--- PamelaLevel2/src/PamLevel2.cpp	2007/01/18 08:51:16	1.18
+++ PamelaLevel2/src/PamLevel2.cpp	2007/03/28 15:29:14	1.37
@@ -85,9 +85,32 @@
 //
 //--------------------------------------
 /**
- * Constructor 
+ * Default Constructor 
  */
 PamLevel2::PamLevel2(){
+  Initialize();
+};
+
+/**
+ * Constructor with given dir, list and detectors
+ */
+PamLevel2::PamLevel2(TString ddir,TString list,TString detlist){
+  Initialize();
+  GetPamTree(GetListOfLevel2Files(ddir,list),detlist);
+  GetRunTree(GetListOfLevel2Files(ddir,list));
+};
+
+/**
+ * Constructor with given dir and list 
+ */
+PamLevel2::PamLevel2(TString ddir,TString list){
+  Initialize();
+  GetPamTree(GetListOfLevel2Files(ddir,list),"");
+  GetRunTree(GetListOfLevel2Files(ddir,list));
+};
+
+
+void PamLevel2::Initialize(){
 	
 //     trk2_obj  = TrkLevel2::GetTrkLevel2();
 //     trk1_obj  = TrkLevel1::GetTrkLevel1();
@@ -100,6 +123,11 @@
 //     nd_obj    = NDLevel2::GetNDLevel2();
 //     ac_obj    = AcLevel2::GetAcLevel2();
 //     orb_obj   = OrbitalInfo::GetOrbitalInfo();
+    
+    h0_obj    = 0;
+    trk0_obj  = 0;
+    calo0_obj  = 0;
+
     trk2_obj  = 0;
     trk1_obj  = 0;
     trkh_obj  = 0;
@@ -114,30 +142,68 @@
 
     run_obj   = 0;//new GL_RUN();
     soft_obj   = 0;// Emiliano
-    irun = -1;
-    runfirstentry = 0ULL;
-    runlastentry = 0ULL;
+    irun = -1LL;
+    runfirstentry = 0LL;
+    runlastentry = 0LL;
+
+    l0_file = NULL;
+    l0_tree = NULL;
+    iroot   = -1;
+    dbc     = 0;
+
+    prevshift = 0;
+    
+    run_tree = NULL;
+    run_tree_clone = NULL;
+    sel_tree = NULL;
+    sel_tree_clone = NULL;
+    
+    irunentry = -1LL;
+    pam_tree = NULL;
+    for(Int_t i=0; i<NCLONES; i++ )pam_tree_clone[i]=NULL;
+
+    host = "mysql://localhost/pamelaprod";
+    user = "anonymous";
+    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;
 
-    for(Int_t i=0; i<8; i++ )tree_clone[i]=NULL;
+    
 
 //    sorted_tracks = 0;//new TRefArray();
     
+    CAL0 = false;
     CAL1 = true;
     CAL2 = true;
     TRK2 = true;
     TRK1 = false;
     TRKh = false;
-    TRG = true;
-    TOF = true;
-    S4  = true;
-    ND  = true;
-    AC  = true;
-    ORB = true;
+    TRKh = false;
+    TRG  = true;
+    TOF  = true;
+    TOF0 = false;
+    S4   = true;
+    ND   = true;
+    AC   = true;
+    ORB  = true;
     
-    RUN = true;
+    RUN  = true;
+
+    SELLI = -1;
 
     tsorted=0;
     timage=0;
+    
+    howtosort = "+CAL+TOF";
+    //howtosort = "+TOF";
+    sortthr = 100.;
 
 };
 /**
@@ -149,6 +215,9 @@
     if(soft_obj)delete soft_obj; //Emiliano
 
 //    cout << "void PamLevel2::Clear()"<<endl;
+    if(h0_obj)   delete h0_obj;	
+    if(trk0_obj) delete trk0_obj;	
+    if(calo0_obj) delete calo0_obj;	
     if(trk1_obj) delete trk1_obj;	
     if(trk2_obj) delete trk2_obj;
     if(trkh_obj) delete trkh_obj;
@@ -169,6 +238,53 @@
 	timage->Delete();
 	delete timage;
     }
+
+    if(dbc){ 
+	dbc->Close();
+	delete dbc;
+    }
+    
+    if(l0_file)l0_file->Close();
+    //    if(pam_tree)pam_tree->Delete();;
+
+  if ( pam_tree ){
+    //
+    // we have first to find which chains we have to delete, then delete the main chain and only after delete the friend chains. Any other order causes a segfault...
+    //
+    TList *temp = pam_tree->GetListOfFriends();
+    TList *contents  = new TList; // create chain friend list
+    contents->SetOwner();
+    TIter next(temp);
+    TChain *questo = 0;
+    while ( (questo = (TChain*) next()) ){
+      TString name =  questo->GetName();
+      contents->Add((TChain*)gROOT->FindObject(name.Data()));// add object to the list
+    };
+    //
+    // deleting the main chain
+    //
+    pam_tree->Delete();
+    //
+    // deleting the friends...
+    //
+    TIter next2(contents);
+    TChain *questa = 0;
+    while ( questa = (TChain*)next2() ){
+      TString name =  questa->GetName();
+      questa->Delete();      
+      questa=NULL;
+    };
+    //
+  };
+  pam_tree = NULL;
+
+    if(run_tree)run_tree->Delete();;
+    if(sel_tree)sel_tree->Delete();;
+    for(Int_t i=0; i<NCLONES; i++ )if(pam_tree_clone[i])pam_tree_clone[i]->Delete();;
+    if(run_tree_clone)run_tree_clone->Delete();;
+    if(sel_tree_clone)sel_tree_clone->Delete();;
+    
+
 };
 
