title: Capturing dynamics with Eiger, a fast-framing X-ray detector.
abstract: Eiger is the next-generation single-photon-counting pixel detector following the widely used Pilatus detector. Its smaller pixel size of 75 µm × 75 µm, higher frame rate of up to 22 kHz, and practically zero dead-time (~4 µs) between exposures will further various measurement methods at synchrotron sources. In this article Eiger's suitability for X-ray photon correlation spectroscopy (XPCS) is demonstrated. By exploiting its high frame rate, complementary small-angle X-ray scattering (SAXS) and XPCS data are collected in parallel to determine both the structure factor and collective diffusion coefficient of a nano-colloid suspension. For the first time, correlation times on the submillisecond time scale are accessible with a large-area pixel detector.
authors.affiliation: Paul Scherrer Institut, 5232 Villigen PSI, Switzerland. ian.johnson@psi.ch
authors.forename: I
authors.initials: I
authors.lastname: Johnson
authors.forename: A
authors.initials: A
authors.lastname: Bergamaschi
authors.forename: J
authors.initials: J
authors.lastname: Buitenhuis
authors.forename: R
authors.initials: R
authors.lastname: Dinapoli
authors.forename: D
authors.initials: D
authors.lastname: Greiffenberg
authors.forename: B
authors.initials: B
authors.lastname: Henrich
authors.forename: T
authors.initials: T
authors.lastname: Ikonen
authors.forename: G
authors.initials: G
authors.lastname: Meier
authors.forename: A
authors.initials: A
authors.lastname: Menzel
authors.forename: A
authors.initials: A
authors.lastname: Mozzanica
authors.forename: V
authors.initials: V
authors.lastname: Radicci
authors.forename: D K
authors.initials: DK
authors.lastname: Satapathy
authors.forename: B
authors.initials: B
authors.lastname: Schmitt
authors.forename: X
authors.initials: X
authors.lastname: Shi