//               ------ PAMELA Digitizer ------
// 
// Date, release and how-to: see file Pamelagp2Digits.cxx 
// 
// NB: Check length physics packet [packet type (0x10 = physics data)]
//
#include <sstream>
#include <fstream>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include "Riostream.h"
#include "TFile.h"
#include "TDirectory.h"
#include "TTree.h"
#include "TLeafI.h"
#include "TH1.h"
#include "TH2.h"
#include "TMath.h"
#include "TRandom.h"
#include "TSQLServer.h"
#include "TSystem.h"
//
#include "Digitizer.h"
#include "CRC.h"
//
#include <PamelaRun.h>
#include <physics/calorimeter/CalorimeterEvent.h>
#include <CalibCalPedEvent.h>
#include "GLTables.h"
//
extern "C"{
  short crc(short, short);
};
//

Digitizer::Digitizer(TTree* tree, char* &file_raw){
  fhBookTree = tree;
  fFilename =  file_raw;
  fCounter = 0;
  fOBT = 0;

  //
  // DB connections
  //
  TString host = "mysql://localhost/pamelaprod";
  TString user = "anonymous";
  TString psw = "";
  //
  const char *pamdbhost=gSystem->Getenv("PAM_DBHOST");
  const char *pamdbuser=gSystem->Getenv("PAM_DBUSER");
  const char *pamdbpsw=gSystem->Getenv("PAM_DBPSW");
  if ( !pamdbhost ) pamdbhost = "";
  if ( !pamdbuser ) pamdbuser = "";
  if ( !pamdbpsw ) pamdbpsw = "";
  if ( strcmp(pamdbhost,"") ) host = pamdbhost;
  if ( strcmp(pamdbuser,"") ) user = pamdbuser;
  if ( strcmp(pamdbpsw,"") ) psw = pamdbpsw;
  fDbc = TSQLServer::Connect(host.Data(),user.Data(),psw.Data());
  //
  GL_TABLES *glt = new GL_TABLES(host,user,psw);
  if ( glt->IsConnected(fDbc) ) printf("\n DB INFORMATION:\n SQL: %s Version: %s Host %s Port %i \n\n",fDbc->GetDBMS(),fDbc->ServerInfo(),fDbc->GetHost(),fDbc->GetPort());
  //
  // Use UTC in the DB and make timeout bigger
  //
  stringstream myquery;
  myquery.str("");
  myquery << "SET time_zone='+0:00'";
  fDbc->Query(myquery.str().c_str());
  myquery.str("");
  myquery << "SET wait_timeout=173000;";
  fDbc->Query(myquery.str().c_str());
  //
  
  std:: cout << "preparing tree" << endl;

  // prepare tree
  fhBookTree->SetBranchAddress("Irun",&Irun);
  fhBookTree->SetBranchAddress("Ievnt",&Ievnt);
  fhBookTree->SetBranchAddress("Ipa",&Ipa);
  fhBookTree->SetBranchAddress("X0",&X0);
  fhBookTree->SetBranchAddress("Y0",&Y0);
  fhBookTree->SetBranchAddress("Z0",&Z0);
  fhBookTree->SetBranchAddress("Theta",&Theta);
  fhBookTree->SetBranchAddress("Phi",&Phi);
  fhBookTree->SetBranchAddress("P0",&P0);
  fhBookTree->SetBranchAddress("Nthtof",&Nthtof);
  fhBookTree->SetBranchAddress("Ipltof",Ipltof);
  fhBookTree->SetBranchAddress("Ipaddle",Ipaddle);
  fhBookTree->SetBranchAddress("Ipartof",Ipartof);
  fhBookTree->SetBranchAddress("Xintof",Xintof);
  fhBookTree->SetBranchAddress("Yintof",Yintof);
  fhBookTree->SetBranchAddress("Zintof",Zintof);
  fhBookTree->SetBranchAddress("Xouttof",Xouttof);
  fhBookTree->SetBranchAddress("Youttof",Youttof);
  fhBookTree->SetBranchAddress("Zouttof",Zouttof);
  fhBookTree->SetBranchAddress("Ereltof",Ereltof);
  fhBookTree->SetBranchAddress("Timetof",Timetof);
  fhBookTree->SetBranchAddress("Pathtof",Pathtof);
  fhBookTree->SetBranchAddress("P0tof",P0tof);
  fhBookTree->SetBranchAddress("Nthcat",&Nthcat);
  fhBookTree->SetBranchAddress("Iparcat",Iparcat);
  fhBookTree->SetBranchAddress("Icat",Icat);
  fhBookTree->SetBranchAddress("Xincat",Xincat);
  fhBookTree->SetBranchAddress("Yincat",Yincat);
  fhBookTree->SetBranchAddress("Zincat",Zincat);
  fhBookTree->SetBranchAddress("Xoutcat",Xoutcat);
  fhBookTree->SetBranchAddress("Youtcat",Youtcat);
  fhBookTree->SetBranchAddress("Zoutcat",Zoutcat);
  fhBookTree->SetBranchAddress("Erelcat",Erelcat);
  fhBookTree->SetBranchAddress("Timecat",Timecat);
  fhBookTree->SetBranchAddress("Pathcat",Pathcat);
  fhBookTree->SetBranchAddress("P0cat",P0cat);
  fhBookTree->SetBranchAddress("Nthcas",&Nthcas);
  fhBookTree->SetBranchAddress("Iparcas",Iparcas);
  fhBookTree->SetBranchAddress("Icas",Icas);
  fhBookTree->SetBranchAddress("Xincas",Xincas);
  fhBookTree->SetBranchAddress("Yincas",Yincas);
  fhBookTree->SetBranchAddress("Zincas",Zincas);
  fhBookTree->SetBranchAddress("Xoutcas",Xoutcas);
  fhBookTree->SetBranchAddress("Youtcas",Youtcas);
  fhBookTree->SetBranchAddress("Zoutcas",Zoutcas);
  fhBookTree->SetBranchAddress("Erelcas",Erelcas);
  fhBookTree->SetBranchAddress("Timecas",Timecas);
  fhBookTree->SetBranchAddress("Pathcas",Pathcas);
  fhBookTree->SetBranchAddress("P0cas",P0cas);
  fhBookTree->SetBranchAddress("Nthspe",&Nthspe);
  fhBookTree->SetBranchAddress("Iparspe",Iparspe);
  fhBookTree->SetBranchAddress("Itrpb",Itrpb);
  fhBookTree->SetBranchAddress("Itrsl",Itrsl);
  fhBookTree->SetBranchAddress("Itspa",Itspa);
  fhBookTree->SetBranchAddress("Xinspe",Xinspe);
  fhBookTree->SetBranchAddress("Yinspe",Yinspe);
  fhBookTree->SetBranchAddress("Zinspe",Zinspe);
  fhBookTree->SetBranchAddress("Xoutspe",Xoutspe);
  fhBookTree->SetBranchAddress("Youtspe",Youtspe);
  fhBookTree->SetBranchAddress("Zoutspe",Zoutspe);
  fhBookTree->SetBranchAddress("Xavspe",Xavspe);
  fhBookTree->SetBranchAddress("Yavspe",Yavspe);
  fhBookTree->SetBranchAddress("Zavspe",Zavspe);
  fhBookTree->SetBranchAddress("Erelspe",Erelspe);
  fhBookTree->SetBranchAddress("Pathspe",Pathspe);
  fhBookTree->SetBranchAddress("P0spe",P0spe);
  fhBookTree->SetBranchAddress("Nxmult",Nxmult);
  fhBookTree->SetBranchAddress("Nymult",Nymult);
  fhBookTree->SetBranchAddress("Nstrpx",&Nstrpx);
  fhBookTree->SetBranchAddress("Npstripx",Npstripx);
  fhBookTree->SetBranchAddress("Ntstripx",Ntstripx);
  fhBookTree->SetBranchAddress("Istripx",Istripx);
  fhBookTree->SetBranchAddress("Qstripx",Qstripx);
  fhBookTree->SetBranchAddress("Xstripx",Xstripx);
  fhBookTree->SetBranchAddress("Nstrpy",&Nstrpy);
  fhBookTree->SetBranchAddress("Npstripy",Npstripy);
  fhBookTree->SetBranchAddress("Ntstripy",Ntstripy);
  fhBookTree->SetBranchAddress("Istripy",Istripy);
  fhBookTree->SetBranchAddress("Qstripy",Qstripy);
  fhBookTree->SetBranchAddress("Ystripy",Ystripy);
  fhBookTree->SetBranchAddress("Nthcali",&Nthcali);
  fhBookTree->SetBranchAddress("Icaplane",Icaplane);
  fhBookTree->SetBranchAddress("Icastrip",Icastrip);
  fhBookTree->SetBranchAddress("Icamod",Icamod);
  fhBookTree->SetBranchAddress("Enestrip",Enestrip);
  fhBookTree->SetBranchAddress("Nthcal",&Nthcal);
  fhBookTree->SetBranchAddress("Icapl",Icapl);
  fhBookTree->SetBranchAddress("Icasi",Icasi);
  fhBookTree->SetBranchAddress("Icast",Icast);
  fhBookTree->SetBranchAddress("Xincal",Xincal);
  fhBookTree->SetBranchAddress("Yincal",Yincal);
  fhBookTree->SetBranchAddress("Zincal",Zincal);
  fhBookTree->SetBranchAddress("Erelcal",Erelcal);
  fhBookTree->SetBranchAddress("Nthnd",&Nthnd);
  fhBookTree->SetBranchAddress("Itubend",Itubend);
  fhBookTree->SetBranchAddress("Iparnd",Iparnd);
  fhBookTree->SetBranchAddress("Xinnd",Xinnd);
  fhBookTree->SetBranchAddress("Yinnd",Yinnd);
  fhBookTree->SetBranchAddress("Zinnd",Zinnd);
  fhBookTree->SetBranchAddress("Xoutnd",Xoutnd);
  fhBookTree->SetBranchAddress("Youtnd",Youtnd);
  fhBookTree->SetBranchAddress("Zoutnd",Zoutnd);
  fhBookTree->SetBranchAddress("Erelnd",Erelnd);
  fhBookTree->SetBranchAddress("Timend",Timend);
  fhBookTree->SetBranchAddress("Pathnd",Pathnd);
  fhBookTree->SetBranchAddress("P0nd",P0nd);
  fhBookTree->SetBranchAddress("Nthcard",&Nthcard);
  fhBookTree->SetBranchAddress("Iparcard",Iparcard);
  fhBookTree->SetBranchAddress("Icard",Icard);
  fhBookTree->SetBranchAddress("Xincard",Xincard);
  fhBookTree->SetBranchAddress("Yincard",Yincard);
  fhBookTree->SetBranchAddress("Zincard",Zincard);
  fhBookTree->SetBranchAddress("Xoutcard",Xoutcard);
  fhBookTree->SetBranchAddress("Youtcard",Youtcard);
  fhBookTree->SetBranchAddress("Zoutcard",Zoutcard);
  fhBookTree->SetBranchAddress("Erelcard",Erelcard);
  fhBookTree->SetBranchAddress("Timecard",Timecard);
  fhBookTree->SetBranchAddress("Pathcard",Pathcard);
  fhBookTree->SetBranchAddress("P0card",P0card);

  fhBookTree->SetBranchStatus("*",0); 

};



void Digitizer::Close(){

  delete fhBookTree;

};




void Digitizer::Loop() {
  //
  // opens the raw output file and loops over the events
  //
  fOutputfile.open(fFilename, ios::out | ios::binary);
  //fOutputfile.open(Form("Output%s",fFilename), ios::out | ios::binary);
  //
  // Load in memory and save at the beginning of file the calorimeter calibration
  //
  CaloLoadCalib();
  DigitizeCALOCALIB();

  //  load, digitize and write tracker calibration
  LoadTrackCalib();
  
  DigitizeTrackCalib(1);
  UInt_t length=fTracklength*2;
  DigitizePSCU(length,0x12);
  AddPadding();
  WriteTrackCalib(); 
  
  DigitizeTrackCalib(2);
  length=fTracklength*2;
  DigitizePSCU(length,0x13);
  AddPadding();
  WriteTrackCalib();
  
  LoadMipCor();  // some initialization of parameters -not used now-
  //  end loading, digitizing and writing tracker calibration

  //
  // loops over the events
  //
  
  Int_t nentries = fhBookTree->GetEntriesFast();
  Long64_t nbytes = 0;
  for (Int_t i=0; i<nentries;i++) {
    //
    nbytes += fhBookTree->GetEntry(i);
    // read detectors sequentially:
    // http://www.ts.infn.it/fileadmin/documents/physics/experiments/wizard/cpu/gen_arch/RM_Acquisition.pdf
    // on pamelatov:
    // /cvs/yoda/techmodel/physics/NeutronDetectorReader.cpp
    DigitizeTRIGGER();
    DigitizeTOF();
    DigitizeAC();
    DigitizeCALO();
    DigitizeTrack();
    DigitizeS4();
    DigitizeND();
      //
    // Add padding to 64 bits
    //
    AddPadding();
//
    // Create CPU header, we need packet type (0x10 = physics data) and packet length.
    //
    UInt_t length=2*(fCALOlength+fACbuffer+fTracklength+fNDbuffer+fS4buffer)+fPadding+fTOFbuffer+fTRIGGERbuffer;
    //UInt_t length=2*(fCALOlength+fACbuffer+fTracklength+fNDbuffer)+fPadding+fTOFbuffer+fTRIGGERbuffer;
    DigitizePSCU(length,0x10);
    if ( !i%100 ) std::cout << "writing event " << i << endl;
    WriteData();
  };

  fOutputfile.close();
  std::cout << "files closed" << endl << flush;