 /**
@@ -186,8 +302,11 @@
 //    if(run_obj) run_obj->Clear();  // Emiliano: Do not deallocate run_obj here, it will give segmentation fault! call clear instead 
 //    if(soft_obj) soft_obj->Clear();
 
+    if(h0_obj)   h0_obj->Clear();	
+//    if(trk0_obj) trk0_obj->Clear();	
+    if(calo0_obj) calo0_obj->Clear();	
     if(trk1_obj) trk1_obj->Clear();	
-    if(trk2_obj) trk2_obj->Clear();
+    if(trk2_obj) trk2_obj->Clear(); 
     if(trkh_obj) trkh_obj->Clear();
     if(calo1_obj)calo1_obj->Clear();
     if(calo2_obj)calo2_obj->Clear();
@@ -207,7 +326,81 @@
     if(timage){
 	timage->Delete();
     }
-    
+};
+
+void PamLevel2::Reset(){
+  //
+  // First of all clear everything
+  //
+  Clear();
+  //
+  // close and reset chains and pointers
+  //    
+  if ( pam_tree ){
+    //
+    // we have first to find which chains we have to delete, then delete the main chain and only after delete the friend chains. Any other order causes a segfault...
+    //
+    TList *temp = pam_tree->GetListOfFriends();
+    TList *contents  = new TList; // create chain friend list
+    contents->SetOwner();
+    TIter next(temp);
+    TChain *questo = 0;
+    while ( (questo = (TChain*) next()) ){
+      TString name =  questo->GetName();
+      contents->Add((TChain*)gROOT->FindObject(name.Data()));// add object to the list
+    };
+    //
+    // deleting the main chain
+    //
+    pam_tree->Delete();
+    //
+    // deleting the friends...
+    //
+    TIter next2(contents);
+    TChain *questa = 0;
+    while ( questa = (TChain*)next2() ){
+      TString name =  questa->GetName();
+      questa->Delete();      
+      questa=NULL;
+    };
+    //
+  };
+  pam_tree = NULL;
+  //
+  if(run_tree)run_tree->Delete();;
+  run_tree = NULL;
+  if(sel_tree)sel_tree->Delete();;
+  sel_tree = NULL;
+  //
+  // Close file
+  //
+  if(l0_file)l0_file->Close("R");
+  l0_file = NULL;
+  //
+  h0_obj    = 0;
+  trk0_obj  = 0;
+  calo0_obj  = 0;
+  //
+  trk2_obj  = 0;
+  trk1_obj  = 0;
+  trkh_obj  = 0;
+  calo1_obj = 0;
+  calo2_obj = 0;
+  tof_obj   = 0;
+  trig_obj  = 0;
+  s4_obj    = 0;
+  nd_obj    = 0;
+  ac_obj    = 0;
+  orb_obj   = 0;
+  //
+  // Reset run pointers
+  //
+  run_obj   = 0;//new GL_RUN();
+  soft_obj   = 0;// Emiliano
+  irun = -1;
+  runfirstentry = 0ULL;
+  runlastentry = 0ULL;    
+  //
 };
 
 
@@ -404,6 +597,16 @@
 }
 //--------------------------------------
 //
+
+/**
+ * Sort physical (tracker) tracks and stores them in the TRefArray (of TrkTrack objects) which pointer is  PamLevel2::sorted_tracks. Left here as backward compatibility method.
+ **/
+void PamLevel2::SortTracks(TString how){
+  printf(" WARNING! obsolete, use SortTracks() and SetSortingMethod(TString) instead! \n Setting sorting method to %s \n",how.Data());
+  howtosort = how;  
+  SortTracks();
+};
+
 //
 //--------------------------------------
 /**
@@ -417,209 +620,345 @@
  * 
  * The total number of physical tracks is always given by GetNTracks() and the it-th physical track can be retrieved by means of the methods GetTrack(int it) and GetTrack(int it, TString how).
  */
-void PamLevel2::SortTracks(TString how){
+void PamLevel2::SortTracks(){
+  TString how = howtosort;
 
