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WEOB02 |
Flexible X-ray Focusing using CRL Transfocators for in situ GI-SAXS/WAXS Experiments at MiNaXS/P03 | ||||
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P03 operates a micro- and nanofocus endstation both capable of transmission as well as grazing-incidence X-ray scattering experiments*,**,***. The beam sizes range from typically 22 x 13 ’m2 to 350 x 250 nm2. Common, unique features of the different focusing schemes are the exceptional long focal distance, allowing for a variety of advanced in situ and operando sample environments*,****. The newly commissioned CRL3-system consists of two binary stacks of one-dimensional 1D BeCRL mounted on an in-vacuum lens-exchanger with two train units, piezo-driven motors and a hexapod for generating a round-shaped microfocus beam with increased flux at 600 mm focal distance. An additional condenser system CRL4 for beam parallelization prior to focusing systems will increase the flux at both endstations. CRL4 consists of two Smarpods in-vacuum stages, both equipped with a stepped cascade of 1D lenses each for decoupled horizontal and vertical focusing. We will present the different focusing schemes incl. projected performances as well as current status of both new CRL-stations and technical challenges, e.g., space constraints, precise positioning, stability and high-vacuum compatibility.
*Buffet et al., J. Synchr. Rad. 19 647, 2012 **Krywka et al., J. Appl. Cryst. 45 85,2012 ***Santoro et al., Rev. Sci. Instr. 85 043901, 2014 ****Schwartzkopf and Roth, Nanomaterials 6 239, 2016 |
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Slides WEOB02 [5.775 MB] | ||||
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