CoSAXS has two detectors, housed within the vacuum vessel. The SAXS detector is an Eiger2 X 4M, specification below. The WAXS detector is a Pilatus 2M, in an L-shaped configuration.
| Specification for Eiger2 4M SAXS detector | |
|---|---|
| Number of detector modules | 2 x 4 |
| Sensitive area (width x height) [mm²] | 155.1 x 162.2 |
| Pixel size [µm²] | 75 x 75 |
| Total number of pixels | 2068 x 2162 = 4,471,016 |
| Gap width vertical / horizontal [pixels] | 12 / 38 |
| Energy discriminating thresholds | 2 |
| Count rate capability [photons/s/pixel] | 10⁷ |
| Point-spread function | 1 (FWHM) |
| Silicon Sensor thickness [µm] | 450 |
| Data format | HDF5 / NeXus |
| Vacuum Compatible | Yes |
| Frame rate [Hz] | 750 (500 stable) |
| Energy range [keV] | 6.0 – 40 |
| Dimensions (WHD) [mm³] | 235 x 237 x 372 |
| Weight [kg] | 15 |
A beamstop (2 mm in diameter) with integrated photodiode will be in front of the SAXS detector.