STIX Design

Main STIX design

32 coarsely pixelized Cadmium-Telluride detectors register the energy and timing of an incident X-ray photon over an energy range from 4-150 keV.

STIX is a so-called Fourier imager. On 30 of the detectors, the incoming photon flux is spatially modulated by means of two grids placed at a distance of 55 cm apart to form a so called Moiré-pattern. The spatial modulation on each detector contains encoded information on the location and size of the X-ray source. By combining this information from all 30 detectors, an image can be reconstructed.

A movable attenuator can be placed in front of the detectors in case of very high photon flux to reduce pile-up and detector deadtime.