Using the MAXIPIX detector for coherent X-ray scattering applications

Abstract

Possibilities to use the MAXIPIX 2×2 detector for coherent scattering applications are investigated. This study focuses on X-ray Photon Correlation Spectroscopy experiments. Flatfield measurements show that the MAXIPIX detector pixels respond very inhomogeneously in the X-ray range between 5 and 10 keV most commonly used for coherent scattering experiments. Two colloidal model sample systems are investigated using the MAXIPIX and a direct illumination CCD for comparison. It is demonstrated that the MAXIPIX 2 × 2 detector is applicable for static and dynamic coherent scattering experiments after flatfield correction.

Correlated heterogeneous dynamics in glass-forming polymers

“…These were observed for T < 250 K. The higher-temperature regime was therefore only accessible using the MAXIPIX detector, which offers frame rates up to 300 Hz. The diffraction patterns were corrected for background, flat field [43], and bad detector pixels afterward.…”

Coherent X-ray diffractive imaging on the single-cell-level of microbial samples

“…Another degrading factor could be uorescence radiation from the Ge STCS (emission lines K α1 = 9.89 keV, K α2 = 9.86 keV, K β1 = 10.98 keV [302]) 26 . In addition, a supposedly minor e ect may be small sensitivity variations of the pixels of the Lambda detector [260], which could be compensated by a at eld correction.…”

High-flux ptychographic imaging using the new 55 µm-pixel detector `Lambda' based on the Medipix3 readout chip

“…Another degrading factor could be fluorescence radiation from the Ge STCS. In addition, a supposedly minor effect may be small sensitivity variations of the pixels of the Lambda detector (Schavkan et al, 2013), which could be compensated by a flatfield correction.…”