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The Huber Kappa goniometer will be used to position and orient the sample with 6 degrees of freedom. The sample mount shall fit the standard Huber goniometer head. The Oxford Cryostream system will be available to provide in-air sample cooling down to 100K. Heating up to 350K can be delivered by the same system as well.
Every user group accepted and scheduled to use the XPP standard configuration will be required to know the crystallographic orientation of their sample.
LCLS proposals are submitted through the User Portal.
With this standard configuration, XPP will be able to support time-resolved wide-angle scattering and x-ray emission measurements for the study of photo-excited molecular dynamics in the solution phase.
A von Hamos spectrometer will be available of the measurement of the following x-ray emission lines: Mn Kß1,3, Kß2,5 and Kα, Fe Kß1,3 and Kß2,5, Co Kß1,3 and Kß2,5, Ni Kß1,3 and Kß2,5, Ti Kß1,3 and Kß2,5 and V Kα.
A helium purged sample chamber will be used to house the liquid jet, with Kapton windows to allow x-ray scattering and emission to be measured by detectors outside the chamber. Liquid jet driven by HPLC pumps will be used to deliver the sample into the interaction point.
Round Jet diameters of the following size are available : 20, 30, 40, 50, 75, 100, 125, 150, 175, 200, 250, 300, 500.
Flat-sheet thicknesses of the following size are available : 19, 25, 38, 50, 75, 100, 125, 175, 188, 250.
Every user group accepted and scheduled to use the XPP standard configuration will be strongly advised to test the injection of their sample at the LCLS Sample Characterization Lab prior to the experiment.
SLAC National Accelerator Laboratory, Menlo Park, CA
Operated by Stanford University for the U.S. Dept. of Energy