FcsSim and FcsData (May 1997)
FcsData will contain the digi data from the Fast Control System for the Level 1 Accept, including the time of the L1A, as well as the lines which triggered.
FcsSim has taken over the Fast Control simulation functionality of trgFrame/FC* Fortran77 and C++ code, and fills the FcsDigi.At the present, the time quantity is filled with the current time of day, as no standard for the time of a GEANT event has
been agreed upon, and thus no absolute time for the Level 1 Accept can be calculated.
FcsSim also creates the AbsEvtObj FcsSimOut, which contains the calculated time of the Level 1 Accept relative to GEANT physics time; this is a simulation-only quantity. By default, this is a random number in a flat distribution between 0 ns and -1000
ns (approximately the jitter requirement); this can be changed to use the full trigger simulation to determine the event time, to use a Gaussian distribution, or to shrink the range of random numbers.
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