title: A tunable wedge-shaped absorber for hard X-ray synchrotron applications.
abstract: The concept of a concave aluminium wedge-shaped absorber for hard X-ray synchrotron beamlines is presented. Unlike the commonly used absorber types (fixed-thickness absorber sheets or binary exchangers of individual fixed absorbers), this concept allows a compact system, controlled with a single linear positioner, and provides a wide attenuation range as well as a precise tunability over a large energy range. Data were recorded at the Nanofocus Endstation of the MINAXS beamline, PETRA III, Hamburg, Germany.
authors: Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany.
authors: C
authors: C
authors: Krywka
authors: Institute for Applied and Experimental Physics, University of Kiel, Leibnizstrasse 19, D-24098 Kiel, Germany.
authors: M
authors: M
authors: Brix
authors: Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany.
authors: M
authors: M
authors: Müller
keywords: absorber; attenuator; beamline instrumentation; flux reduction