};

void Digitizer::AddPadding(){
  //
  Float_t pd0 = (fLen+16)/64.;
  Float_t pd1 = pd0 - (Float_t)int(pd0);
  Float_t padfrac = 64. - pd1 * 64.;
  //
  UInt_t padbytes = (UInt_t)padfrac;
  if ( padbytes > 0 && padbytes < 64 ){
    //
    // here the padding length
    //
    fPadding = padbytes+64;
    //
    // random padding bytes
    //
    for (Int_t ur=0; ur<32; ur++){
      fDataPadding[ur] = (UShort_t)rand();
    };
  };
};


void Digitizer::DigitizePSCU(UInt_t length, UChar_t type) {
  //
  UChar_t buff[16];
  //
  // CPU signature
  //  
  buff[0] = 0xFA;
  buff[1] = 0xFE;
  buff[2] = 0xDE;
  //
  // packet type (twice)
  //
  buff[3] = type;
  buff[4] = type;
  //
  // counter
  //
  fCounter++;
  while ( fCounter > 16777215 ){
    fCounter -= 16777215;
  };
  //
  buff[5] = (UChar_t)(fCounter >> 16);
  buff[6] = (UChar_t)(fCounter >> 8);
  buff[7] = (UChar_t)fCounter;
  //
  // on board time
  //
  ULong64_t obt = fOBT + 30LL;
  //
  while ( obt > 4294967295LL ){
    obt -= 4294967295LL;
  };
  fOBT = (UInt_t)obt;
  //
  buff[8] = (UChar_t)(fOBT >> 24);
  buff[9] = (UChar_t)(fOBT >> 16);
  buff[10] = (UChar_t)(fOBT >> 8);
  buff[11] = (UChar_t)fOBT;
  //
  // Packet length
  //
  fLen = length;
  //
  buff[12] = (UChar_t)(fLen >> 16);
  buff[13] = (UChar_t)(fLen >> 8);
  buff[14] = (UChar_t)fLen;
  //
  // CPU header CRC
  //
  buff[15] = (BYTE)CM_Compute_CRC16((UINT16)0, (BYTE*)&buff, (UINT32)15);
  //
  memcpy(fDataPSCU,buff,16*sizeof(UChar_t));
  //
};

void Digitizer::ClearCaloCalib(Int_t s){
  //
  fcstwerr[s] = 0;
  fcperror[s] = 0.;
  for ( Int_t d=0 ; d<11 ;d++  ){
    Int_t pre = -1;
    for ( Int_t j=0; j<96 ;j++){
      if ( j%16 == 0 ) pre++;
      fcalped[s][d][j] = 0.;
      fcstwerr[s] = 0.;
      fcperror[s] = 0.;
      fcalgood[s][d][j] = 0.;
      fcalthr[s][d][pre] = 0.;
      fcalrms[s][d][j] = 0.;
      fcalbase[s][d][pre] = 0.;
      fcalvar[s][d][pre] = 0.;
    };
  };
  return;
}

Int_t Digitizer::CaloLoadCalib(Int_t s,TString fcalname, UInt_t calibno){
  //
  //
  UInt_t e = 0;
  if ( s == 0 ) e = 0;
  if ( s == 1 ) e = 2;
  if ( s == 2 ) e = 3;
  if ( s == 3 ) e = 1;
  //
  ifstream myfile;
  myfile.open(fcalname.Data());
  if ( !myfile ){    
    return(-107);
  };
  myfile.close();
  //
  TFile *File = new TFile(fcalname.Data());
  if ( !File ) return(-108);
  TTree *tr = (TTree*)File->Get("CalibCalPed");
  if ( !tr ) return(-109);
  //
  TBranch *calo = tr->GetBranch("CalibCalPed");
  //
  pamela::CalibCalPedEvent *ce = 0;
  tr->SetBranchAddress("CalibCalPed", &ce);
  //
  Long64_t ncalibs = calo->GetEntries();
  //
  if ( !ncalibs ) return(-110); 
  //
  calo->GetEntry(calibno);
  //
  if (ce->cstwerr[s] != 0 && ce->cperror[s] == 0 ) {
    fcstwerr[s] = ce->cstwerr[s];
    fcperror[s] = ce->cperror[s];
    for ( Int_t d=0 ; d<11 ;d++  ){
      Int_t pre = -1;
      for ( Int_t j=0; j<96 ;j++){
	if ( j%16 == 0 ) pre++;
	fcalped[s][d][j] = ce->calped[e][d][j];
	fcalgood[s][d][j] = ce->calgood[e][d][j];
	fcalthr[s][d][pre] = ce->calthr[e][d][pre];
	fcalrms[s][d][j] = ce->calrms[e][d][j];
	fcalbase[s][d][pre] = ce->calbase[e][d][pre];
	fcalvar[s][d][pre] = ce->calvar[e][d][pre];
      };
    };
  } else {
    printf(" CALORIMETER - ERROR: problems finding a good calibration in this file! \n\n ");
    File->Close();
    return(-111);
  };
  File->Close();
  return(0);
}


void Digitizer::DigitizeCALOCALIB() {
  // 
  // Header of the four sections
  //
  fSecCalo[0] = 0xAA00; // XE
  fSecCalo[1] = 0xB100; // XO
  fSecCalo[2] = 0xB600; // YE
  fSecCalo[3] = 0xAD00; // YO
  //
  // length of the data is 0x1215 
  // 
  fSecCALOLength[0] = 0x1215; // XE
  fSecCALOLength[1] = 0x1215; // XO
  fSecCALOLength[2] = 0x1215; // YE
  fSecCALOLength[3] = 0x1215; // YO
  //
  Int_t chksum = 0;
  UInt_t tstrip = 0;
  UInt_t fSecPointer = 0;
  // 
  for (Int_t sec=0; sec < 4; sec++){
    //
    // sec =    0 -> XE      1 -> XO        2-> YE         3 -> YO
    //
    fCALOlength = 0;
    memset(fDataCALO,0,sizeof(UShort_t)*fCALObuffer);
    fSecPointer = fCALOlength;
    //
    // First of all we have section header and packet length
    //
    fDataCALO[fCALOlength] = fSecCalo[sec];
    fCALOlength++;
    fDataCALO[fCALOlength] = fSecCALOLength[sec];
    fCALOlength++;
    //
    // Section XO is read in the opposite direction respect to the others
    //
    chksum = 0;
    //
    for (Int_t plane=0; plane < 11; plane++){
      //
      if ( sec == 1 ) tstrip = fCALOlength + 96*2;
      //
      for (Int_t strip=0; strip < 96; strip++){   
	//
	chksum += (Int_t)fcalped[sec][plane][strip];
        //
        // save value
        // 
        if ( sec == 1 ){
          tstrip -= 2;
          fDataCALO[tstrip] = (Int_t)fcalped[sec][plane][strip];
          fDataCALO[tstrip+1] = (Int_t)fcalgood[sec][plane][strip];
        } else {
          fDataCALO[fCALOlength] = (Int_t)fcalped[sec][plane][strip];
          fDataCALO[fCALOlength+1] = (Int_t)fcalgood[sec][plane][strip];
        }; 
        fCALOlength +=2;
      };
      //
    };
    //
    fDataCALO[fCALOlength] = (UShort_t)chksum;
    fCALOlength++;
    fDataCALO[fCALOlength] = 0;
    fCALOlength++;
    fDataCALO[fCALOlength] = (UShort_t)((Int_t)(chksum >> 16));
    fCALOlength++;
    //
    // Section XO is read in the opposite direction respect to the others
    //
    chksum = 0;
    //
    for (Int_t plane=0; plane < 11; plane++){
      //
      if ( sec == 1 ) tstrip = fCALOlength+6*2;
      //
      for (Int_t strip=0; strip < 6; strip++){
        //
        chksum += (Int_t)fcalthr[sec][plane][strip];
        //
        // save value
        //
        if ( sec == 1 ){
          tstrip -= 2;
          fDataCALO[tstrip] = 0;
          fDataCALO[tstrip+1] = (Int_t)fcalthr[sec][plane][strip];
        } else {
          fDataCALO[fCALOlength] = 0;
          fDataCALO[fCALOlength+1] = (Int_t)fcalthr[sec][plane][strip];
        };
        fCALOlength +=2;
      };
      //
    };
    //
    fDataCALO[fCALOlength] = 0;
    fCALOlength++;
    fDataCALO[fCALOlength] = (UShort_t)chksum;
    fCALOlength++;
    fDataCALO[fCALOlength] = 0;
    fCALOlength++;
    fDataCALO[fCALOlength] = (UShort_t)((Int_t)(chksum >> 16));
    fCALOlength++;
    //
    // Section XO is read in the opposite direction respect to the others
    //
    for (Int_t plane=0; plane < 11; plane++){
      //
      if ( sec == 1 ) tstrip = fCALOlength+96*2;
      //
      for (Int_t strip=0; strip < 96; strip++){
        //
        // save value
        //
        if ( sec == 1 ){
          tstrip -= 2;
          fDataCALO[tstrip] = 0;
          fDataCALO[tstrip+1] = (Int_t)fcalrms[sec][plane][strip];
        } else {
          fDataCALO[fCALOlength] = 0;
          fDataCALO[fCALOlength+1] = (Int_t)fcalrms[sec][plane][strip];
        };
        fCALOlength += 2;
      };
      //
    };     
    //
    // Section XO is read in the opposite direction respect to the others
    //
    for (Int_t plane=0; plane < 11; plane++){
      //
      if ( sec == 1 ) tstrip = fCALOlength+6*4;
      //
      for (Int_t strip=0; strip < 6; strip++){
	//
        // save value
        //
        if ( sec == 1 ){
	  tstrip -= 4;
          fDataCALO[tstrip] = 0;
          fDataCALO[tstrip+1] = (Int_t)fcalbase[sec][plane][strip];
          fDataCALO[tstrip+2] = 0;
          fDataCALO[tstrip+3] = (Int_t)fcalvar[sec][plane][strip];
        } else { 
          fDataCALO[fCALOlength] = 0;
          fDataCALO[fCALOlength+1] = (Int_t)fcalbase[sec][plane][strip];
          fDataCALO[fCALOlength+2] = 0;
          fDataCALO[fCALOlength+3] = (Int_t)fcalvar[sec][plane][strip];
        };
        fCALOlength +=4;
      };
      //
    };      
    //
    //
    // here we calculate and save the CRC
    //
    fDataCALO[fCALOlength] = 0;
    fCALOlength++;
    Short_t CRC = 0;
    for (UInt_t i=0; i<(fCALOlength-fSecPointer); i++){
      CRC=crc(CRC,fDataCALO[i+fSecPointer]);
    };
    fDataCALO[fCALOlength] = (UShort_t)CRC;
    fCALOlength++;
    //
    UInt_t length=fCALOlength*2;
    DigitizePSCU(length,0x18);
    //
    // Add padding to 64 bits
    //
    AddPadding();
    //
    fOutputfile.write(reinterpret_cast<char*>(fDataPSCU),sizeof(UShort_t)*fPSCUbuffer);
    UShort_t temp[1000000];
    memset(temp,0,sizeof(UShort_t)*1000000);
    swab(fDataCALO,temp,sizeof(UShort_t)*fCALOlength);  // WE MUST SWAP THE BYTES!!!
    fOutputfile.write(reinterpret_cast<char*>(temp),sizeof(UShort_t)*fCALOlength);
    //
    // padding to 64 bytes
    //
    if ( fPadding ){
      fOutputfile.write(reinterpret_cast<char*>(fDataPadding),sizeof(UChar_t)*fPadding);
    };
    //
    //    
  };
  //
};

void Digitizer::CaloLoadCalib() {
  //
  fGivenCaloCalib = 0; //                                  ####@@@@ should be given as input par @@@@####
  //
  // first of all load the MIP to ADC conversion values
  //
  stringstream calfile;
  Int_t error = 0;
  GL_PARAM *glparam = new GL_PARAM();
  //
  // determine where I can find calorimeter ADC to MIP conversion file  
  //
  error = 0;
  error = glparam->Query_GL_PARAM(3,101,fDbc);
  //
  calfile.str("");
  calfile << glparam->PATH.Data() << "/";
  calfile << glparam->NAME.Data();
  //
  printf("\n Using Calorimeter ADC to MIP conversion file: \n %s \n",calfile.str().c_str());
  FILE *f;
  f = fopen(calfile.str().c_str(),"rb");
  //
  memset(fCalomip,0,4224*sizeof(fCalomip[0][0][0]));
  //
  for (Int_t m = 0; m < 2 ; m++ ){
    for (Int_t k = 0; k < 22; k++ ){
      for (Int_t l = 0; l < 96; l++ ){
	fread(&fCalomip[m][k][l],sizeof(fCalomip[m][k][l]),1,f);
      };
    };
  };
  fclose(f);
  //
  // determine which calibration has to be used and load it for each section
  //  
  GL_CALO_CALIB *glcalo = new GL_CALO_CALIB();
  GL_ROOT *glroot = new GL_ROOT();  
  TString fcalname;
  UInt_t idcalib;
  UInt_t calibno;
  UInt_t utime = 0;
  //
  for (UInt_t s=0; s<4; s++){
    //
    // clear calo calib variables for section s
    //
    ClearCaloCalib(s);
    //
    if ( fGivenCaloCalib ){
      //
      // a time has been given as input on the command line so retrieve the calibration that preceed that time
      //
      glcalo->Query_GL_CALO_CALIB(fGivenCaloCalib,utime,s,fDbc);
      //  
      calibno = glcalo->EV_ROOT;
      idcalib = glcalo->ID_ROOT_L0;
      //
      // determine path and name and entry of the calibration file
      //
      printf("\n");
      printf(" ** SECTION %i **\n",s);
      //
      glroot->Query_GL_ROOT(idcalib,fDbc);
      //
      stringstream name;
      name.str("");
      name << glroot->PATH.Data() << "/";
      name << glroot->NAME.Data();
      //
      fcalname = (TString)name.str().c_str();
      //
      printf("\n Section %i : using  file %s calibration at entry %i: \n",s,fcalname.Data(),calibno);
      //
    } else {
      error = 0;
      error = glparam->Query_GL_PARAM(1,104,fDbc);
      //
      calfile.str("");
      calfile << glparam->PATH.Data() << "/";
      calfile << glparam->NAME.Data();
      //
      printf("\n Section %i : using default calorimeter calibration: \n %s \n",s,calfile.str().c_str());
      //
      fcalname = (TString)calfile.str().c_str();
      calibno = s;
      //
    };
    //
    // load calibration variables in memory
    //
    CaloLoadCalib(s,fcalname,calibno);
    //
  };
  //
  // at this point we have in memory the calorimeter calibration and we can save it to disk in the correct format and use it to digitize the data
  //
  delete glparam;
  delete glcalo;
  delete glroot;
};

