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:
 |
 |
 |
| 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 |
