Tool for per pixel calibration

In the field of X-ray radiography the image quality can be significantly improved by a beam hardening correction procedure especially if used in combination with pixel detectors of Medipix family.

Two disk Filter Revolver is employed for calibration phase of beam hardening correction procedure. Each disk can be equipped by 7 calibrators so 49 combinations are possible. Calibrators are fixed in exchangeable holders with bayonet mechanism. Positioning of the filters is driven by stepper motors with magnetic brakes using SMCU-7 and can be controlled directly from Pixelman software.

Changeable calibrator holders:

Bayonet mechanism Bayonet mechanism Bayonet mechanism
Put the holder with calibrating foil to the revolver wheel
Insert the holder to the bayonet
Rotate the holder to fix it in bayonet mechanism