void Digitizer::DigitizeCALO() {
  //
  fModCalo = 0; // 0 is RAW, 1 is COMPRESS, 2 is FULL     ####@@@@ should be given as input par @@@@####
  //
  //
  // 
  fCALOlength = 0;  // reset total dimension of calo data
  //
  // gpamela variables to be used
  //
  fhBookTree->SetBranchStatus("Nthcali",1);
  fhBookTree->SetBranchStatus("Icaplane",1);
  fhBookTree->SetBranchStatus("Icastrip",1);
  fhBookTree->SetBranchStatus("Icamod",1);
  fhBookTree->SetBranchStatus("Enestrip",1);
  //
  // call different routines depending on the acq mode you want to simulate
  //
  switch ( fModCalo ){
  case 0:
    this->DigitizeCALORAW();
    break;
  case 1:
    this->DigitizeCALOCOMPRESS();
    break;
  case 2:
    this->DigitizeCALOFULL();
    break;
  };
  //
};

Float_t Digitizer::GetCALOen(Int_t sec, Int_t plane, Int_t strip){
  //
  // determine plane and strip
  //
  Int_t mplane = 0;
  //
  // wrong!
  // 
  //  if ( sec == 0 || sec == 3 ) mplane = (plane * 4) + sec + 1;  
  //  if ( sec == 1 ) mplane = (plane * 4) + 2 + 1;  
  //  if ( sec == 2 ) mplane = (plane * 4) + 1 + 1;  
  //
  if ( sec == 0 ) mplane = plane * 4 + 1; // it must be 0, 4, 8, ... (+1)  from plane = 0, 11
  if ( sec == 1 ) mplane = plane * 4 + 2 + 1; // it must be 2, 6, 10, ... (+1)  from plane = 0, 11
  if ( sec == 2 ) mplane = plane * 4 + 3 + 1; // it must be 3, 7, 11, ... (+1)  from plane = 0, 11
  if ( sec == 3 ) mplane = plane * 4 + 1 + 1; // it must be 1, 5, 9, ... (+1)  from plane = 0, 11
  //
  Int_t mstrip = strip + 1;
  //
  // search energy release in gpamela output
  //
  for (Int_t i=0; i<Nthcali;i++){
    if ( Icaplane[i] == mplane && Icastrip[i] == mstrip ){
      return (Enestrip[i]);
    };
  };
  //
  // if not found it means no energy release so return 0.
  //
  return(0.);
};

void Digitizer::DigitizeCALORAW() {
  //
  // some variables
  //
  Float_t ens = 0.;
  UInt_t adcsig = 0;
  UInt_t adcbase = 0;
  UInt_t adc = 0;
  Int_t pre = 0;
  UInt_t l = 0;
  UInt_t lpl = 0;
  UInt_t tstrip = 0;
  UInt_t fSecPointer = 0;
  Double_t pedenoise;
  Float_t rms = 0.;
  Float_t pedestal = 0.;
  //
  // clean the data structure
  //
  memset(fDataCALO,0,sizeof(UShort_t)*fCALObuffer);
  //
  // Header of the four sections
  //
  fSecCalo[0] = 0xEA08; // XE
  fSecCalo[1] = 0xF108; // XO
  fSecCalo[2] = 0xF608; // YE 
  fSecCalo[3] = 0xED08; // YO
  //
  // length of the data is 0x0428 in RAW mode
  //
  fSecCALOLength[0] = 0x0428; // XE
  fSecCALOLength[1] = 0x0428; // XO
  fSecCALOLength[2] = 0x0428; // YE
  fSecCALOLength[3] = 0x0428; // YO
  //
  // let's start
  //
  fCALOlength = 0;
  //
  for (Int_t sec=0; sec < 4; sec++){
    //
    // sec =    0 -> XE      1 -> XO        2-> YE         3 -> YO
    //
    l = 0;                 // XE and XO are Y planes 
    if ( sec < 2 ) l = 1;  // while YE and  YO are X planes
    //
    fSecPointer = fCALOlength;
    //
    // First of all we have section header and packet length
    //
    fDataCALO[fCALOlength] = fSecCalo[sec];
    fCALOlength++;
    fDataCALO[fCALOlength] = fSecCALOLength[sec];
    fCALOlength++;
    //
    // selftrigger coincidences - in the future we should add here some code to simulate timing response of pre-amplifiers
    //
    for (Int_t autoplane=0; autoplane < 7; autoplane++){
      fDataCALO[fCALOlength] = 0x0000;
      fCALOlength++;
    };
    //
    //
    // here comes data
    //
    //
    // Section XO is read in the opposite direction respect to the others
    //
    if ( sec == 1 ){	  
      tstrip = 96*11 + fCALOlength;
    } else {
      tstrip = 0;
    };
    //
    pre = -1;
    //
    for (Int_t strip=0; strip < 96; strip++){   
      //
      // which is the pre for this strip?
      //
      if (strip%16 == 0) {
	pre++;
      };
      //
      if ( sec == 1 ) tstrip -= 11;
      //
      for (Int_t plane=0; plane < 11; plane++){
	//
	// here is wrong!!!!
	//
	//
	//	if ( plane%2 == 0 && sec%2 != 0){
	//	  lpl = plane*2;
	//	} else {
	//	  lpl = (plane*2) + 1;
	//	};
	//
	if ( sec == 0 || sec == 3 ) lpl = plane * 2;
	if ( sec == 1 || sec == 2 ) lpl = (plane * 2) + 1;
	//
	// get the energy in GeV from the simulation for that strip
	//
	ens = this->GetCALOen(sec,plane,strip);	
	//
	// convert it into ADC channels
	//	
	adcsig = int(ens*fCalomip[l][lpl][strip]/fCALOGeV2MIPratio);
	//
	// sum baselines
	//
	adcbase = (UInt_t)fcalbase[sec][plane][pre]; 
	//
	// add noise and pedestals
	//	
	pedestal = fcalped[sec][plane][strip];
	rms = fcalrms[sec][plane][strip]/4.;
	//
	// Add random gaussian noise of RMS rms and Centered in the pedestal
	// 
	pedenoise = gRandom->Gaus((Double_t)pedestal,(Double_t)rms); 
	//
	// Sum all contribution
	//
	adc = adcsig + adcbase + (Int_t)round(pedenoise);
	//
	// Signal saturation
	//
	if ( adc > 0x7FFF ) adc = 0x7FFF;
	//
	// save value
	//
	if ( sec == 1 ){
	  fDataCALO[tstrip] = adc;
	  tstrip++;
	} else {
	  fDataCALO[fCALOlength] = adc;
	};
	fCALOlength++;
	//
      };
      //
      if ( sec == 1 ) tstrip -= 11;
      //
    };
    //
    // here we calculate and save the CRC
    //
    Short_t CRC = 0;
    for (UInt_t i=0; i<(fCALOlength-fSecPointer); i++){
      CRC=crc(CRC,fDataCALO[i+fSecPointer]);
    };
    fDataCALO[fCALOlength] = (UShort_t)CRC;
    fCALOlength++;
    //
  };
  //
  //   for (Int_t i=0; i<fCALOlength; i++){
  //     printf(" WORD %i       DIGIT %0x   \n",i,fDataCALO[i]);
  //   };
  //
};

void Digitizer::DigitizeCALOCOMPRESS() {
  //
  printf(" COMPRESS MODE STILL NOT IMPLEMENTED! \n");  
  //
  this->DigitizeCALORAW();
  return;
  //
  //
  //
  fSecCalo[0] = 0xEA00;
  fSecCalo[1] = 0xF100;
  fSecCalo[2] = 0xF600;
  fSecCalo[3] = 0xED00;
  //
  // length of the data in DSP mode must be calculated on fly during digitization
  //
  memset(fSecCALOLength,0x0,4*sizeof(UShort_t));
  //
  // here comes raw data
  //
  Int_t en = 0;
  //
  for (Int_t sec=0; sec < 4; sec++){
    fDataCALO[en] = fSecCalo[sec];
    en++;
    fDataCALO[en] = fSecCALOLength[sec];
    en++;
    for (Int_t plane=0; plane < 11; plane++){
      for (Int_t strip=0; strip < 11; strip++){
	fDataCALO[en] = 0x0;
	en++;
      };
    };
  };
  //
};

void Digitizer::DigitizeCALOFULL() {
  //
  printf(" FULL MODE STILL NOT IMPLEMENTED! \n");  
  //
  this->DigitizeCALORAW();
  return;
  //
  fSecCalo[0] = 0xEA00;
  fSecCalo[1] = 0xF100;
  fSecCalo[2] = 0xF600;
  fSecCalo[3] = 0xED00;
  //
  // length of the data in DSP mode must be calculated on fly during digitization
  //
  memset(fSecCALOLength,0x0,4*sizeof(UShort_t));
  //
  // here comes raw data
  //
  Int_t  en = 0;
  //
  for (Int_t sec=0; sec < 4; sec++){
    fDataCALO[en] = fSecCalo[sec];
    en++;
    fDataCALO[en] = fSecCALOLength[sec];
    en++;
    for (Int_t plane=0; plane < 11; plane++){
      for (Int_t strip=0; strip < 11; strip++){
	fDataCALO[en] = 0x0;
	en++;
      };
    };
  };
  //
};

void Digitizer::DigitizeTRIGGER() {
  //fDataTrigger: 153 bytes
  for (Int_t j=0; j < 153; j++)
    fDataTrigger[j]=0x00;
};

Int_t Digitizer::DigitizeTOF() {
  //fDataTof: 12 x 23 bytes (=276 bytes)
  UChar_t *pTof=fDataTof;
  Bool_t DEBUG=false;

  // --- activate branches:
  fhBookTree->SetBranchStatus("Nthtof",1);
  fhBookTree->SetBranchStatus("Ipltof",1);
  fhBookTree->SetBranchStatus("Ipaddle",1);
  fhBookTree->SetBranchStatus("Xintof",1);
  fhBookTree->SetBranchStatus("Yintof",1);
  fhBookTree->SetBranchStatus("Xouttof",1);
  fhBookTree->SetBranchStatus("Youttof",1);
  fhBookTree->SetBranchStatus("Ereltof",1);
  fhBookTree->SetBranchStatus("Timetof",1);
  // not yet used: Zintof, Xouttof, Youttof, Zouttof

  // ------ evaluate energy in each pmt: ------
  // strip geometry (lenght/width)
  Float_t dimel[6] = {33.0, 40.8 ,18.0, 15.0, 15.0, 18.0};
  //Float_t dimes[6] = {5.1, 5.5, 7.5, 9.0, 6.0, 5.0};
  
  //  S11 8 paddles  33.0 x 5.1 cm
  //  S12 6 paddles  40.8 x 5.5 cm
  //  S21 2 paddles  18.0 x 7.5 cm
  //  S22 2 paddles  15.0 x 9.0 cm
  //  S31 3 paddles  15.0 x 6.0 cm
  //  S32 3 paddles  18.0 x 5.0 cm

  Float_t FGeo[2]={0., 0.}; /* geometrical factor */
 
  const Float_t Pho_keV = 10.;     // photons per keV in scintillator
  const Float_t echarge = 1.6e-19; // electron charge
  Float_t Npho=0.;
  Float_t QevePmt_pC[48];
  Float_t QhitPad_pC[2]={0., 0.};
  Float_t QhitPmt_pC[2]={0., 0.};
  Float_t pmGain = 3.5e6;  /* PMT Gain: the same for all PMTs */
  Float_t effi=0.21;       /* Efficienza di fotocatodo */

  Float_t ADC_pC0=-58.1;      //  ADC/pC conversion coefficient 0
  Float_t ADC_pC1=1.728;      //  ADC/pC conversion coefficient 1 
  Float_t ADC_pC2=-4.063e-05; //  ADC/pC conversion coefficient 2
  Float_t ADC_pC3=-5.763e-08; //  ADC/pC conversion coefficient 3

  Float_t pCthres=40.;     // threshold in charge
  Int_t ADClast=4095;      // no signal --> ADC ch=4095
  Int_t ADCsat=3100;       // saturation value for the ADCs
  Int_t ADCtof[48];


