titles_tftg

                              Titles:  TFTG
                              =============
 
Contact:  M. Moorhead,  LBL.
 
 
    Revision History:-
    ================
 
    2.09  M. Moorhead  First version.
    4.00  X. Chen      Major update.
    5.01  N. McCauley  Use ANxx.


 
Titles Files
------------
 
fitter.dat
 
 
Verification
------------
 
 
Description
-----------
 
    This bank contains input data for the grid fitter.
 
Data Words
---------
 
        Data types: B(bit), I, F, D(double), H(hollerith 4 char)
 
        Fixed length Database Header.  See titles_dbhdr.html.
 
        KTFTQ...
 
   1  I _CONTROL         Run type? :-  0 = fit with fixed start point
                                       1 = fit with grid
   2  I _MIN_PMT         Minimum PMT hits for fit.
   3  I _MAX_PMT         Maximum PMT hits for fit.
   4  F _GRID_SIZE       Search volume (radius) in cm).
   5  F _GRID_STEP       Grid point spacing in cm).
   6  I _N_GRID          Number of best grid points used in fit
   7  F _FRACTION        Minimum fraction of hits required in time window.
   8  F _T_CUT           Half-width of time window in nsec
   9  F _SIGMA           Sigma of time distribution
  10  F _LATE_FLAT       Late side extra flat background in time distribution
  11  F _LATE_EXP_COEF   Late side exp coef in time distribution
  12  F _LATE_EXP_DECAY  Late side exp decay const in time distribution
  13  F _NOISE           Pmt noise in time distribution
  14  F _RX              X-position of start point
  15  F _RY              Y-position of start point
  16  F _RZ              Z-position of start point
  17  I _APPLY_GEO       switch to apply geometry filtering before fitting
                          1: on  0: off
  18  F _GEO_TOL         tolerance in geometry filter due to PMT time jitters
  19  I _APPLY_WIN       switch to apply sliding time window before fitting
                          1: on  0: off
  20  F _T_WIN           length of the sliding time window to purge bad hits
                          before reconstruction
  21  I _GRID_PDF        type of p.d.f. used in the grid search
                          0:  a p.d.f. generated by MC
                          1:  an asymmetrically truncated gaussian
                              Optimized for PMT beta gamma events
                          2:  an equally truncated gaussian
                              For all events except PMT beta gamma events
  22  I _APPLY_FTT       switch to turn on iterations to throw out bad hits
                          after grid search.
                          1: on  0: off
  23  I _FTT_PDF         type of p.d.f. used in iteration
                          1:  an asymmetrically truncated gaussian
                          2:  an equally truncated gaussian
  24  I _FIT_DIR         Method used to fit event direction
                          1 = Average over nhits
                          2 = Maximum likelihood method
  25  F _FIT_DIR_WIN     Time window used in direction fitting
  26  I _ANXX_PCA_MASK   Mask for ANxx PCA tests. 
  27  I _ANXX_NU_MASK    Mask for ANxx Neutrino tests.