approach to developing the beamline controls, the employment of a beam based alignment procedure and a large amount of user involvement. A description of the beamline and the commissioning techniques used is presented, along with examples of the beamline performance and capabilities.

Authors:
; ; ; ; ;  [1];  [2]
  1. Canadian Light Source, Inc., 101 Perimeter Road, Saskatoon, Saskatchewan, S7N 0X4 (Canada)
  2. Department of Chemistry, University of Western Ontario, Chemistry Building 1151 Richmond Street, London, Ontario, N6A 5B7 (Canada)
Publication Date:
OSTI Identifier:
21052557
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: 10.1063/1.2436101; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM PRODUCTION; CANADIAN ORGANIZATIONS; COMMISSIONING; CONTROL; DIFFRACTION GRATINGS; LIGHT SOURCES; MONOCHROMATIC RADIATION; MONOCHROMATORS; PERFORMANCE; PHOTON BEAMS; PHOTONS; SOFT X RADIATION; SPHERICAL CONFIGURATION; X-RAY SPECTROSCOPY

Citation Formats

Regier, T., Paulsen, J., Wright, G., Coulthard, I., Tan, K., Blyth, R. I. R., and Sham, T. K. Commissioning of the Spherical Grating Monochromator Soft X-ray Spectroscopy Beamline at the Canadian Light Source. United States: N. p., 2007. Web. doi:10.1063/1.2436101.
Regier, T., Paulsen, J., Wright, G., Coulthard, I., Tan, K., Blyth, R. I. R., & Sham, T. K. Commissioning of the Spherical Grating Monochromator Soft X-ray Spectroscopy Beamline at the Canadian Light Source. United States. doi:10.1063/1.2436101.
Regier, T., Paulsen, J., Wright, G., Coulthard, I., Tan, K., Blyth, R. I. R., and Sham, T. K. Fri . "Commissioning of the Spherical Grating Monochromator Soft X-ray Spectroscopy Beamline at the Canadian Light Source". United States. doi:10.1063/1.2436101.
@article{osti_21052557,
title = {Commissioning of the Spherical Grating Monochromator Soft X-ray Spectroscopy Beamline at the Canadian Light Source},
author = {Regier, T. and Paulsen, J. and Wright, G. and Coulthard, I. and Tan, K. and Blyth, R. I. R. and Sham, T. K.},
abstractNote = {The Spherical Grating Monochromator (SGM) is a Dragon type soft x-ray beamline designed to provide users at the Canadian Light Source (CLS) with monochromatic photons with energies between 250 and 2000 eV. Commissioning of the beamline began in the spring of 2005 and is expected to be completed in July 2006. Aspects of the commissioning process included the use of an object oriented approach to developing the beamline controls, the employment of a beam based alignment procedure and a large amount of user involvement. A description of the beamline and the commissioning techniques used is presented, along with examples of the beamline performance and capabilities.},
doi = {10.1063/1.2436101},
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}
}
  • The variable line spacing plane grating monochromator beamline at the Canadian Light Source (CLS) employs three grazing incidence variable line spacing gratings to cover a photon energy range of 5-250 eV. It uses a 185 mm period length planar permanent magnet insertion device as the photon source, sharing a straight section with another soft x-ray beamline at the CLS. The commissioning and performance of the beamline is reported. The high resolution photoabsorption spectra of Ar and PF{sub 5} gases are reported. A resolving power of over 40 000 for photons in the low energy region and >10 000 for amore » wider energy range (8-200 eV) can be achieved. A photon flux of up to 2x10{sup 12} photons/s per 100 mA with slit settings of 50 {mu}m has been measured.« less
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  • By using two aspherical variable-line-space active gratings and applying the energy compensation principle, we have designed a very efficient active grating monochromator -- active grating spectrometer (AGM-AGS) beamline system for the photon demanding inelastic soft-x-ray scattering experiments. During the energy scan, the defocus and coma aberrations of the AGM can be completely eliminated to make the focal point fixed at the sample position and to maintain high spectral resolution for the entire spectral range. The AGS, which has an optical system identical to that of the AGM, but positioned reversely along the optical path, collects the photons emitted from themore » sample with a nearly identical energy spread as the AGM and focus them onto a position sensitive detector located at the exit slit position. The ray tracing results show that the efficiency of the AGM-AGS is two orders of magnitudes higher than that of conventional design while maintaining a very high spectral resolution.« less
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