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Remotely controlled mirror of variable geometry for small angle x-ray diffraction with synchrotron radiation

Webb, N. G. and Samson, S. and Stroud, R. M. and Gamble, R. C. and Baldeschwieler, J. D. (1976) Remotely controlled mirror of variable geometry for small angle x-ray diffraction with synchrotron radiation. Review of Scientific Instruments, 47 (7). pp. 836-839. ISSN 0034-6748. http://resolver.caltech.edu/CaltechAUTHORS:20120802-145502429

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Abstract

A total-reflecting mirror of 120-cm length was designed and built to focus synchrotron radiation emanating from the electron-positron storage ring at the Stanford Linear Accelerator Center (SPEAR). The reflecting surface is of unpolished float glass. The bending and tilt mechanism allows very fine control of the curvature and selectability of the critical angle for wavelengths ranging from 0.5 to 3.0 Å. Elliptical curvature is used to minimize aberrations. The mirror is placed asymmetrically onto the ellipse so as to achieve a tenfold demagnification of the source. The bending mechanism reduces nonelastic deformation (flow) and minimizes strains and stresses in the glass despite its length. Special design features assure stability of the focused image. The mirror reduces the intensity of shorter wavelength harmonics by a factor of approximately 100.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.1134749DOIUNSPECIFIED
http://rsi.aip.org/resource/1/rsinak/v47/i7/p836_s1PublisherUNSPECIFIED
Additional Information:© 1976 American Institute of Physics. Received 15 January 1976; in final form, 19 March 1976. We are grateful to I. Matsubara of the University of Tokyo for collaboration, to S. Doniach and D. Maurice for support and facilities at Stanford, and especially to H. Winick, A. Golde, and B. Salzburg at Stanford Synchrotron Radiation Project, and to G. Warren and R. Nelson at SLAC. We thank Libbey-Owens-Ford for contributing thirty pieces of float glass, direct from the production line, from which the mirror was selected. We acknowledge help and advice from members of the European synchrotron radiation projects, including J. Witz, U. Arndt, A. Franks, G. Rosenbaum, and M. H. F. Wilkins. Contribution No. 5252 from the Division of Chemistry and Chemical Engineering, California Institute of Technology. This work was supported by the National Science Foundation under Grants Nos. GP-38855X-2, GH-39525, the National Institutes of Health, under Grants Nos. 21111-3 and GM-70469, the U .S.-Japan Cooperative Science Program, and the U.K. Science Research Council. Part of the support was also given by the National Science Foundation Grant No. DMR73-07692 A02. in cooperation with the Stanford Linear Accelerator Center and the Energy Research and Development Administration. National Institutes of Health Postdoctoral Fellowship.
Funders:
Funding AgencyGrant Number
NSFGP-38855X-2
NSFGH-39525
NIH21111-3
NIHGM-70469
U.S.-Japan Cooperative Science ProgramUNSPECIFIED
U.K. Science Research CouncilUNSPECIFIED
NSFDMR73-07692
Energy Research and Development Administration (ERDA)UNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Chemistry and Chemical Engineering5252
Classification Code:PACS: 07.85.-m; 06.60.-c
Record Number:CaltechAUTHORS:20120802-145502429
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120802-145502429
Official Citation:Remotely controlled mirror of variable geometry for small-angle x-ray diffraction with synchrotron radiation N. G. Webb, S. Samson, R. M. Stroud, R. C. Gamble, and J. D. Baldeschwieler, Rev. Sci. Instrum. 47, 836 (1976), DOI:10.1063/1.1134749
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32895
Collection:CaltechAUTHORS
Deposited By: Aucoeur Ngo
Deposited On:02 Aug 2012 22:20
Last Modified:26 Dec 2012 15:48

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