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.