class AliPHOSClusterizerv1: public AliPHOSClusterizer

 default ctor (to be used mainly by Streamer)

 ctor with the indication of the file where header Tree and digits Tree are stored

 dtor

 Steering method to perform clusterization for one event
 The input is the tree with digits.
 The output is the tree with clusters.

 Calls TMinuit to fit the energy distribution of a cluster with several maxima
 The initial values for fitting procedure are set equal to the positions of local maxima.
 Cluster will be fitted as a superposition of nPar/3 electromagnetic showers

 Make all memory allocations which can not be done in default constructor.
 Attach the Clusterizer task to the list of PHOS tasks

 Gives the neighbourness of two digits = 0 are not neighbour but continue searching
                                       = 1 are neighbour
                                       = 2 are not neighbour but do not continue searching
                                       =-1 are not neighbour, continue searching, but do not look before d2 next time
 neighbours are defined as digits having at least a common vertex
 The order of d1 and d2 is important: first (d1) should be a digit already in a cluster
                                      which is compared to a digit (d2)  not yet in a cluster

Check if two cells have reasonable time difference
Note that at low amplitude time is defined up to 1 tick == 100 ns.

 Tells if (true) or not (false) the digit is in a PHOS-EMC module

 Tells if (true) or not (false) the digit is in a PHOS-CPV module

 Steering method to construct the clusters stored in a list of Reconstructed Points
 A cluster is defined as a list of neighbour digits

 Unfolds clusters using the shape of an ElectroMagnetic shower
 Performs unfolding of all EMC/CPV clusters

 Shape of the shower (see PHOS TDR)
 If you change this function, change also the gradient evaluation in ChiSquare()

 Performs the unfolding of a cluster with nMax overlapping showers

 Calculates the Chi square for the cluster unfolding minimization
 Number of parameters, Gradient, Chi squared, parameters, what to do

 Print clusterizer parameters

 Prints list of RecPoints produced at the current pass of AliPHOSClusterizer

For each EMC rec. point set the distance to the nearest bad crystal.
Author: Boris Polichtchouk

 Calibrate EMC digit, i.e. multiply its Amp by a factor read from CDB

 Calibrate time in EMC digit

 Checks if digits are in neighbour cells

  virtual const char *  GetRecPointsBranch() const{ return GetName() ;}

Switch to "on flyght" mode, without writing to TreeR and file

 Chi^2 of the fit. Should be static to be passed to MINUIT
  void Unload() ;