// ---- introduce scale factors to tune simul ADC to real data   24-oct DC
  Float_t ScaleFact[48]={0.18,0.22,0.35,0.26,0.47,0.35,0.31,0.37,
			 0.44,0.23,0.38,0.60,0.39,0.29,0.40,0.23,
			 0.30,0.66,0.22,1.53,0.17,0.55,
			 0.84,0.19,0.21,1.64,0.62,0.13,
			 0.18,0.15,0.10,0.14,0.14,0.14,0.14,0.12,
			 0.26,0.18,0.25,0.23,0.20,0.40,
			 0.19,0.23,0.25,0.23,0.25,0.20};
  
  for(Int_t i=0; i<48; i++){
    QevePmt_pC[i] = 0;
    ADCtof[i]=0;
  }
  
  // ------ read calibration file (get A1, A2, lambda1, lambda2)
  ifstream fileTriggerCalib;
  TString ftrigname="TrigCalibParam.txt";
  fileTriggerCalib.open(ftrigname.Data());
  if ( !fileTriggerCalib ) {
    printf("debug: no trigger calib file!\n");
    return(-117); //check output!
  };
  Float_t atte1[48],atte2[48],lambda1[48],lambda2[48];
  Int_t temp=0;
  // correct readout WM Oct '07
  for(Int_t i=0; i<48; i++){
    fileTriggerCalib >> temp;
    fileTriggerCalib >> atte1[i];
    fileTriggerCalib >> lambda1[i];
    fileTriggerCalib >> atte2[i];
    fileTriggerCalib >> lambda2[i];
    fileTriggerCalib >> temp;
  }
  fileTriggerCalib.close();

  Int_t ip, ipad;
  //Int_t ipmt;
  Int_t pmtleft=0, pmtright=0;
  Int_t *pl, *pr;
  pl = &pmtleft;
  pr = &pmtright;

  // TDC variables:
  Int_t TDClast=4095;      // no signal --> TDC ch=4095
  Int_t TDCint[48];
  Float_t  tdc[48],tdc1[48],tdcpmt[48];
  for(Int_t i=0; i<48; i++) {
    tdcpmt[i] = 1000.; 
    tdc[i]  = 0.;            // 18-oct WM
    tdc1[i] = 0.;            // 18-oct WM
  } 

  Float_t thresh=10.; // to be defined better... (Wolfgang)

  // === TDC: simulate timing for each paddle
  Float_t dt1 = 285.e-12 ;   // single PMT resolution
  //    Float_t dt1 = 10.e-12 ;   // TEST
  Float_t tdcres[50],c1_S[50],c2_S[50],c3_S[50]; 
  for(Int_t j=0;j<48;j++)  tdcres[j] = 50.E-12;   // TDC resolution 50 picosec
  for(Int_t j=0;j<48;j++)  c1_S[j] = 500.;  // cable length in channels
  for(Int_t j=0;j<48;j++)  c2_S[j] = 0.;
  for(Int_t j=0;j<48;j++)  c3_S[j] = 1000.;
  for(Int_t j=0;j<48;j++)  c1_S[j] = c1_S[j]*tdcres[j];   // cable length in sec 
  for(Int_t j=0;j<48;j++)  c2_S[j] = c2_S[j]*tdcres[j];
  // ih = 0 + i1;  // not used?? (Silvio)

  /* **********************************  start loop over hits */
  
  for(Int_t nh=0; nh<Nthtof; nh++){
    
    Float_t s_l_g[6] = {8.0, 8.0, 20.9, 22.0, 9.8, 8.3 };  // length of the lightguide
    Float_t t1,t2,veff,veff1,veff0 ;
    veff0 = 100.*1.0e8 ; // light velocity in the scintillator in m/sec
    veff1 = 100.*1.5e8; // light velocity in the lightguide in m/sec
    veff=veff0;         // signal velocity in the paddle

    t1 = Timetof[nh] ;  // Start
    t2 = Timetof[nh] ;

    // Donatella: redefinition plane and pad for vectors in C
    ip = Ipltof[nh]-1;
    ipad = Ipaddle[nh]-1;
    pmtleft=0; 
    pmtright=0;
  
    if (ip<6) {
      Paddle2Pmt(ip, ipad, &pmtleft, &pmtright);
 
      // DC: evaluates mean position and path inside the paddle
  
      Float_t tpos=0.;
      Float_t path[2] = {0., 0.};
      //--- Strip in Y = S11,S22,S31 ------
      if(ip==0 || ip==3 || ip==4)
	tpos = (Yintof[nh]+Youttof[nh])/2.;
      else 
	if(ip==1 || ip==2 || ip==5)   //--- Strip in X per S12,S21,S32 
	  tpos = (Xintof[nh]+Xouttof[nh])/2.;
	else //if (ip!=6)
	  printf("*** WARNING TOF: this option should never occur! (ip=%2i, nh=%2i)\n",ip,nh);

      path[0]= tpos + dimel[ip]/2.;   // path to left PMT
      path[1]= dimel[ip]/2.- tpos;    // path to right PMT

      //  cout <<"Strip N. ="<< ipaddle <<" piano n.= "<< iplane <<" POSIZ = "<< tpos <<"\n";
      
      if (DEBUG) {
	cout <<" plane "<<ip<<" strip # ="<< ipad <<" tpos  "<< tpos <<"\n";
	cout <<"pmtleft, pmtright "<<pmtleft<<" "<<pmtright<<endl;
      }
      
      // constant geometric factor, for the moment
      FGeo[0] =0.5;
      FGeo[1] =0.5; 
      //  FGeo[1] = atan(path[1]/dimes[ip])/6.28318; // fraction of photons toward SX
      //  FGeo[2] = atan(path[2]/dimes[ip])/6.28318; // toward DX
      
      
      //  Npho = Poisson(ERELTOF[nh])*Pho_keV*1e6  Poissonian fluctuations to be inserted-DC
      Npho = Ereltof[nh]*Pho_keV*1.0e6;  // Eloss in GeV 
      
      Float_t knorm[2]={0., 0.}; // Donatella
      Float_t Atten[2]={0., 0.}; // Donatella
      for(Int_t j=0; j<2; j++){
	QhitPad_pC[j]= Npho*FGeo[j]*effi*pmGain*echarge*1.E12; // corrected WM
	// WM
	knorm[j]=atte1[pmtleft+j]*exp(lambda1[pmtleft+j]*dimel[ip]/2.*pow(-1,j+1)) + 
	  atte2[pmtleft+j]*exp(lambda2[pmtleft+j]*dimel[ip]/2.*pow(-1,j+1));
	Atten[j]=atte1[pmtleft+j]*exp(tpos*lambda1[pmtleft+j]) + 
	  atte2[pmtleft+j]*exp(tpos*lambda2[pmtleft+j]) ;
	QhitPmt_pC[j]= QhitPad_pC[j]*Atten[j]/knorm[j];
	//       	QhitPmt_pC[j]= QhitPad_pC[j]; //no attenuation


	if (DEBUG) {
	  cout<<"pmtleft "<<pmtleft<<" j "<<j<<endl;
	  cout<<" atte1 "<<atte1[pmtleft+j]<<"lambda1 "<<lambda1[pmtleft+j]<<" atte2 "<<atte2[pmtleft+j]<<"lambda2 "<<lambda2[pmtleft+j] <<endl;    
	  cout<<j<<" tpos "<<tpos<<" knorm "<<knorm[j]<<" "<<Atten[j]<<" "<<"QhitPmt_pC "<<QhitPmt_pC[j]<<endl;    
	}
      }
      
      if (DEBUG)
	cout<<"Npho "<<Npho<<" QhitPmt_pC "<<QhitPmt_pC[0]<<" "<<QhitPmt_pC[1]<<endl;   
      
      QevePmt_pC[pmtleft]  += QhitPmt_pC[0];
      QevePmt_pC[pmtright] += QhitPmt_pC[1];
      
      // TDC
// WM right and left <->
//      t2 = t2 + fabs(path[0]/veff) + s_l_g[ip]/veff1 ;  // Signal reaches PMT
//      t1 = t1 + fabs(path[1]/veff) + s_l_g[ip]/veff1;

      t1 = t1 + fabs(path[0]/veff) + s_l_g[ip]/veff1;
      t2 = t2 + fabs(path[1]/veff) + s_l_g[ip]/veff1 ;  // Signal reaches PMT
      
      Float_t t1save = t1;
      Float_t t2save = t2;

/*
      TRandom r;
// This does not work... WM -  but works in my simulation code ??
//      t1 = r.Gaus(t1,dt1);  //apply gaussian error  dt
//      t2 = r.Gaus(t2,dt1);  //apply gaussian error  dt
*/      
        t1 = gRandom->Gaus(t1,dt1); //apply gaussian error  dt
	t2 = gRandom->Gaus(t2,dt1); //apply gaussian error  dt

//      cout<<1E12*(t1save-t1)<<" "<<1E12*(t2save-t2)<<endl;

      t1 = t1 + c1_S[pmtleft] ;  // Signal reaches Discriminator ,TDC starts  to run
      t2 = t2 + c1_S[pmtright] ;
      
      // check if signal is above threshold
      // then check if tdcpmt is already filled by another hit...
      // only re-fill if time is smaller
      
      if (QhitPmt_pC[0] > thresh) {
	if (tdcpmt[pmtleft] == 1000.) {  // fill for the first time
	  tdcpmt[pmtleft] = t1;
	  tdc[pmtleft] = t1 + c2_S[pmtleft] ;  // Signal reaches Coincidence
	}
	if (tdcpmt[pmtleft] < 1000.) // is already filled!
	  if (t1 <  tdcpmt[pmtleft]) {
	    tdcpmt[pmtleft] = t1;
	    t1 = t1 + c2_S[pmtleft] ;  // Signal reaches Coincidence
	    tdc[pmtleft] = t1;
	  }
      }      
      if (QhitPmt_pC[1] > thresh) {
	if (tdcpmt[pmtright] == 1000.) {  // fill for the first time
	  tdcpmt[pmtright] = t2;
	  tdc[pmtright] = t2 + c2_S[pmtright] ;  // Signal reaches Coincidence
	}
	if (tdcpmt[pmtright] < 1000.)  // is already filled!
	  if (t2 <  tdcpmt[pmtright]) {
	    tdcpmt[pmtright] = t2;
	    t2 = t2 + c2_S[pmtright] ;
	    tdc[pmtright] = t2;
	  }      
      }

      if (DEBUG)
	cout<<nh<<" "<<Timetof[nh]<<" "<<t1<<" "<<t2<<endl;

    } // ip < 6

  }; // ****************************************       end loop over hits
  
  // ======  ADC ======


  for(Int_t i=0; i<48; i++){
    if(QevePmt_pC[i] >= pCthres){
      ADCtof[i]= (Int_t)(ADC_pC0 + ADC_pC1*QevePmt_pC[i] + ADC_pC2*pow(QevePmt_pC[i],2) + ADC_pC3*pow(QevePmt_pC[i],3));
  } else 
      ADCtof[i]= ADClast;   
}
  
// ---- introduce scale factors to tune simul ADC to real data   24-oct DC

  for(Int_t i=0; i<48; i++){
    if(ADCtof[i] != ADClast){
                             //      printf("%3d, %4d, %4.2f\n",i, ADCtof[i],ScaleFact[i]);
      ADCtof[i]= Int_t (ADCtof[i]*ScaleFact[i]);
                             //      printf("%3d, %4d,\n",i, ADCtof[i]);
    }
  }

  for(Int_t i=0; i<48; i++){
    if(ADCtof[i] != ADClast){
      if(ADCtof[i]> ADCsat) ADCtof[i]=ADCsat;
      else if(ADCtof[i]< 0) ADCtof[i]=ADClast;    
  }
  }    
  // ======  build  TDC coincidence  ======

  Float_t t_coinc = 0;
  Int_t ilast = 100;
  for (Int_t ii=0; ii<48;ii++)
    if (tdc[ii] > t_coinc) {
      t_coinc = tdc[ii];
      ilast = ii;
    }
  
  //     cout<<ilast<<" "<<t_coinc<<endl;
  //     At t_coinc  trigger condition is fulfilled
  
  for (Int_t ii=0; ii<48;ii++){
    //      if (tdc[ii] != 0) tdc1[ii] = t_coinc - tdc[ii];   // test 1
    if (tdc[ii] != 0) tdc1[ii] = t_coinc - tdcpmt[ii];  // test 2
    tdc1[ii] = tdc1[ii]/tdcres[ii];                     // divide by TDC resolution 
    if (tdc[ii] != 0) tdc1[ii] = tdc1[ii] + c3_S[ii];  // add cable length c3

  } // missing parenthesis inserted! (Silvio)

  for(Int_t i=0; i<48; i++){
    if(tdc1[i] != 0.){
      TDCint[i]=(Int_t)tdc1[i];
      if (TDCint[i]>4093) TDCint[i]=TDClast;  // 18-oct WM
      if (DEBUG)
	cout<<i<<" "<<TDCint[i]<<endl;
      //ADC[i]= ADC_pC * QevePmt_pC[i] + ADCoffset;
      //if(ADC[i]> ADClast) ADC[i]=ADClast;
    } else
      TDCint[i]= TDClast;
  }

  if (DEBUG)
    cout<<"-----------"<<endl;
 

//------ use channelmap  18-oct WM

Int_t  channelmap[] =  {3,21,11,29,19,45,27,37,36,28,44,20,5,12,13,4,
			6,47,14,39,22,31,30,23,38,15,46,7,0,33,16,24,
			8,41,32,40,25,17,34,9,42,1,2,10,18,26,35,43};