-//    cout <<" PamLevel2::SortTracks(TString how) "<<endl;
-    if( !trk2_obj ){
-	cout << "void PamLevel2::SortTracks(TString how):  TrkLevel2 not loaded !!!";
-	return;
-    };
-//    cout << "call SortTracs() "<<endl;
+  //    cout <<" PamLevel2::SortTracks(TString how) "<<endl;
+  if( !trk2_obj ){
+    cout << "void PamLevel2::SortTracks():  TrkLevel2 not loaded !!!";
+    return;
+  };
+  //    cout << "call SortTracs() "<<endl;
   //Save current Object count
-    Int_t ObjectNumber = TProcessID::GetObjectCount();
+  Int_t ObjectNumber = TProcessID::GetObjectCount();
 
-//    cout << "ObjectNumber  "<<ObjectNumber <<endl;
+  //    cout << "ObjectNumber  "<<ObjectNumber <<endl;
 
-//     if(!sorted_tracks)sorted_tracks = new TRefArray();
-//     sorted_tracks->Clear();
-//    sorted_tracks.Clear();
+  //     if(!sorted_tracks)sorted_tracks = new TRefArray();
+  //     sorted_tracks->Clear();
+  //    sorted_tracks.Clear();
 
-    if(!tsorted)tsorted = new TClonesArray("PamTrack",trk2_obj->GetNTracks());
-    tsorted->Delete();
-    TClonesArray &ttsorted = *tsorted;
-    if(!timage)timage = new TClonesArray("PamTrack",trk2_obj->GetNTracks());
-    timage->Delete();
-    TClonesArray &ttimage = *timage;
+  if(!tsorted)tsorted = new TClonesArray("PamTrack",trk2_obj->GetNTracks());
+  tsorted->Delete();
+  TClonesArray &ttsorted = *tsorted;
+  if(!timage)timage = new TClonesArray("PamTrack",trk2_obj->GetNTracks());
+  timage->Delete();
+  TClonesArray &ttimage = *timage;
 
 
-    // loop over the tracks sorted by the tracker
-    Bool_t use_TRK = how.Contains("TRK", TString::kIgnoreCase);
-    Bool_t use_CAL = how.Contains("CAL", TString::kIgnoreCase);
-    Bool_t use_TOF = how.Contains("TOF", TString::kIgnoreCase);
+  // loop over the tracks sorted by the tracker
+  Bool_t use_TRK = how.Contains("TRK", TString::kIgnoreCase);
+  Bool_t use_CAL = how.Contains("CAL", TString::kIgnoreCase);
+  Bool_t use_TOF = how.Contains("TOF", TString::kIgnoreCase);
     
-    if( !CAL2 &&  use_CAL) use_CAL = false;
-    if( !TOF &&  use_TOF) use_TOF = false;
+  if( !CAL2 &&  use_CAL) use_CAL = false;
+  if( !TOF &&  use_TOF) use_TOF = false;
     
-    if( !TRK2 ){
-//	cout << "SortTracks() : without tracker does not work!!! (not yet)" << endl;
-	return;
-    };
+  if( !TRK2 ){
+    //	cout << "SortTracks() : without tracker does not work!!! (not yet)" << endl;
+    return;
+  };
 
-    //   cout << "use_CAL "<<use_CAL<<" use_TOF "<<use_TOF<<" use_TRK "<<use_TRK <<endl;
+  //   cout << "use_CAL "<<use_CAL<<" use_TOF "<<use_TOF<<" use_TRK "<<use_TRK <<endl;
     
-    for(Int_t i=0; i < trk2_obj->TrkLevel2::GetNTracks(); i++){
+  for(Int_t i=0; i < trk2_obj->TrkLevel2::GetNTracks(); i++){
 	
-	TrkTrack   *ts = 0;
-	CaloTrkVar *cs = 0;
-	ToFTrkVar  *os = 0;
-	
-	// get tracker tracks
-	TrkTrack   *tp = trk2_obj->TrkLevel2::GetTrack(i);                    //tracker
-	CaloTrkVar *cp = GetCaloStoredTrack(tp->GetSeqNo());
-	ToFTrkVar  *op = GetToFStoredTrack(tp->GetSeqNo());
-
-	TrkTrack   *ti = 0;              //tracker (image)
-	CaloTrkVar *ci = 0;
-	ToFTrkVar  *oi = 0;
-//	cout << "trk track n. "<<i << " "<<hex<< tp <<dec<< endl;
-	// if track has an image, check image selection
-	if(tp->HasImage()){
+    TrkTrack   *ts = 0;
+    CaloTrkVar *cs = 0;
+    ToFTrkVar  *os = 0;
+	
+    // get tracker tracks
+    TrkTrack   *tp = trk2_obj->TrkLevel2::GetTrack(i);                    //tracker
+    CaloTrkVar *cp = GetCaloStoredTrack(tp->GetSeqNo());
+    ToFTrkVar  *op = GetToFStoredTrack(tp->GetSeqNo());
+
+    TrkTrack   *ti = 0;              //tracker (image)
+    CaloTrkVar *ci = 0;
+    ToFTrkVar  *oi = 0;
+    //	cout << "trk track n. "<<i << " "<<hex<< tp <<dec<< endl;
+    // if track has an image, check image selection
+    if(tp->HasImage()){
 	    
