Sagittal crystal focusing of undulator radiation with high-heat-load inclined crystals

Gene E. Ice; Cullie J. Sparks

doi:10.1117/12.138701

20 January 1993 Sagittal crystal focusing of undulator radiation with high-heat-load inclined crystals

Gene E. Ice, Cullie J. Sparks

Proceedings Volume 1740, Optics for High-Brightness Synchrotron Radiation Beamlines; (1993) https://doi.org/10.1117/12.138701
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

Sagittal focusing of undulator radiation is shown to be compatible with the proposed inclined double-crystal monochromator geometry for heat load reduction. The focusing aberrations are shown to be negligible for typical undulator-beam divergences over a range of magnifications from 1:2 to 6:1 and energies from 3 to 40 keV. The inclined geometry reduces the required sagittal curvature of the focusing crystal compared to focusing with conventional symmetric crystals; hence, focusing is possible at higher X-ray energies and with less anticlastic bending. In addition, anticlastic stiffening ribs project a smaller footprint to the beam so that the achievable focal spot size is potentially better than with conventional symmetrically cut crystals.

Citation Download Citation

Gene E. Ice and Cullie J. Sparks "Sagittal crystal focusing of undulator radiation with high-heat-load inclined crystals", Proc. SPIE 1740, Optics for High-Brightness Synchrotron Radiation Beamlines, (20 January 1993); https://doi.org/10.1117/12.138701

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