  Int_t ADChelp[48];
  Int_t TDChelp[48];

  for(Int_t i=0; i<48; i++){
      Int_t ii=channelmap[i];
      ADChelp[ii]= ADCtof[i];
      TDChelp[ii]= TDCint[i];
                          }

  for(Int_t i=0; i<48; i++){
      ADCtof[i]= ADChelp[i];
      TDCint[i]= TDChelp[i];
                          }


/*
//--- fake data ------------------------
  for(Int_t i=0; i<48; i++){
      ADCtof[i]= 100 + 10*i;
      TDCint[i]= 800 + 10*i;
//      cout<<i<<" "<<ADCtof[i]<<" "<<TDCint[i]<<endl; 
                          }
*/

/*
  for(Int_t i=0; i<48; i++){
   if (((ADCtof[i]>0)&&(ADCtof[i]<4095)) || ((TDCint[i]>0)&&(TDCint[i]<4095)))  cout<<i<<" "<<ADCtof[i]<<" "<<TDCint[i]<<endl; 
                          }
*/


// ======  write fDataTof  =======


//  UChar_t tdcadd[8]={1,0,3,2,5,4,7,6};  (coded in 3 bit)
  UChar_t Ctrl3bit[8]={32,0,96,64,160,128,224,192};  // DC (msb in 8 bit word )
   
  UChar_t tofBin;
  for (Int_t j=0; j < 12; j++){   // loop on TDC #12
    Int_t j12=j*23;               // for each TDC 23 bytes (8 bits)
    fDataTof[j12+0]=0x00;   // TDC_ID
    fDataTof[j12+1]=0x00;   // EV_COUNT
    fDataTof[j12+2]=0x00;   // TDC_MASK (1)
    fDataTof[j12+3]=0x00;   // TDC_MASK (2)
    for (Int_t k=0; k < 4; k++){   // for each TDC 4 channels (ADC+TDC)
          
      Int_t jk12=j12+4*k;         // ADC,TDC channel (0-47)

      tofBin =(UChar_t)(ADCtof[k+4*j]/256);   // ADC# (msb) 
      fDataTof[jk12+4] = Bin2GrayTof(tofBin,fDataTof[jk12+4]);
      /* control bits inserted here, after the bin to gray conv - DC*/ 
      fDataTof[jk12+4] = Ctrl3bit[2*k] | fDataTof[jk12+4];
      tofBin=(UChar_t)(ADCtof[k+4*j]%256);   // ADC# (lsb)
      fDataTof[jk12+5] = Bin2GrayTof(tofBin,fDataTof[jk12+5]);
      tofBin=(UChar_t)(TDCint[k+4*j]/256);   // TDC# (msb)
      fDataTof[jk12+6]=Bin2GrayTof(tofBin,fDataTof[jk12+6]);
      /* control bits inserted here, after the bin to gray conv - DC*/ 
      fDataTof[jk12+6] = Ctrl3bit[2*k+1] | fDataTof[jk12+6];
      tofBin=(UChar_t)(TDCint[k+4*j]%256);   // TDC# (lsb)
      fDataTof[jk12+7]=Bin2GrayTof(tofBin,fDataTof[jk12+7]);
    };
    fDataTof[j12+20]=0x00;   // TEMP1
    fDataTof[j12+21]=0x00;   // TEMP2
    fDataTof[j12+22]= EvaluateCrcTof(pTof);   // CRC
    pTof+=23;
  };
  return(0);
};


UChar_t Digitizer::Bin2GrayTof(UChar_t binaTOF,UChar_t grayTOF){
  union graytof_data {
    UChar_t word;
    struct bit_field {
      unsigned b0:1;
      unsigned b1:1;
      unsigned b2:1;
      unsigned b3:1;
      unsigned b4:1;
      unsigned b5:1;
      unsigned b6:1;
      unsigned b7:1;
    } bit;
  } bi,gr;
  //
  bi.word = binaTOF;
  gr.word = grayTOF;
  // 
  gr.bit.b0 = bi.bit.b1 ^ bi.bit.b0;
  gr.bit.b1 = bi.bit.b2 ^ bi.bit.b1;
  gr.bit.b2 = bi.bit.b3 ^ bi.bit.b2;
  gr.bit.b3 = bi.bit.b3;
  //
  /* bin to gray conversion 4 bit per time*/
  //
  gr.bit.b4 = bi.bit.b5 ^ bi.bit.b4;
  gr.bit.b5 = bi.bit.b6 ^ bi.bit.b5;
  gr.bit.b6 = bi.bit.b7 ^ bi.bit.b6;
  gr.bit.b7 = bi.bit.b7;
  //
  return(gr.word); 
}

UChar_t Digitizer::EvaluateCrcTof(UChar_t *pTof) {
  Bool_t DEBUG=false;
  if (DEBUG)
    return(0x00);

  UChar_t crcTof=0x00;
  UChar_t *pc=&crcTof, *pc2;
  pc2=pTof;
  for (Int_t jp=0; jp < 23; jp++){
    //crcTof = crc8(...)
    Crc8Tof(pc2++,pc);
    //    printf("%2i --- %x\n",jp,crcTof);
  }
  return(crcTof);
}

void Digitizer::Crc8Tof(UChar_t *oldCRC, UChar_t *crcTof){
  union crctof_data {
    UChar_t word;
    struct bit_field {
      unsigned b0:1;
      unsigned b1:1;
      unsigned b2:1;
      unsigned b3:1;
      unsigned b4:1;
      unsigned b5:1;
      unsigned b6:1;
      unsigned b7:1;
    } bit;
  } c,d,r;

  c.word = *oldCRC;
  //d.word = *newCRC;
  d.word = *crcTof;
  r.word = 0;

  r.bit.b0 = c.bit.b7 ^ c.bit.b6 ^ c.bit.b0 ^ 
             d.bit.b0 ^ d.bit.b6 ^ d.bit.b7;

  r.bit.b1 = c.bit.b6 ^ c.bit.b1 ^ c.bit.b0 ^ 
             d.bit.b0 ^ d.bit.b1 ^ d.bit.b6;

  r.bit.b2 = c.bit.b6 ^ c.bit.b2 ^ c.bit.b1 ^ c.bit.b0 ^
             d.bit.b0 ^ d.bit.b1 ^ d.bit.b2 ^ d.bit.b6;

  r.bit.b3 = c.bit.b7 ^ c.bit.b3 ^ c.bit.b2 ^ c.bit.b1 ^ 
             d.bit.b1 ^ d.bit.b2 ^ d.bit.b3 ^ d.bit.b7;

  r.bit.b4 = c.bit.b4 ^ c.bit.b3 ^ c.bit.b2 ^
             d.bit.b2 ^ d.bit.b3 ^ d.bit.b4;

  r.bit.b5 = c.bit.b5 ^ c.bit.b4 ^ c.bit.b3 ^
             d.bit.b3 ^ d.bit.b4 ^ d.bit.b5;

  r.bit.b6 = c.bit.b6 ^ c.bit.b5 ^ c.bit.b4 ^ 
             d.bit.b4 ^ d.bit.b5 ^ d.bit.b6;

  r.bit.b7 = c.bit.b7 ^ c.bit.b6 ^ c.bit.b5 ^ 
             d.bit.b5 ^ d.bit.b6 ^ d.bit.b7 ;

  *crcTof=r.word;
  //return r.word; 
};

//void Digitizer::Paddle2Pmt(Int_t plane, Int_t paddle, Int_t* &pmtleft, Int_t* &pmtright){
void Digitizer::Paddle2Pmt(Int_t plane, Int_t paddle, Int_t *pl, Int_t *pr){
  //* @param plane    (0 - 5)
  //* @param paddle   (plane=0, paddle = 0,...5)
  //* @param padid    (0 - 23)  
  //
  Int_t padid=-1;
  Int_t pads[6]={8,6,2,2,3,3};
  //
  Int_t somma=0;
  Int_t np=plane;
  for(Int_t j=0; j<np; j++)
    somma+=pads[j];
  padid=paddle+somma;
  *pl = padid*2;
  //  *pr = *pr + 1; 
  *pr = *pl + 1; // WM
};

void Digitizer::DigitizeAC() {
  // created:  J. Conrad, KTH
  // modified: S. Orsi, INFN Roma2
  // fDataAC[0-63]:   main AC board
  // fDataAC[64-127]: extra AC board

  fDataAC[0] = 0xACAC;
  fDataAC[64]= 0xACAC;
  fDataAC[1] = 0xAC11;   
  fDataAC[65] = 0xAC22;  

  // the third word is a status word (dummy: "no errors are present in the AC boards")
  fDataAC[2] = 0xFFFF; //FFEF?
  fDataAC[66] = 0xFFFF;

  const UInt_t nReg = 6;

  // FPGA Registers (dummy)
  for (UInt_t i=0; i<=nReg; i++){
    fDataAC[i+4] = 0xFFFF;
    fDataAC[i+68] = 0xFFFF;
  }

  // the last word is a CRC
  // Dummy for the time being, but it might need to be calculated in the end
  fDataAC[63] = 0xABCD;
  fDataAC[127] = 0xABCD;

  // shift registers (moved to the end of the routine)

  Int_t evntLSB=Ievnt%65536;
  Int_t evntMSB=(Int_t)(Ievnt/65536);

  // singles counters are dummy
  for (UInt_t i=0; i<=15; i++){  //SO Oct '07: // for (UInt_t i=0; i<=16; i++){
    //     fDataAC[i+26] = 0x0000;   
    //     fDataAC[i+90] = 0x0000;
    fDataAC[i+26] = evntLSB;
    fDataAC[i+90] = evntLSB;
  };
  
  // coincidences are dummy (increment by 1 at each event)
  // for (UInt_t i=0; i<=7; i++){
  //    fDataAC[i+42] = 0x0000;
  //    fDataAC[i+106] = 0x0000;
  //   }
  for (UInt_t i=0; i<=7; i++){
    fDataAC[i+42] = evntLSB;
    fDataAC[i+106] = evntLSB;
  };

  // increments for every trigger might be needed at some point.
  // dummy for now
  fDataAC[50]  = 0x0000;
  fDataAC[114] = 0x0000;

  // dummy FPGA clock (increment by 1 at each event)
  /*     
    fDataAC[51] = 0x006C;
    fDataAC[52] = 0x6C6C;
    fDataAC[115] = 0x006C;
    fDataAC[116] = 0x6C6C;
  */
  if (Ievnt<=0xFFFF) {
    fDataAC[51] = 0x0000;
    fDataAC[52] = Ievnt;
    fDataAC[115] = 0x0000;
    fDataAC[116] = Ievnt;
  } else {
    fDataAC[51] = evntMSB;
    fDataAC[52] = evntLSB;
    fDataAC[115] = fDataAC[51];
    fDataAC[116] = fDataAC[52];
  }

  // dummy temperatures
  fDataAC[53] = 0x0000;
  fDataAC[54] = 0x0000;
  fDataAC[117] = 0x0000;
  fDataAC[118] = 0x0000;


  // dummy DAC thresholds
  for (UInt_t i=0; i<=7; i++){
    fDataAC[i+55] = 0x1A13;  
    fDataAC[i+119] = 0x1A13;
  }
  
  // We activate all branches. Once the digitization algorithm is determined 
  // only the branches that involve needed information will be activated
  
  fhBookTree->SetBranchAddress("Ievnt",&Ievnt);
  fhBookTree->SetBranchStatus("Nthcat",1);
  fhBookTree->SetBranchStatus("Iparcat",1);
  fhBookTree->SetBranchStatus("Icat",1);
  fhBookTree->SetBranchStatus("Xincat",1);
  fhBookTree->SetBranchStatus("Yincat",1);
  fhBookTree->SetBranchStatus("Zincat",1);
  fhBookTree->SetBranchStatus("Xoutcat",1);
  fhBookTree->SetBranchStatus("Youtcat",1);
  fhBookTree->SetBranchStatus("Zoutcat",1);
  fhBookTree->SetBranchStatus("Erelcat",1);
  fhBookTree->SetBranchStatus("Timecat",1);
  fhBookTree->SetBranchStatus("Pathcat",1);
  fhBookTree->SetBranchStatus("P0cat",1);
  fhBookTree->SetBranchStatus("Nthcas",1);
  fhBookTree->SetBranchStatus("Iparcas",1);
  fhBookTree->SetBranchStatus("Icas",1);
  fhBookTree->SetBranchStatus("Xincas",1);
  fhBookTree->SetBranchStatus("Yincas",1);
  fhBookTree->SetBranchStatus("Zincas",1);
  fhBookTree->SetBranchStatus("Xoutcas",1);
  fhBookTree->SetBranchStatus("Youtcas",1);
  fhBookTree->SetBranchStatus("Zoutcas",1);
  fhBookTree->SetBranchStatus("Erelcas",1);
  fhBookTree->SetBranchStatus("Timecas",1);
  fhBookTree->SetBranchStatus("Pathcas",1);
  fhBookTree->SetBranchStatus("P0cas",1);
  fhBookTree->SetBranchStatus("Nthcard",1);
  fhBookTree->SetBranchStatus("Iparcard",1);
  fhBookTree->SetBranchStatus("Icard",1);
  fhBookTree->SetBranchStatus("Xincard",1);
  fhBookTree->SetBranchStatus("Yincard",1);
  fhBookTree->SetBranchStatus("Zincard",1);
  fhBookTree->SetBranchStatus("Xoutcard",1);
  fhBookTree->SetBranchStatus("Youtcard",1);
  fhBookTree->SetBranchStatus("Zoutcard",1);
  fhBookTree->SetBranchStatus("Erelcard",1);
  fhBookTree->SetBranchStatus("Timecard",1);
  fhBookTree->SetBranchStatus("Pathcard",1);
  fhBookTree->SetBranchStatus("P0card",1);

  // In this simpliefied approach we will assume that once
  // a particle releases > 0.5 mip in one of the 12 AC detectors it 
  // will fire. We will furthermore assume that both cards read out
  // identical data.

