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  • Introduction:
    • The results or output from COMGEANT are hits (position, or energy deposition in a calorimeter detectors)
    • To save the disk space, these information are packed in the output ntuple files of comgeant. Therefore, these ntuples can not be directly read by PAW or converted to root.
    • The purpose of the converter is to decode the information from comgeant ntuples and save them into normal cernlib ntuples, so that they can be converted into root format.
    • Some special functions (made by Eugene) are used to decode the information out, and then saved.
    • No Magic here :)
    • Example of the decoder can be found at