-	    ti = trk2_obj->TrkLevel2::GetTrackImage(i);              //tracker (image)
-	    ci = GetCaloStoredTrack(ti->GetSeqNo());
-	    oi = GetToFStoredTrack(ti->GetSeqNo());
+      ti = trk2_obj->TrkLevel2::GetTrackImage(i);              //tracker (image)
+      ci = GetCaloStoredTrack(ti->GetSeqNo());
+      oi = GetToFStoredTrack(ti->GetSeqNo());
 	    
-//	    cout << "its image "<<i << " "<<hex<< ti <<dec<< endl;
+      //	    cout << "its image "<<i << " "<<hex<< ti <<dec<< endl;
 
-	    //assign starting scores
-	    Int_t tp_score = 0;  //main track sorted by the tracker
-	    Int_t ti_score = 0;  //image track
+      //assign starting scores
+      Int_t tp_score = 0;  //main track sorted by the tracker
+      Int_t ti_score = 0;  //image track
 	    
-	    // ------------------------
-	    // calorimeter check
-	    // ------------------------
-	    // check the Y spatial residual on the first calorimeter plane
-	    // (cut on calorimeter variables from Emiliano)
-	    if( use_CAL && !calo2_obj ){
-		cout << "void PamLevel2::SortTracks(TString how): how= "<<how<<" but CaloLevel2 not loaded !!!";
-		return;
-	    };
-	    if(
-		use_CAL            &&
-		calo2_obj->npcfit[1] > 15     &&   //no. of fit planes on Y view
-		calo2_obj->varcfit[1] < 1000. &&  //fit variance on Y view
-		true){
+      // ------------------------
+      // calorimeter check
+      // ------------------------
+      // check the Y spatial residual on the first calorimeter plane
+      // (cut on calorimeter variables from Emiliano)
+      if( use_CAL && !calo2_obj ){
+	cout << "void PamLevel2::SortTracks(): howtosort= "<<how<<" but CaloLevel2 not loaded !!!";
+	return;
+      };
+      if(
+	 use_CAL            &&
+	 calo2_obj->npcfit[1] > 5     &&   //no. of fit planes on Y view
+	 calo2_obj->varcfit[1] < 1000. &&  //fit variance on Y view
+	 cp && ci &&
+	 true){
 
 		
-		Float_t resy_p = cp->tbar[0][1] - calo2_obj->cbar[0][1]; if(resy_p < 0)resy_p= - resy_p;
-		Float_t resy_i = ci->tbar[0][1] - calo2_obj->cbar[0][1]; if(resy_i < 0)resy_i= - resy_i;
+	Float_t resy_p = cp->tbar[0][1] - calo2_obj->cbar[0][1]; if(resy_p < 0)resy_p= - resy_p;
+	Float_t resy_i = ci->tbar[0][1] - calo2_obj->cbar[0][1]; if(resy_i < 0)resy_i= - resy_i;
 		
-		if(resy_p <= resy_i) tp_score++;
-		else                 ti_score++;
+	if(resy_p <= resy_i) tp_score++;
+	else                 ti_score++;
+	
+	//	cout << "CALO "<<tp_score<<ti_score<<endl;
 
-//		cout << "CALO "<<tp_score<<ti_score<<endl;
+      };
+      // ------------------------
+      // TOF check
+      // ------------------------	    
+      // check the number of hit pmts along the track 
+      // on S12 S21 and S32, where paddles are parallel to Y axis
+      if( use_TOF && !tof_obj ){
+	cout << "void PamLevel2::SortTracks(): howtosort= "<<how<<" but ToFLevel2 not loaded !!!";
+	return;
+      };
+      if( use_TOF && op && oi ){
+		
+	//
+	Float_t sen = 0.;
+	for (Int_t ih=0; ih < op->npmtadc; ih++){
+	  Int_t pl = tof_obj->GetPlaneIndex( (op->pmtadc).At(ih) );
+	  if ( pl == 2 || pl == 3 || pl == 4 || pl == 5 ) sen += (op->dedx).At(ih);
+	};
+	for (Int_t ih=0; ih < oi->npmtadc; ih++){
+	  Int_t pl = tof_obj->GetPlaneIndex( (oi->pmtadc).At(ih) );
+	  if ( pl == 2 || pl == 3 || pl == 4 || pl == 5 ) sen += (oi->dedx).At(ih);
+	};
+	//
+	if (  sen >= sortthr ){
+	  //printf(" IS A NUCLEUS! en = %f \n",sen);
+	  //
+	  // is a nucleus use a different algorithm
+	  //
+	  Int_t nz = 6; Float_t zin[6];                                          // << define TOF z-coordinates
+	  for(Int_t ip=0; ip<nz; ip++) 
+	    zin[ip] = tof_obj->ToFLevel2::GetZTOF(tof_obj->ToFLevel2::GetToFPlaneID(ip));     // << read ToF plane z-coordinates
+	  Trajectory *tr = new Trajectory(nz,zin);
+	  //
+	  Int_t nphit_p =0;
+	  Int_t nphit_i =0;
+	  Float_t enhit_p = 0.;
+	  Float_t enhit_i = 0.;
+	  //
+	  for (Int_t ih=0; ih < op->npmtadc; ih++){
+	    Int_t pl = tof_obj->GetPlaneIndex( (op->pmtadc).At(ih) );
+	    if(pl == 1 || pl == 2 || pl == 5){
+	      nphit_p++;
+	      enhit_p += (op->dedx).At(ih);
+	    };
+	  };
+	  //
+	  tp->DoTrack2(tr);
+	  //
+	  if ( fabs(tr->y[0]-oi->ytofpos[0]) < 2. ){
+	    for (Int_t ih=0; ih < op->npmtadc; ih++){
+	      Int_t pl = tof_obj->GetPlaneIndex( (op->pmtadc).At(ih) );
+	      if(pl == 0){
+		nphit_p++;
+		enhit_p += (op->dedx).At(ih);
+	      };
+	    };
+	  };
+	  if ( fabs(tr->y[3]-oi->ytofpos[1]) < 2. ){
+	    for (Int_t ih=0; ih < op->npmtadc; ih++){
+	      Int_t pl = tof_obj->GetPlaneIndex( (op->pmtadc).At(ih) );
+	      if(pl == 3){
+		nphit_p++;
+		enhit_p += (op->dedx).At(ih);
+	      };
+	    };
+	  };
+	  if ( fabs(tr->y[4]-oi->ytofpos[2]) < 2. ){
+	    for (Int_t ih=0; ih < op->npmtadc; ih++){
+	      Int_t pl = tof_obj->GetPlaneIndex( (op->pmtadc).At(ih) );
+	      if(pl == 4){
+		nphit_p++;
+		enhit_p += (op->dedx).At(ih);
+	      };
+	    };
+	  };
 