  // If you develop your digitization algorithm, you should start by
  // identifying the information present in level2 (post-darth-vader)
  // data. 

  Float_t SumEcat[5];
  Float_t SumEcas[5];
  Float_t SumEcard[5];
  for (Int_t k= 0;k<5;k++){
    SumEcat[k]=0.;
    SumEcas[k]=0.;
    SumEcard[k]=0.;
  };

  if (Nthcat>50 || Nthcas>50 || Nthcard>50)
    printf("*** ERROR AC! NthAC out of range!\n\n");

  // energy dependence on position (see file AcFitOutputDistancePmt.C by S.Orsi)
  // based on J.Lundquist's calculations (PhD thesis, page 94)
  // function: [0]+[1]*atan([2]/(x+1)), where the 3 parameters are:
  //   8.25470e-01   +- 1.79489e-02
  //   6.41609e-01   +- 2.65846e-02
  //   9.81177e+00   +- 1.21284e+00
  // hp: 1 minimum ionising particle at 35cm from the PMT releases 1mip
  //
  // NB: the PMT positions are needed!

  // look in CAT
  //  for (UInt_t k= 0;k<50;k++){
  for (Int_t k= 0;k<Nthcat;k++){
    if (Erelcat[k] > 0)
      SumEcat[Icat[k]] += Erelcat[k]; 
  };

  // look in CAS
  for (Int_t k= 0;k<Nthcas;k++){
    if (Erelcas[k] >0) 
      SumEcas[Icas[k]] += Erelcas[k];
  };

  // look in CARD
  for (Int_t k= 0;k<Nthcard;k++){
    if (Erelcard[k] >0) 
      SumEcard[Icard[k]] += Erelcard[k];
  };
 
  // channel mapping              Hit Map
  // 1 CARD4                      0          LSB
  // 2 CAT2                       0
  // 3 CAS1                       0
  // 4 NC                         0
  // 5 CARD2                      0
  // 6 CAT4                       1 
  // 7 CAS4                       0  
  // 8 NC                         0
  // 9 CARD3                      0
  // 10 CAT3                      0
  // 11 CAS3                      0 
  // 12 NC                        0
  // 13 CARD1                     0
  // 14 CAT1                      0
  // 15 CAS2                      0
  // 16 NC                        0          MSB

  // In the first version only the hit-map is filled, not the SR.

  // Threshold: 0.8 MeV.

  Float_t thr = 8e-4;

  fDataAC[3] = 0x0000;

  if (SumEcas[0] > thr)  fDataAC[3]  = 0x0004;
  if (SumEcas[1] > thr)  fDataAC[3] += 0x4000;
  if (SumEcas[2] > thr)  fDataAC[3] += 0x0400;
  if (SumEcas[3] > thr)  fDataAC[3] += 0x0040;   

  if (SumEcat[0] > thr)  fDataAC[3] += 0x2000;
  if (SumEcat[1] > thr)  fDataAC[3] += 0x0002;
  if (SumEcat[2] > thr)  fDataAC[3] += 0x0200;
  if (SumEcat[3] > thr)  fDataAC[3] += 0x0020; 
  
  if (SumEcard[0] > thr)  fDataAC[3] += 0x1000;
  if (SumEcard[1] > thr)  fDataAC[3] += 0x0010;
  if (SumEcard[2] > thr)  fDataAC[3] += 0x0100;
  if (SumEcard[3] > thr)  fDataAC[3] += 0x0001; 

  fDataAC[67] = fDataAC[3];

  // shift registers
  // the central bin is equal to the hitmap, all other bins in the shift register are 0
  for (UInt_t i=0; i<=15; i++){
    fDataAC[i+11] = 0x0000;   
    fDataAC[i+75] = 0x0000;
  }
  fDataAC[18] = fDataAC[3];
  fDataAC[82] = fDataAC[3];

  //    for (Int_t i=0; i<fACbuffer; i++){
  //    printf("%0x  ",fDataAC[i]);   
  //    if ((i+1)%8 ==0) cout << endl;
  //   }
};


void Digitizer::DigitizeS4(){
  Int_t DEBUG=0;
  // creato:  S. Borisov, INFN Roma2 e MEPHI, Sett 2007
  TString ciao,modo="ns";
  Int_t i,j,t,NdF,pmt,NdFT,S4,S4v=0,S4p=32;
  Float_t E0,E1=1e-6,Ert,X,Y,Z,x,y,z,V[3],Xs[2],Ys[2],Zs[2],Yp[6],q,w,p=0.1,l,l0=500;
  Xs[0]=-24.1;
  Xs[1]=24.1;
  Ys[0]=-24.1;
  Ys[1]=24.1;
  Zs[0]=-0.5;
  Zs[1]=0.5;
  Yp[0]=-20.;
  Yp[2]=-1.;
  Yp[4]=17.;
  for(i=0;i<3;i++)
    Yp[2*i+1]=Yp[2*i]+3;
  srand(time(NULL));
  // --- activate branches:
  fhBookTree->SetBranchStatus("Nthtof",1);
  fhBookTree->SetBranchStatus("Ipltof",1);
  fhBookTree->SetBranchStatus("Ipaddle",1);
  
  fhBookTree->SetBranchStatus("Xintof",1);
  fhBookTree->SetBranchStatus("Yintof",1);
  fhBookTree->SetBranchStatus("Xouttof",1);
  fhBookTree->SetBranchStatus("Youttof",1);
  
  fhBookTree->SetBranchStatus("Ereltof",1);
  fhBookTree->SetBranchStatus("Timetof",1);
  NdFT=0;
  Ert=0;
  for(i=0;i<Nthtof;i++){
    if(Ipltof[i]!=6) continue;
    Ert+=Ereltof[i];
           
    if(modo=="ns") continue;
    NdF=Int_t(Ereltof[i]/E1);
    NdFT=0;
    X=Xintof[i];
    Y=Yintof[i];
    Z=(Float_t)(random())/(Float_t)(0x7fffffff)-0.5;
    //cout<<"XYZ "<<X<<"  "<<Y<<"  "<<Z<<endl;
    for(j=0;j<NdF;j++){
      q=(Float_t)random()/(Float_t)0x7fffffff;
      w=(Float_t)random()/(Float_t)0x7fffffff;
      // cout<<"qw "<<q<<" "<<w<<endl;
      V[0]=p*cos(6.28318*q);
      V[1]=p*sin(6.28318*q);
      V[2]=p*(2.*w-1.);
      pmt=0;
      x=X;
      y=Y;
      z=Z;
      while(pmt==0 && (x>Xs[0] && x<Xs[1])&&(y>Ys[0] && y<Ys[1])&&(z>Zs[0] && z<Zs[1])){
	l=0;
	while(pmt==0 && (x>Xs[0] && x<Xs[1])&&(y>Ys[0] && y<Ys[1])&&(z>Zs[0] && z<Zs[1])){
	  x+=V[0];
	  y+=V[1];
	  z+=V[2];
	  l+=p;
	  //cout<<x<<"  "<<y<<"  "<<z<<"  "<<l<<endl;
	  //cin>>ciao;
	}
	if((x<Xs[0]+p || x>Xs[1]-p)&&(y>Ys[0]+p && y<Ys[1]-p)&&(z>Zs[0]+p && z<Zs[1]-p)){
	  for(t=0;t<3;t++){
	    if(y>=Yp[2*t] && y<Yp[2*t+1]){
	      if(pmt==0)NdFT++;
	      pmt=1;
	      //cout<<NdFT<<endl;
	      break;
	    }
	  }
	  if(pmt==1)break;
	  V[0]=-V[0];
	}
	q=(Float_t)random()/(Float_t)0x7fffffff;
	w=1-exp(-l/l0);
	if(q<w)break;
	q=(Float_t)random()/(Float_t)0x7fffffff;
	w=0.5;
	if(q<w)break;
	if((x>Xs[0]+p && x<Xs[1]-p)&&(y<Ys[0]+p || y>Ys[1]-p)&&(z>Zs[0]+p && z<Zs[1]-p))V[1]=-V[1];
	if((x>Xs[0]+p && x<Xs[1]-p)&&(y>Ys[0]+p && y<Ys[1]-p)&&(z<Zs[0]+p || z>Zs[1]-p))V[2]=-V[2];
	x+=V[0];
	y+=V[1];
	z+=V[2];
	l=0;
	//cout<<x<<"  "<<y<<"  "<<z<<"  "<<l<<endl;
		//cin>>ciao;
      }
    }
  }
  Ert=Ert/0.002;
  q=(Float_t)(random())/(Float_t)0x7fffffff;
  w=0.7;
  //E0=(Float_t)(4064./7.);
  E0=4064./7.;
  if(Ert<1) S4=0;
  else S4=(Int_t)(4064.*(1.-exp(-(Ert-1.)/E0)));
  i=S4/4;
  if(S4%4==0) 
    S4v=S4+S4p;
  else if(S4%4==1){
    if(q<w) S4v=S4-1+S4p;
    else S4v=S4+1+S4p;
  } else if(S4%4==2) S4v=S4+S4p;
  else if(S4%4==3){
    if(q<w) S4v=S4+1+S4p;
    else S4v=S4-1+S4p;
  }
  if (DEBUG)
    cout<<"Ert_S4 = " << Ert << " --- S4v = " << S4v << endl;
  fDataS4[0]=S4v;//0xf028;
  fDataS4[1]=0xd800;
  fDataS4[2]=0x0300;
  //cout<<"  PMT  "<<NdFT<<"  "<<NdF<<endl;
  //cin>>ciao;
}



void Digitizer::DigitizeND(){
  // creato:  S. Borisov, INFN Roma2 e MEPHI, Sett 2007
  Int_t i=0;
  UShort_t NdN=0;
  fhBookTree->SetBranchStatus("Nthnd",1);
  fhBookTree->SetBranchStatus("Itubend",1);
  fhBookTree->SetBranchStatus("Iparnd",1);  
  fhBookTree->SetBranchStatus("Xinnd",1);
  fhBookTree->SetBranchStatus("Yinnd",1);
  fhBookTree->SetBranchStatus("Zinnd",1);
  fhBookTree->SetBranchStatus("Xoutnd",1);
  fhBookTree->SetBranchStatus("Youtnd",1);
  fhBookTree->SetBranchStatus("Zoutnd",1);
  fhBookTree->SetBranchStatus("Erelnd",1);
  fhBookTree->SetBranchStatus("Timend",1);
  fhBookTree->SetBranchStatus("Pathnd",1);
  fhBookTree->SetBranchStatus("P0nd",1);
  //cout<<"n="<<Nthnd<<"  "<<NdN<<"\n";
  for(i=0;i<Nthnd;i++){
    if(Iparnd[i]==13){
      NdN++;
    }
  }
  //NdN=100; //only for debug

  for(i=0;i<3;i++){
    fDataND[2*i]=0x0000;
    fDataND[2*i+1]=0x010F;
  }
  fDataND[0]=0xFF00 & (256*NdN);
}


void Digitizer::DigitizeDummy() {

  fhBookTree->SetBranchStatus("Enestrip",1);

  // dumy header
  fDataDummy[0] = 0xCAAA;

  for (Int_t i=1; i<fDummybuffer; i++){
    fDataDummy[i] = 0xFFFF;
    //   printf("%0x  ",fDataDummy[i]);   
    //if ((i+1)%8 ==0) cout << endl;
  }
};


void Digitizer::WriteData(){

  // Routine that writes the data to a binary file
  // PSCU data are already swapped
  fOutputfile.write(reinterpret_cast<char*>(fDataPSCU),sizeof(UShort_t)*fPSCUbuffer);
  // TRG
  fOutputfile.write(reinterpret_cast<char*>(fDataTrigger),sizeof(UChar_t)*153);
  // TOF
  fOutputfile.write(reinterpret_cast<char*>(fDataTof),sizeof(UChar_t)*276);
  // AC
  UShort_t temp[1000000];
  memset(temp,0,sizeof(UShort_t)*1000000);
  swab(fDataAC,temp,sizeof(UShort_t)*fACbuffer);  // WE MUST SWAP THE BYTES!!!
  fOutputfile.write(reinterpret_cast<char*>(temp),sizeof(UShort_t)*fACbuffer);
  // CALO
  memset(temp,0,sizeof(UShort_t)*1000000);
  swab(fDataCALO,temp,sizeof(UShort_t)*fCALOlength); // WE MUST SWAP THE BYTES!!!
  fOutputfile.write(reinterpret_cast<char*>(temp),sizeof(UShort_t)*fCALOlength);
  // TRK
  memset(temp,0,sizeof(UShort_t)*1000000);
  swab(fDataTrack,temp,sizeof(UShort_t)*fTracklength);  // WE MUST SWAP THE BYTES!!!
  fOutputfile.write(reinterpret_cast<char*>(temp),sizeof(UShort_t)*fTracklength); 
  fTracklength=0; 
   // padding to 64 bytes
  //
  if ( fPadding ){
    fOutputfile.write(reinterpret_cast<char*>(fDataPadding),sizeof(UChar_t)*fPadding);
  };
  // S4
  memset(temp,0,sizeof(UShort_t)*1000000);
  swab(fDataS4,temp,sizeof(UShort_t)*fS4buffer);  // WE MUST SWAP THE BYTES!!!
  fOutputfile.write(reinterpret_cast<char*>(temp),sizeof(UShort_t)*fS4buffer);
  // ND
  memset(temp,0,sizeof(UShort_t)*1000000);
  swab(fDataND,temp,sizeof(UShort_t)*fNDbuffer);  // WE MUST SWAP THE BYTES!!!
  fOutputfile.write(reinterpret_cast<char*>(temp),sizeof(UShort_t)*fNDbuffer);
};


void Digitizer::ReadData(){

  UShort_t InData[64];

