I. Johnson,
A. Bergamaschi,
J. Buitenhuis,
R. Dinapoli,
D. Greiffenberg,
B. Henrich,
T. Ikonen,
G. Meier,
A. Menzel,
A. Mozzanica,
V. Radicci,
D. K. Satapathy,
B. Schmitt and
X. Shi A high-frame-rate single-photon-counting pixel detector named Eiger and its suitability for X-ray photon correlation spectroscopy are described.