title: Ronchi test for characterization of X-ray nanofocusing optics and beamlines.
abstract: A Ronchi interferometer for hard X-rays is reported in order to characterize the performance of the nanofocusing optics as well as the beamline stability. Characteristic interference fringes yield qualitative data on present aberrations in the optics. Moreover, the visibility of the fringes on the detector gives information on the degree of spatial coherence in the beamline. This enables the possibility to detect sources of instabilities in the beamline like vibrations of components or temperature drift. Examples are shown for two different nanofocusing hard X-ray optics: a compound refractive lens and a zone plate.
authors.affiliation: Biomedical and X-ray Physics, KTH Royal Institute of Technology, Stockholm 106 91, Sweden.
authors.forename: Fredrik
authors.initials: F
authors.lastname: Uhlén
authors.affiliation: Biomedical and X-ray Physics, KTH Royal Institute of Technology, Stockholm 106 91, Sweden.
authors.forename: Jussi
authors.initials: J
authors.lastname: Rahomäki
authors.affiliation: Biomedical and X-ray Physics, KTH Royal Institute of Technology, Stockholm 106 91, Sweden.
authors.forename: Daniel
authors.initials: D
authors.lastname: Nilsson
authors.affiliation: Institute of Structural Physics, Technische Universität Dresden, Dresden 01062, Germany.
authors.forename: Frank
authors.initials: F
authors.lastname: Seiboth
authors.affiliation: Biomedical and X-ray Physics, KTH Royal Institute of Technology, Stockholm 106 91, Sweden.
authors.forename: Claude
authors.initials: C
authors.lastname: Sanz
authors.affiliation: Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Wagner
authors.affiliation: Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK.
authors.forename: Christoph
authors.initials: C
authors.lastname: Rau
authors.affiliation: Institute of Structural Physics, Technische Universität Dresden, Dresden 01062, Germany.
authors.forename: Christian G
authors.initials: CG
authors.lastname: Schroer
authors.affiliation: Biomedical and X-ray Physics, KTH Royal Institute of Technology, Stockholm 106 91, Sweden.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Vogt
keywords: Ronchi interferometer; compound refractive lens; zone plate