  // for debuggigng purposes only, write your own routine if you like (many
  // hardwired things.
  
  ifstream InputFile;

  // if (!InputFile) {

  //     std::cout << "ERROR" << endl;
  //     // An error occurred!
  //     // myFile.gcount() returns the number of bytes read.
  //     // calling myFile.clear() will reset the stream state
  //     // so it is usable again.
  //   };


  
  //InputFile.seekg(0);

  InputFile.open(fFilename, ios::in | ios::binary);
  //    fOutputfile.seekg(0);
  if (!InputFile.is_open()) std::cout << "ERROR" << endl;

  InputFile.seekg(0);
  
  for (Int_t k=0; k<=1000; k++){
    InputFile.read(reinterpret_cast<char*>(InData),384*sizeof(UShort_t));

    std::cout << "Read back: " << endl << endl;

    for (Int_t i=0; i<=384; i++){
      printf("%4x ", InData[i]);   
      if ((i+1)%8 ==0) cout << endl;
    }

  }
  cout << endl;
  InputFile.close();

};



void Digitizer::DigitizeTrack() {
//std:: cout << "Entering DigitizeTrack " << endl;
Float_t  AdcTrack[fNviews][fNstrips_view];  //  Vector of strips to be compressed

Int_t Iview;
Int_t Nstrip;

  for (Int_t j=0; j<fNviews;j++) {

    for (Int_t i=0; i<fNladder;i++) {

      Float_t commonN1=gRandom->Gaus(0.,fSigmaCommon);
      Float_t commonN2=gRandom->Gaus(0.,fSigmaCommon);
      for (Int_t k=0; k<fNstrips_ladder;k++) {
      Nstrip=i*fNstrips_ladder+k;
      AdcTrack[j][Nstrip]=gRandom->Gaus(fPedeTrack[j][Nstrip],fSigmaTrack[j][Nstrip]);
      if(k<4*128) {AdcTrack[j][Nstrip] += commonN1;}  // full correlation of 4 VA1 Com. Noise
      else {AdcTrack[j][Nstrip] += commonN2;}   // full correlation of 4 VA1 Com. Noise

      };
      
        
    };


  }; 


  fhBookTree->SetBranchStatus("Nstrpx",1);
  fhBookTree->SetBranchStatus("Npstripx",1);
  fhBookTree->SetBranchStatus("Ntstripx",1);
  fhBookTree->SetBranchStatus("Istripx",1);
  fhBookTree->SetBranchStatus("Qstripx",1);
  fhBookTree->SetBranchStatus("Xstripx",1);
  fhBookTree->SetBranchStatus("Nstrpy",1);
  fhBookTree->SetBranchStatus("Npstripy",1);
  fhBookTree->SetBranchStatus("Ntstripy",1);
  fhBookTree->SetBranchStatus("Istripy",1);
  fhBookTree->SetBranchStatus("Qstripy",1);
  fhBookTree->SetBranchStatus("Ystripy",1);



  Float_t ADCfull;
  Int_t iladd=0;
  for (Int_t ix=0; ix<Nstrpx;ix++) {
  Iview=Npstripx[ix]*2-1;
  Nstrip=(Int_t)Istripx[ix]-1;
  if(Nstrip<fNstrips_ladder) iladd=0;
  if((Nstrip>=fNstrips_ladder)&&(Nstrip<2*fNstrips_ladder)) iladd=1;
  if((Nstrip>=2*fNstrips_ladder)&&(Nstrip<3*fNstrips_ladder)) iladd=2;
  ADCfull=AdcTrack[Iview][Nstrip] += Qstripx[ix]*fMipCor[iladd][Iview];
  AdcTrack[Iview][Nstrip] *= SaturationTrack(ADCfull);

  };


  for (Int_t iy=0; iy<Nstrpy;iy++) {
  Iview=Npstripy[iy]*2-2;
  Nstrip=(Int_t)Istripy[iy]-1;
  if(Nstrip<fNstrips_ladder) iladd=0;
  if((Nstrip>=fNstrips_ladder)&&(Nstrip<2*fNstrips_ladder)) iladd=1;
  if((Nstrip>=2*fNstrips_ladder)&&(Nstrip<3*fNstrips_ladder)) iladd=2;
  ADCfull=AdcTrack[Iview][Nstrip] -= Qstripy[iy]*fMipCor[iladd][Iview];
  AdcTrack[Iview][Nstrip] *= SaturationTrack(ADCfull);

  };  
      
CompressTrackData(AdcTrack);  // Compress and Digitize data of one Ladder  in turn for all ladders

};



void Digitizer::DigitizeTrackCalib(Int_t ii) {

std:: cout << "Entering DigitizeTrackCalib " << ii << endl;
if( (ii!=1)&&(ii!=2) ) {
 std:: cout << "error wrong DigitizeTrackCalib argument" << endl;
 return;
}; 

memset(fDataTrack,0,sizeof(UShort_t)*fTRACKbuffer);
fTracklength=0;

UShort_t Dato;

Float_t dato1;
Float_t dato2;
Float_t dato3;
Float_t dato4;

UShort_t DatoDec;
UShort_t DatoDec1;
UShort_t DatoDec2;
UShort_t DatoDec3;
UShort_t DatoDec4;

UShort_t EVENT_CAL;
UShort_t PED_L1;
UShort_t ReLength;
UShort_t OveCheckCode;
//UShort_t PED_L2;
//UShort_t PED_L3HI;
//UShort_t PED_L3LO;
//UShort_t SIG_L1HI;
//UShort_t SIG_L1LO;
//UShort_t SIG_L2HI;
//UShort_t SIG_L2LO;
//UShort_t SIG_L3;
//UShort_t BAD_L1;
//UShort_t BAD_L2LO;
//UShort_t BAD_L3HI;
//UShort_t BAD_L3LO;
//UShort_t FLAG;


  Int_t DSPpos;
  for (Int_t j=ii-1; j<fNviews;j+=2) {
  UShort_t CkSum=0;
  // here skip the dsp header and his trailer , to be written later
  DSPpos=fTracklength;
  fTracklength=fTracklength+13+3;


    for (Int_t i=0; i<fNladder;i++) {
      for (Int_t k=0; k<fNstrips_ladder;k++) {
      // write in buffer the current LADDER
      Dato=(UShort_t)fPedeTrack[j][i*fNstrips_ladder+k];
      dato1=fPedeTrack[j][i*fNstrips_ladder+k]-Dato; 

      DatoDec1=(UShort_t)(dato1*2);
      dato2=dato1*2-DatoDec1;

      DatoDec2=(UShort_t)(dato2*2);
      dato3=dato2*2-DatoDec2;
      
      DatoDec3=(UShort_t)(dato3*2);
      dato4=dato3*2-DatoDec3;
      
      DatoDec4=(UShort_t)(dato4*2);
      
      DatoDec=DatoDec1*0x0008+DatoDec2*0x0004+DatoDec3*0x0002+DatoDec4*0x0001;
      fDataTrack[fTracklength]=( (Dato << 4) | (DatoDec & 0x000F) );
      CkSum=CkSum^fDataTrack[fTracklength];
      fTracklength++;
      };

      for (Int_t k=0; k<fNstrips_ladder;k++) {
      // write in buffer the current LADDER
      Dato=(UShort_t)fSigmaTrack[j][i*fNstrips_ladder+k]; 
      dato1=fSigmaTrack[j][i*fNstrips_ladder+k]-Dato; 

      DatoDec1=(UShort_t)(dato1*2);
      dato2=dato1*2-DatoDec1;

      DatoDec2=(UShort_t)(dato2*2);
      dato3=dato2*2-DatoDec2;
      
      DatoDec3=(UShort_t)(dato3*2);
      dato4=dato3*2-DatoDec3;
      
      DatoDec4=(UShort_t)(dato4*2);
      
      DatoDec=DatoDec1*0x0008+DatoDec2*0x0004+DatoDec3*0x0002+DatoDec4*0x0001;
      
      fDataTrack[fTracklength]=( (Dato << 4) | (DatoDec & 0x000F) );
      CkSum=CkSum^fDataTrack[fTracklength];
      fTracklength++;
      };
      
      for (Int_t k=0; k<64;k++) {
      fDataTrack[fTracklength]=0x0000;
      CkSum=CkSum^fDataTrack[fTracklength];
      fTracklength++;

      };
      // end ladder

    // write in buffer the end ladder word
    if(i==0) fDataTrack[fTracklength]=0x1807;
    if(i==1) fDataTrack[fTracklength]=0x1808;
    if(i==2) fDataTrack[fTracklength]=0x1809;
    CkSum=CkSum^fDataTrack[fTracklength];
    fTracklength++;

    // write in buffer the TRAILER
    ReLength=(UShort_t)((fNstrips_ladder*2+64+1)*2+3);
    OveCheckCode=0x0000;

    fDataTrack[fTracklength]=0x0000;
    fTracklength++;
  
    fDataTrack[fTracklength]=(ReLength >> 8);
    fTracklength++;
  
    fDataTrack[fTracklength]=( (ReLength << 8) | (OveCheckCode & 0x00FF) );
    fTracklength++;

    // end TRAILER        
    };

  // write in buffer the DSP header

  fDataTrack[DSPpos]=(0xE800 | ( ((j+1) << 3) | 0x0005) );
  
  fDataTrack[DSPpos+1]=0x01A9;

  fDataTrack[DSPpos+2]=0x8740;
   
  EVENT_CAL=0;
  fDataTrack[DSPpos+3]=(0x1A00 | ( (0x03FF & EVENT_CAL)>> 1) );
   
  PED_L1=0;
  fDataTrack[DSPpos+4]=( ((EVENT_CAL << 15) | 0x5002 ) | ((0x03FF & PED_L1) << 2) );
  
  // FROM HERE WE WRITE AS ALL VARIABLE apart CkSum are =0   

  fDataTrack[DSPpos+5]=0x8014;
  
  fDataTrack[DSPpos+6]=0x00A0;
  
  fDataTrack[DSPpos+7]=0x0500;
  
  fDataTrack[DSPpos+8]=0x2801;
  
  fDataTrack[DSPpos+9]=0x400A;
   
  fDataTrack[DSPpos+10]=0x0050;
  
  CkSum=(CkSum >> 8)^(CkSum&0x00FF);
  fDataTrack[DSPpos+11]=(0x0280 | (CkSum >> 3));
  
  fDataTrack[DSPpos+12]=(0x1FFF | (CkSum << 13) );

  // end dsp header

  // write in buffer the TRAILER
  
  ReLength=(UShort_t)((13*2)+3);
  OveCheckCode=0x0000;
  fDataTrack[DSPpos+13]=0x0000;

  fDataTrack[DSPpos+14]=(ReLength >> 8);
   
  fDataTrack[DSPpos+15]=( (ReLength << 8) | (OveCheckCode & 0x00FF) );
  
  // end TRAILER



   
  // end DSP    
  };    



};

void Digitizer::WriteTrackCalib() {


std:: cout << " Entering WriteTrackCalib " << endl;

fOutputfile.write(reinterpret_cast<char*>(fDataPSCU),sizeof(UShort_t)*fPSCUbuffer);

UShort_t temp[1000000];
memset(temp,0,sizeof(UShort_t)*1000000);
swab(fDataTrack,temp,sizeof(UShort_t)*fTracklength);  // WE MUST SWAP THE BYTES!!!
fOutputfile.write(reinterpret_cast<char*>(temp),sizeof(UShort_t)*fTracklength); 
fTracklength=0; 
if ( fPadding ){
      fOutputfile.write(reinterpret_cast<char*>(fDataPadding),sizeof(UChar_t)*fPadding);
};

};


void Digitizer::ClearTrackCalib() {

std:: cout << "Entering ClearTrackCalib " << endl;
     
  
};


void Digitizer::LoadTrackCalib() {
std:: cout << "Entering LoadTrackCalib " << endl;

// Generate the pedestals and sigmas according to parametrization
  for (Int_t j=0; j<fNviews;j++) {
    for (Int_t i=0; i<fNstrips_view;i++) {
    
    if((j+1)%2==0) {
    fPedeTrack[j][i]=gRandom->Gaus(fAvePedex,fSigmaPedex);
    fSigmaTrack[j][i]=gRandom->Gaus(fAveSigmax,fSigmaSigmax);
    };
    if((j+1)%2==1) {
    fPedeTrack[j][i]=gRandom->Gaus(fAvePedey,fSigmaPedey);
    fSigmaTrack[j][i]=gRandom->Gaus(fAveSigmay,fSigmaSigmay);
    };
    
    };
  };    

   
  
