kstart.html#quickrecon">Quick Start</a> the CT-system is such a 'classical 24-slices' 16slice-CT, 
which has 24 non-uniform slices, their geometry data are recorded in the detector calibration table.
Of cause 24 slices of the geometry data are recorded, the 'collimator explain' is to tell the program how to use the calibration table for each 
protocol both in simulation and reconstruction (and will in calibration or other jobs). The collimator explain configure file is a fundamental part 
of the system conf