+	  for (Int_t ih=0; ih < oi->npmtadc; ih++){
+	    Int_t pl = tof_obj->GetPlaneIndex( (oi->pmtadc).At(ih) );
+	    if(pl == 1 || pl == 2 || pl == 5){
+	      nphit_i++;	
+	      enhit_i += (op->dedx).At(ih);
+	    };
+	  };
+	  //
+	  ti->DoTrack2(tr);
+	  //
+	  if ( fabs(tr->y[0]-oi->ytofpos[0]) < 2. ){
+	    for (Int_t ih=0; ih < oi->npmtadc; ih++){
+	      Int_t pl = tof_obj->GetPlaneIndex( (oi->pmtadc).At(ih) );
+	      if(pl == 0){
+		nphit_i++;
+		enhit_i += (op->dedx).At(ih);
+	      };
+	    };
+	  };
+	  if ( fabs(tr->y[3]-oi->ytofpos[1]) < 2. ){
+	    for (Int_t ih=0; ih < oi->npmtadc; ih++){
+	      Int_t pl = tof_obj->GetPlaneIndex( (oi->pmtadc).At(ih) );
+	      if(pl == 3){
+		nphit_i++;
+		enhit_i += (op->dedx).At(ih);
+	      };
 	    };
-	    // ------------------------
-	    // TOF check
-	    // ------------------------	    
-	    // check the number of hit pmts along the track 
-	    // on S12 S21 and S32, where paddles are parallel to Y axis
-	    if( use_TOF && !tof_obj ){
-		cout << "void PamLevel2::SortTracks(TString how): how= "<<how<<" but ToFLevel2 not loaded !!!";
-		return;
+	  };
+	  if ( fabs(tr->y[4]-oi->ytofpos[2]) < 2. ){
+	    for (Int_t ih=0; ih < oi->npmtadc; ih++){
+	      Int_t pl = tof_obj->GetPlaneIndex( (oi->pmtadc).At(ih) );
+	      if(pl == 4){
+		nphit_i++;
+		enhit_i += (op->dedx).At(ih);
+	      };
 	    };
-	    if( use_TOF ){
+	  };		
+
 		
-		Int_t nphit_p =0;
-		Int_t nphit_i =0;
+	  if(
+	     use_TOF            &&
+	     (nphit_p+nphit_i) !=0 &&	
+	     true){
+		    
+	    //	    printf(" seqno %i nphit_p %i nphit_i %i enhit_p %f enhit_i %f \n",trk2_obj->TrkLevel2::GetSeqNo(i),nphit_p,nphit_i,enhit_p,enhit_i); 
+	    //	    printf(" score p %i score i %i \n",tp_score,ti_score);
+	    //		  if( enhit_p > enhit_i ) tp_score++;
+	    //		  if( nphit_p >= nphit_i && enhit_p > enhit_i ) tp_score++;
+	    if ( nphit_p > nphit_i ) tp_score++;
+	    if ( nphit_p < nphit_i ) ti_score++;
+	    if ( nphit_p == nphit_i ){
+	      if ( enhit_p > enhit_i ) tp_score++;
+	      else ti_score++;
+	    };
+	    //	    printf(" dopo score p %i score i %i \n",tp_score,ti_score);
+	  };
+	  delete tr;
+	  //
+	} else {
+	  //
+	  // NOT a NUCLEUS
+	  //
+	  //printf(" NOT a NUCLEUS! en = %f \n",sen);
+
+	  Int_t nphit_p =0;
+	  Int_t nphit_i =0;
 		
