Add variable fTRIG1_RAW_CoinTime for raw cointime calculated by
    difference in SHMS trigger (TRIG1) in ROC1 minus
    SHMS trigger in ROC2.

    Add variable fTRIG4_RAW_CoinTime for raw cointime calculated by
    difference in HMS trigger (TRIG4) in ROC1 minus
    HMS trigger in ROC2.

    Add new variables using these raw time differences
    fTRIG1_epCoinTime
    fTRIG4_epCoinTime
    fTRIG1_eKCoinTime
    fTRIG4_eKCoinTime
    fTRIG1_ePiCoinTime
    fTRIG4_ePiCoinTime
    fTRIG1_ePosCoinTime
    fTRIG4_ePosCoinTime