Heat load studies of a water-cooled minichannel monochromator for synchrotron x-ray beams

Andreas K. Freund; John R. Arthur; Lin Zhang

doi:10.1117/12.294481

11 December 1997 Heat load studies of a water-cooled minichannel monochromator for synchrotron x-ray beams

Andreas K. Freund, John R. Arthur, Lin Zhang

Proceedings Volume 3151, High Heat Flux and Synchrotron Radiation Beamlines; (1997) https://doi.org/10.1117/12.294481
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

We fabricated a water-cooled silicon monochromator crystal with small channels for the special case of a double-crystal fixed-exit monochromator design where the beam walks across the crystal when the x-ray energy is changed. The two parts of the cooled device were assembled using a new technique based on low melting point solder. The bending of the system produced by this technique could be perfectly compensated by mechanical counter-bending. Heat load tests of the monochromator in a synchrotron beam of 75 W total power, 3 mm high and 15 mm wide, generated by a multipole wiggler at SSRL, showed that the thermal slope error of the crystal is 1 arcsec/40 W power, in full agreement with finite element analysis. The cooling scheme is adequate for bending magnet beamlines at the ESRF and present wiggler beamlines at the SSRL.

Citation Download Citation

Andreas K. Freund, John R. Arthur, and Lin Zhang "Heat load studies of a water-cooled minichannel monochromator for synchrotron x-ray beams", Proc. SPIE 3151, High Heat Flux and Synchrotron Radiation Beamlines, (11 December 1997); https://doi.org/10.1117/12.294481

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