Detectors and Data Collection

• Custom made PILATUS3 X CdTe 900K-W-ESRF
• 9 x CdTe module of 83.8x33.5 mm
• 4439x195 pixels with 172 μm pixel size
• 10⁷ photons/s/pixel
• Data recovered at 1 Hz (typical) rate for sequential analysis, rebin, etc
• Mounted on fully drivable y, z, ω, ψ, χ stage at sample-detector distances of 2-5 m
• Accompanied by 4X x-ray eye in-line camera in continuous operation
• Real-space resolution is <= 0.6 Angstrom

Figure 1. 2D detector currently in operation at ID06LVP is PILATUS3 X CdTe 900K-W-ESRF.

Figure 2. Image of a single 2D frame of LaB₆ calibration standard from the PILATUS detector (FWHM = 0.0092(13)^o  at 53 keV)

The Pilatus detector consists of 9 modules, which results in a presence of chips on a 2D image. They can be masked or convoluted for further data analysis.

The continuous collection gives .edf images that can be further integrated in Fit2D / Dioptas software to produce 2D images (Fig. 3) for analysing a sample's development with time, pressure, and temperature.

Figure 3. In situ XRD patterns demonstrate the successive transformation of aragonite →calcite-Vb and calcite-V → calcite-Vb and corresponding PT conditions (Druzhbin et al., 2022). Each line is 1 sec of exposure, continuous heating/cooling. From IH-ES-32; Druzhbin D.