titles_tfte

                              Titles:  TFTE
                              =============
 
Contact:  S. Brice, Oxford.
 

 
Titles Files
------------
 
fitter.dat
 
 
Verification
------------
 
 
Description
-----------
 
    This bank contains input data for the elastic fitter.
 
Data Words
----------
 
        Fixed length Database Header.  See titles_dbhdr.html
 
   KFTE_
 
1   I   MIN_PMT    Minimum number of PMTs to fit.
2   I   TX_TYP     Type of fitter to use for initial vertex position:
                             0 = true
                             1 = quad fitted
                             2 = time fitted
                             3 = origin (0,0,0)
                             4 = grid fitted
3   I   DIR_TYP    Type of fitter to use for initial vertex direction:
                             0 = true
                             1 = time fitted
                             2 = calculate mean direction
 
 
                        POSITION FIT PARAMETERS
4   F   INI_P_TMP  Starting temperature for position energy minimisation
                   by simulated annealing.
5   F   FIN_P_TMP  Finishing temperature for position energy minimisation.
6   F   GRD_P_TMP  Multiplicative factor by which position temperature
                   is reduced on each iteration.
7   F   P_LMD      Squared distance beyond which a hit is considered as noise
8   F   P_DLT      Attempted correction for fitter pull
9   F   ETA_POS    The position update parameter for gradient descent.
10  F   ETA_TIM    The time update parameter for gradient descent.
11  F   GRD_P_ETA  Multiplicative factor by which the position and time
                   update parameters are reduced on each iteration.
 
 
                        DIRECTION FIT PARAMETERS
12  F   INI_D_TMP  Starting temperature for direction energy minimisation
                   by simulated annealing.
13  F   FIN_D_TMP  Finishing temperature for direction energy minimisation.
14  F   GRD_D_TMP  Multiplicative factor by which direction temperature
                   is reduced on each iteration.
15  F   D_LMD      Squared distance beyond which a hit is considered as noise
16  F   ETA_THE    The polar angle update parameter for gradient descent
17  F   ETA_PHI    The azimuthal angle update parameter for gradient descent
18  F   GRD_D_ETA  Multiplicative factor by which the angle update
                   parameters are reduced on each iteration.
 
 
19  I   MAX_ITER   Maximum number of iterations allowed
20  F   TOL        Fractional tolerance on the position and direction
                   minimisations