 		
-/*				cout << "track: npmtadc "<< op->npmtadc << endl;
-				cout << "track: npmttdc "<< op->npmttdc << endl;
-				cout << "image: npmtadc "<< oi->npmtadc << endl;
-				cout << "image: npmttdc "<< oi->npmttdc << endl;*/
+	  /*				cout << "track: npmtadc "<< op->npmtadc << endl;
+	    cout << "track: npmttdc "<< op->npmttdc << endl;
+	    cout << "image: npmtadc "<< oi->npmtadc << endl;
+	    cout << "image: npmttdc "<< oi->npmttdc << endl;*/
 		
-		for (Int_t ih=0; ih < op->npmtadc; ih++){
-		    Int_t pl = tof_obj->GetPlaneIndex( (op->pmtadc).At(ih) );
-		    if(pl == 1 || pl == 2 || pl == 5)nphit_p++;
-		};
+	  for (Int_t ih=0; ih < op->npmtadc; ih++){
+	    Int_t pl = tof_obj->GetPlaneIndex( (op->pmtadc).At(ih) );
+	    if(pl == 1 || pl == 2 || pl == 5)nphit_p++;
+	  };
 		
-		for (Int_t ih=0; ih < oi->npmtadc; ih++){
-		    Int_t pl = tof_obj->GetPlaneIndex( (oi->pmtadc).At(ih) );
-		    if(pl == 1 || pl == 2 || pl == 5)nphit_i++;	
-		};
+	  for (Int_t ih=0; ih < oi->npmtadc; ih++){
+	    Int_t pl = tof_obj->GetPlaneIndex( (oi->pmtadc).At(ih) );
+	    if(pl == 1 || pl == 2 || pl == 5)nphit_i++;	
+	  };
 		
-		if(
-		    use_TOF            &&
-		    (nphit_p+nphit_i) !=0 &&	
-		    true){
+	  if(
+	     use_TOF            &&
+	     (nphit_p+nphit_i) !=0 &&	
+	     true){
 		    
-		    if( nphit_p >= nphit_i) tp_score++;
-		    else ti_score++;
-		};
-//		cout << "TOF "<<tp_score<<ti_score<<endl;
-	    };
-	    if(tp_score == ti_score) use_TRK = true;
-	    // ------------------------
-	    // tracker check
-	    // ------------------------
-	    // chi**2 difference is not always large enough to distinguish among 
-	    // the real track and its image.
-	    // Tracker check will be applied always when calorimeter and tof information is ambiguous.
-	    if(use_TRK){
-		if(      tp->chi2 > 0 && tp->chi2 < ti->chi2 ) tp_score++ ;
-		else if( ti->chi2 > 0 && ti->chi2 < tp->chi2 ) ti_score++ ;
-//		cout << "TRK "<<tp_score<<ti_score<<endl;
-	    };
+	    if( nphit_p >= nphit_i) tp_score++;
+	    else ti_score++;
+	  };
+	};
+	//	cout << "TOF "<<tp_score<<ti_score<<endl;
+      };
+      if(tp_score == ti_score) use_TRK = true;
+      // ------------------------
+      // tracker check
+      // ------------------------
+      // chi**2 difference is not always large enough to distinguish among 
+      // the real track and its image.
+      // Tracker check will be applied always when calorimeter and tof information is ambiguous.
+      if(use_TRK){
+	if(      tp->chi2 > 0 && tp->chi2 < ti->chi2 ) tp_score++ ;
+	else if( ti->chi2 > 0 && ti->chi2 < tp->chi2 ) ti_score++ ;
+	//	cout << "TRK "<<tp_score<<ti_score<<endl;
+      };
 	    
-	    // ------------------------
-	    // the winner is....
-	    // ------------------------	    
-	    if      (tp_score > ti_score) {
-// 		ts = tp;//the track sorted by the tracker!!
-// 		cs = cp;
-// 		os = op;
-	    }else if (tp_score < ti_score) {
-		ts = ti;//its image!!
-		cs = ci;
-		os = oi;
-
-		ti = tp;//its image!!
-		ci = cp;
-		oi = op;
-
-		tp = ts;//its image!!
-		cp = cs;
-		op = os;
+      // ------------------------
+      // the winner is....
+      // ------------------------	    
+      if      (tp_score > ti_score) {
+	// 		ts = tp;//the track sorted by the tracker!!
+	// 		cs = cp;
+	// 		os = op;
+	//	cout << "It's primary!" << endl;
+
+      }else if (tp_score < ti_score) {
+
+	//	cout << "It's image!" << endl;
+
+	ts = ti;//its image!!
+	cs = ci;
+	os = oi;
+
+	ti = tp;//its image!!
+	ci = cp;
+	oi = op;
+
+	tp = ts;//its image!!
+	cp = cs;
+	op = os;
 