};

void Digitizer::LoadMipCor() {
std:: cout << "Entering LoadMipCor" << endl;
  Float_t xfactor=1./151.6*1.04;
  Float_t yfactor=1./152.1;

  fMipCor[0][0]=140.02*yfactor;
  fMipCor[0][1]=140.99*xfactor;
  fMipCor[0][2]=134.48*yfactor;
  fMipCor[0][3]=144.41*xfactor;
  fMipCor[0][4]=140.74*yfactor;
  fMipCor[0][5]=142.28*xfactor;
  fMipCor[0][6]=134.53*yfactor;
  fMipCor[0][7]=140.63*xfactor;
  fMipCor[0][8]=135.55*yfactor;
  fMipCor[0][9]=138.00*xfactor;
  fMipCor[0][10]=154.95*yfactor;
  fMipCor[0][11]=158.44*xfactor;
  
  
  fMipCor[1][0]=136.07*yfactor;
  fMipCor[1][1]=135.59*xfactor;
  fMipCor[1][2]=142.69*yfactor;
  fMipCor[1][3]=138.19*xfactor;
  fMipCor[1][4]=137.35*yfactor;
  fMipCor[1][5]=140.23*xfactor;
  fMipCor[1][6]=153.15*yfactor;
  fMipCor[1][7]=151.42*xfactor;
  fMipCor[1][8]=129.76*yfactor;
  fMipCor[1][9]=140.63*xfactor;
  fMipCor[1][10]=157.87*yfactor;
  fMipCor[1][11]=153.64*xfactor;

  fMipCor[2][0]=134.98*yfactor;
  fMipCor[2][1]=143.95*xfactor;
  fMipCor[2][2]=140.23*yfactor;
  fMipCor[2][3]=138.88*xfactor;
  fMipCor[2][4]=137.95*yfactor;
  fMipCor[2][5]=134.87*xfactor;
  fMipCor[2][6]=157.56*yfactor;
  fMipCor[2][7]=157.31*xfactor;
  fMipCor[2][8]=141.37*yfactor;
  fMipCor[2][9]=143.39*xfactor;
  fMipCor[2][10]=156.15*yfactor;
  fMipCor[2][11]=158.79*xfactor;

/*
  for (Int_t j=0; j<fNviews;j++) {
    for (Int_t i=0; i<fNstrips_view;i++) {
    fMipCor[j][i]=1.;
    };
  };    

     
*/  
};

void Digitizer::CompressTrackData(Float_t AdcTrack[fNviews][fNstrips_view]) {
// copy of the corresponding compression fortran routine + new digitization
// std:: cout << "Entering CompressTrackData " << endl;
Int_t oldval=0;
Int_t newval=0;
Int_t trasmesso=0;
Int_t ntrastot=0;
Float_t real;
Float_t inte;
Int_t cercacluster=0;
Int_t kt=0;
static const int DSPbufferSize = 4000; // 13 bit buffer to be rearranged in 16 bit Track buffer
UShort_t DataDSP[DSPbufferSize];  // 13 bit  buffer to be rearranged in 16 bit Track buffer
UShort_t DSPlength;  // 13 bit buffer to be rearranged in 16 bit Track buffer

memset(fDataTrack,0,sizeof(UShort_t)*fTRACKbuffer); // probably not necessary becouse already done ?
fTracklength=0;

  for (Int_t iv=0; iv<fNviews;iv++) {
  memset(DataDSP,0,sizeof(UShort_t)*DSPbufferSize);
  DSPlength=16; // skip the header, to be written later
  UShort_t CheckSum=0;
// write dsp header on buffer

//    fDataTrack[fTracklength]=0xE805;
//    fTracklength++;

//    fDataTrack[fTracklength]=0x01A9;
//    fTracklength++;

// end dsp header

   //
   // INIZIO VISTA IV - TAKE PROPER ACTION
   //



    for (Int_t ladder=0; ladder<fNladder;ladder++) {
      Int_t k=0;
      while (k<fNstrips_ladder) {
        // compress write in buffer the current LADDER
        if ( k == 0)  {
	  real=modff(AdcTrack[iv][ladder*fNstrips_ladder+k],&inte);
          if (real > 0.5) inte=inte+1;
          newval=(Int_t)inte -(Int_t)fPedeTrack[iv][ladder*fNstrips_ladder+k];
          // first strip of ladder is transmitted
          // DC_TOT first " << AdcTrack[iv][ladder*fNstrips_ladder+k] << endl;
	  DataDSP[DSPlength]=( ((UShort_t)inte) & 0x0FFF);
	  DSPlength++;  
          ntrastot++;
          trasmesso=1;
          oldval=newval;
	  kt=k;
	  k++;
	  continue; 
        };
	real=modff(AdcTrack[iv][ladder*fNstrips_ladder+k],&inte);
        if (real > 0.5) inte=inte+1;
        newval=(Int_t)inte -(Int_t)(fPedeTrack[iv][ladder*fNstrips_ladder+k]);
        cercacluster=1; // ????????? 
        if (cercacluster==1) {
	
 // controlla l'ordine di tutti queste strip ladder e DSP !!!!!!!	
          Int_t diff=0;

	  
	  switch ((iv+1)%2) {
	  case 0: diff=newval-oldval;
	  break;
	  case 1: diff=oldval-newval;	  
          break;
	  };

	  if (diff>fCutclu*(Int_t)fSigmaTrack[iv][ladder*fNstrips_ladder+k]) {
            Int_t clval=newval;
            Int_t klp=k;	// go on to search for maximum 
            klp++;

            while(klp<fNstrips_ladder) {
	      real=modff(AdcTrack[iv][ladder*fNstrips_ladder+klp],&inte);
              if (real > 0.5) inte=inte+1;
              Int_t clvalp=(Int_t)inte -(Int_t)fPedeTrack[iv][ladder*fNstrips_ladder+klp];
	      if((iv+1)%2==0) {

 	        if(clvalp>clval) {
	           clval=clvalp;
	  	   k=klp;}
		else break; // max of cluster found

	      }	else {  

	        if(clvalp<clval) {
	           clval=clvalp;
		   k=klp;}
		else break; // max of cluster found

	      };
	      
	      klp++;
	    };

            Int_t kl1=k-fNclst; // max of cluster (or end of ladder ?)
	    trasmesso=0;
	    if(kl1<0)  kl1=0;

	    if(kt>=kl1) kl1=kt+1;
            if( (kt+1)==kl1 ) trasmesso=1;


	    
	    Int_t kl2=k+fNclst;
	    if(kl2>=fNstrips_ladder) kl2=fNstrips_ladder-1;

	    for(Int_t klt=kl1 ; klt<=kl2 ; klt++) {
              if(trasmesso==0) { 
	      //  std:: cout << "STRIP " << klt << endl;
              //  std:: cout << "ADC_TOT " <<AdcTrack[iv][ladder*fNstrips_ladder+klt] << endl;

	        DataDSP[DSPlength]=( ((UShort_t)klt) | 0x1000);
	        DSPlength++;  
                ntrastot++;
	     

	        real=modff(AdcTrack[iv][ladder*fNstrips_ladder+klt],&inte);
                if (real > 0.5) inte=inte+1;
	        DataDSP[DSPlength]=( ((UShort_t)inte) & 0x0FFF);
	        DSPlength++; 
	        ntrastot++;
	     
               }
	       else { 
               //   std:: cout << "ADC_TOT " <<AdcTrack[iv][ladder*fNstrips_ladder+klt] << endl;
 	        real=modff(AdcTrack[iv][ladder*fNstrips_ladder+klt],&inte);
                if (real > 0.5) inte=inte+1;
	        DataDSP[DSPlength]=( ((UShort_t)inte) & 0x0FFF);
	        DSPlength++;               
		ntrastot++;
                };
                trasmesso=1;	      	   	    
	    };  // end trasmission
	    kt=kl2;
	    k=kl2;
	    real=modff(AdcTrack[iv][ladder*fNstrips_ladder+kt],&inte);
            if (real > 0.5) inte=inte+1;
 	    oldval=(Int_t)inte -(Int_t)fPedeTrack[iv][ladder*fNstrips_ladder+kt];
            k++;
	    continue;


	  }; // end cercacluster
	}; // end cercacluster
      
// start ZOP check for strips no
      
      if(abs(newval-oldval)>=fCutzop*(Int_t)fSigmaTrack[iv][ladder*fNstrips_ladder+k]) { 

       if(trasmesso==0) {
       // std:: cout << "STRIP " << k << endl;
       // std:: cout << "ADC_TOT " << AdcTrack[iv][ladder*fNstrips_ladder+k] << endl;

	 DataDSP[DSPlength]=( ((UShort_t)k) | 0x1000);
	 DSPlength++;  
         ntrastot++;
	     

	 real=modff(AdcTrack[iv][ladder*fNstrips_ladder+k],&inte);
         if (real > 0.5) inte=inte+1;
	 DataDSP[DSPlength]=( ((UShort_t)inte) & 0x0FFF);
	 DSPlength++; 
	 ntrastot++;

       }
       else {
       //  std:: cout << "ADC_TOT " << AdcTrack[iv][ladder*fNstrips_ladder+k] << endl;
	 real=modff(AdcTrack[iv][ladder*fNstrips_ladder+k],&inte);
         if (real > 0.5) inte=inte+1;
	 DataDSP[DSPlength]=(  ((UShort_t)inte) & 0x0FFF);
	 DSPlength++; 
	 ntrastot++;      
       };
       trasmesso=1;
       oldval=newval;
       kt=k;

      }  
      else trasmesso=0;
      // end zop 
      
      k++;      
      };  // end cycle inside ladder
// write here the end ladder bytes
//            std:: cout << "FINE LADDER " << ladder+1 << endl; 

      DataDSP[DSPlength]=( ((UShort_t)(ladder+1))  | 0x1800);
      DSPlength++; 
      ntrastot++; 
      trasmesso=0;

    };  //end cycle inside dsp
//  std:: cout << "FINE DSP " << iv+1 << endl;
// here put DSP header
    DataDSP[0]=(0x1CA0 | ((UShort_t)(iv+1)) );
    UShort_t Nword=(DSPlength*13)/16; 
    if( ((DSPlength*13)%16)!=0) Nword++;
    DataDSP[1]=(0x1400 | ( Nword >> 10));
    DataDSP[2]=(0x1400 | ( Nword & 0x03FF) );
    DataDSP[3]=(0x1400 | (( (UShort_t)(fCounter >> 10) ) & 0x03FF) ); 
    DataDSP[4]=(0x1400 | (( (UShort_t)(fCounter) )  & 0x03FF) );
    DataDSP[5]=(0x1400 | ( (UShort_t)(fNclst << 7) ) | ( (UShort_t)(fCutzop << 4) )
     | ( (UShort_t)fCutzop  ) ); 
    DataDSP[6]=0x1400;
    DataDSP[7]=0x1400;
    DataDSP[8]=0x1400;
    DataDSP[9]=0x1400;
    DataDSP[10]=0x1400;
    DataDSP[11]=0x1400;
    DataDSP[12]=0x1400;
    DataDSP[13]=0x1400;
    DataDSP[14]=(0x1400 | (CheckSum & 0x00FF) ); 
    DataDSP[15]=0x1C00;
// end DSP header    


// write 13 bit DataDSP bufer inside 16 bit fDataTrack buffer
    Int_t Bit16free=16;
    UShort_t Dato;
    for (Int_t NDSP=0; NDSP<DSPlength;NDSP++) {
      Int_t Bit13ToWrite=13;
      while(Bit13ToWrite>0) { 
        if(Bit13ToWrite<=Bit16free) {
          Dato=((DataDSP[NDSP]&(0xFFFF >> (16-Bit13ToWrite)))<<(Bit16free-Bit13ToWrite));
	  fDataTrack[fTracklength]=fDataTrack[fTracklength] | Dato ;
	  Bit16free=Bit16free-Bit13ToWrite;
	  Bit13ToWrite=0;
	  if(Bit16free==0) {
	    if(NDSP>15) CheckSum=CheckSum^fDataTrack[fTracklength];
	    fTracklength++;
	    Bit16free=16;
	  };          
        }
	else if(Bit13ToWrite>Bit16free) {
	  Dato=( (DataDSP[NDSP]&(0xFFFF >> (16-Bit13ToWrite) ) ) >> (Bit13ToWrite-Bit16free) );
	  fDataTrack[fTracklength]=fDataTrack[fTracklength] | Dato ;
	  if(NDSP>15) CheckSum=CheckSum^fDataTrack[fTracklength];
	  fTracklength++;
	  Bit13ToWrite=Bit13ToWrite-Bit16free;
	  Bit16free=16;	 
	};
	
      }; // end cycle while(Bit13ToWrite>0)
          
    }; // end cycle DataDSP
    if(Bit16free!=16) { fTracklength++; CheckSum=CheckSum^fDataTrack[fTracklength]; }; 
    CheckSum=(CheckSum >> 8)^(CheckSum&0x00FF);
    fDataTrack[fTracklength-Nword+11]=(0x0280 | (CheckSum >> 3));
    fDataTrack[fTracklength-Nword+12]=(0x1C00 | (CheckSum << 13) );

// end write 13 bit DataDSP bufer inside 16 bit fDataTrack buffer

//write trailer on buffer
    UShort_t ReLength=(UShort_t)((Nword+13)*2+3);
    UShort_t OveCheckCode=0x0000;

    fDataTrack[fTracklength]=0x0000;
    fTracklength++;
  
    fDataTrack[fTracklength]=(ReLength >> 8);
    fTracklength++;
  
    fDataTrack[fTracklength]=( (ReLength << 8) | (OveCheckCode & 0x00FF) );
    fTracklength++;  
// end trailer 
//    std:: cout  << "DSPlength  " <<DSPlength << endl;
//    std:: cout << "Nword " << Nword  << endl;
//    std:: cout <<  "ReLength " << ReLength << endl;
  };    
//    std:: cout << "ntrastot " << ntrastot << endl;    

};


Float_t Digitizer::SaturationTrack(Float_t ADC) {
  Float_t SatFact=1.;
  if(ADC<70.) { SatFact=80./ADC; }; 
  if(ADC>3000.) { SatFact=3000./ADC; }; 
  return SatFact;
};