 		
-	    }else {
-// 		ts = tp;
-// 		cs = cp;
-// 		os = op;
-//				cout << "Warning - track image ambiguity not solved" << endl;
-//				cout << ts->GetNtot() << " "<< ts->chi2 << " " << npcfit[1] << " "<< nphit_p << endl;
-	    };
+      }else {
+	// 		ts = tp;
+	// 		cs = cp;
+	// 		os = op;
+	cout << "Warning - track image ambiguity not solved" << endl;
+	//				cout << ts->GetNtot() << " "<< ts->chi2 << " " << npcfit[1] << " "<< nphit_p << endl;
+      };
 	    
-	}else{
-// 	    ts = tp;
-// 	    cs = cp;
-// 	    os = op;
-	};
-	
-//	cout <<" SortTracks() "<<i<<" -- "<<ts<<endl;
-//	sorted_tracks->Add(ts);//save the track in the sorted array
-//	sorted_tracks.Add(ts);//save the track in the sorted array
-//	sorted_tracks.Add(tp);//save the track in the sorted array
-//	cout << "SortTracks:: sorted_tracks->Add(it) "<<i<<" "<<ts<<endl;
-//	cout<<"o "<<tp<<endl;
-//	cout<<"o "<<cp<<endl;
-//	cout<<"o "<<op<<endl;
-	new(ttsorted[i]) PamTrack(tp,cp,op);
-	new(ttimage[i])  PamTrack(ti,ci,oi);
-    };
-
-    if( tsorted->GetEntries() != trk2_obj->GetNTracks() ){
-	cout << "void PamLevel2::SortTracks(TString how): tsorted->GetEntries() "<<tsorted->GetEntries()<<" != trk2_obj->GetNTracks() = "<<trk2_obj->GetNTracks() <<endl;
-	tsorted->Delete(); tsorted=0;
-	timage->Delete(); timage=0;	
-    }
-
-    //Restore Object count 
-    //To save space in the table keeping track of all referenced objects
-    //We reset the object count to what it was at the beginning of the event.
-    TProcessID::SetObjectCount(ObjectNumber);
+    }else{
+      // 	    ts = tp;
+      // 	    cs = cp;
+      // 	    os = op;
+    };
+	
+    //	cout <<" SortTracks() "<<i<<" -- "<<ts<<endl;
+    //	sorted_tracks->Add(ts);//save the track in the sorted array
+    //	sorted_tracks.Add(ts);//save the track in the sorted array
+    //	sorted_tracks.Add(tp);//save the track in the sorted array
+    //	cout << "SortTracks:: sorted_tracks->Add(it) "<<i<<" "<<ts<<endl;
+    //	cout<<"o "<<tp<<endl;
+    //	cout<<"o "<<cp<<endl;
+    //	cout<<"o "<<op<<endl;
+    new(ttsorted[i]) PamTrack(tp,cp,op);
+    new(ttimage[i])  PamTrack(ti,ci,oi);
+  };
+
+  if( tsorted->GetEntries() != trk2_obj->GetNTracks() ){
+    cout << "void PamLevel2::SortTracks(): tsorted->GetEntries() "<<tsorted->GetEntries()<<" != trk2_obj->GetNTracks() = "<<trk2_obj->GetNTracks() <<endl;
+    tsorted->Delete(); tsorted=0;
+    timage->Delete(); timage=0;	
+  }
+
+  //Restore Object count 
+  //To save space in the table keeping track of all referenced objects
+  //We reset the object count to what it was at the beginning of the event.
+  TProcessID::SetObjectCount(ObjectNumber);
     
 };
 //--------------------------------------
@@ -643,7 +982,7 @@
 TClonesArray *PamLevel2::GetTracks(){
 
 //  *-*-*-*-*-*-*-*-*-*-*-*-*
-    SortTracks("+CAL+TOF");
+    SortTracks();
 //  *-*-*-*-*-*-*-*-*-*-*-*-*
 
     return tsorted;
@@ -662,7 +1001,7 @@
 
 //    if(!trk2_obj) return 0;
 	
-// //  *-*-*-*-*-*-*-*-*-*-*-*-*
+// //  *-*-*-*+-*-*-*-*-*-*-*-*-*
 //     SortTracks("+CAL+TOF");
 // //  *-*-*-*-*-*-*-*-*-*-*-*-*
 // //    if(!sorted_tracks)return 0;
@@ -681,7 +1020,7 @@
 
 //    cout << "PamLevel2::GetTrack(int it) "<<endl;
 //  *-*-*-*-*-*-*-*-*-*-*-*-*
-    SortTracks("+CAL+TOF");
+    SortTracks();
 //  *-*-*-*-*-*-*-*-*-*-*-*-*
     if(!tsorted)return 0;
     if(!tsorted->GetEntries())return 0;
@@ -738,7 +1077,7 @@
 
 
 //  *-*-*-*-*-*-*-*-*-*-*-*-*
-    SortTracks("+CAL+TOF");
+    SortTracks();
 //  *-*-*-*-*-*-*-*-*-*-*-*-*
     if(!timage)return 0;
     if(!timage->GetEntries())return 0;
@@ -775,6 +1114,14 @@
 
 //     if( !detlist.IsNull() ) SetWhichTrees(detlist);
 //     else                    GetWhichTrees(f);
+  if ( pam_tree ){
+    printf("WARNING: TTree *PamLevel2::GetPamTree(TFile *fl, TString detlist) -- pam_tree already exists!\n ");
+    return pam_tree;
+  };
+  //
+
+    cout << "TTree *PamLevel2::GetPamTree(TFile *f, TString detlist ) -- obsolte "<<endl;
+
     SetWhichTrees(detlist);
 
     TTree *Trout =0;
@@ -782,7 +1129,7 @@
     TString fname = f->GetName();
     if(!CheckLevel2File(fname))return NULL;
 
-    UInt_t *found=0;    
+//    UInt_t *found=0;    
 
     cout<< "GetPamTree(TFile*,TString): detector list --> ";
     if(TRK1)cout<<"TRK1 ";
@@ -797,6 +1144,7 @@
     if(S4)cout<<"S4 ";
     if(ORB)cout<<"ORB ";
     cout << endl;
+    if(SELLI)cout<<">>> Found selection-list <<<"<<endl;
 
     f->cd();
 
@@ -804,13 +1152,13 @@
     TTree *T = (TTree*)f->Get("Tracker");
     if(T && (TRK2||TRK1||TRKh)) {
 	if(TRK2)T->SetBranchAddress("TrkLevel2", GetPointerTo("TrkLevel2"));
-	else    T->SetBranchStatus("TrkLevel2",0,found);
+//	else    T->SetBranchStatus("TrkLevel2",0,found);
 	if(TRK2)cout << "Tracker      : set branch address TrkLevel2"<<endl;
 	if(TRK1)T->SetBranchAddress("TrkLevel1", GetPointerTo("TrkLevel1"));
-	else    T->SetBranchStatus("TrkLevel1",0,found);
+//	else    T->SetBranchStatus("TrkLevel1",0,found);
 	if(TRK1)cout << "Tracker      : set branch address TrkLevel1"<<endl;
  	if(TRKh)T->SetBranchAddress("TrkHough", GetPointerTo("TrkHough"));
-	else    T->SetBranchStatus("TrkHough",0,found);
+//	else    T->SetBranchStatus("TrkHough",0,found);
  	if(TRKh)cout << "Tracker      : set branch address TrkHough"<<endl;
         if(!Trout)Trout=T;
         else Trout->AddFriend(T);
@@ -821,10 +1169,10 @@
     TTree *C = (TTree*)f->Get("Calorimeter");
     if(C && (CAL2||CAL1)) {
         if(CAL2)C->SetBranchAddress("CaloLevel2", GetPointerTo("CaloLevel2"));
-	else    C->SetBranchStatus("CaloLevel2",0,found);
+//	else    C->SetBranchStatus("CaloLevel2",0,found);
         if(CAL2)cout << "Calorimeter  : set branch address CaloLevel2"<<endl;
         if(CAL1)C->SetBranchAddress("CaloLevel1", GetPointerTo("CaloLevel1"));
-	else    C->SetBranchStatus("CaloLevel1",0,found);
+//	else    C->SetBranchStatus("CaloLevel1",0,found);
         if(CAL1)cout << "Calorimeter  : set branch address CaloLevel1"<<endl;
         if(!Trout)Trout=C;
         else Trout->AddFriend(C);
@@ -847,7 +1195,7 @@
     if(R && TRG) {
         R->SetBranchAddress("TrigLevel2", GetPointerTo("TrigLevel2"));
         cout << "Trigger      : set branch address TrigLevel2"<<endl;
-        if(!Trout)Trout=O;
+        if(!Trout)Trout=R;
         else Trout->AddFriend(R);
     }else{
         cout << "Trigger      : missing tree"<<endl;
@@ -857,7 +1205,7 @@
     if(S && S4) {
         S->SetBranchAddress("S4Level2", GetPointerTo("S4Level2"));
         cout << "S4           : set branch address S4Level2"<<endl;
-        if(!Trout)Trout=O;
+        if(!Trout)Trout=S;
         else Trout->AddFriend(S);
     }else{
         cout << "S4           : missing tree"<<endl;
@@ -867,7 +1215,7 @@
     if(N && ND) {
         N->SetBranchAddress("NDLevel2", GetPointerTo("NDLevel2"));
         cout << "NeutronD     : set branch address NDLevel2"<<endl;
-        if(!Trout)Trout=O;
+        if(!Trout)Trout=N;
         else Trout->AddFriend(N);
     }else{
         cout << "NeutronD     : missing tree"<<endl;
@@ -877,7 +1225,7 @@
     if(A && AC) {
         A->SetBranchAddress("AcLevel2", GetPointerTo("AcLevel2"));
         cout << "Anticounter  : set branch address AcLevel2"<<endl;
-        if(!Trout)Trout=O;
+        if(!Trout)Trout=A;
         else Trout->AddFriend(A);
     }else{
         cout << "Anticounter  : missing tree"<<endl;
@@ -887,13 +1235,29 @@
     if(B && ORB) {
 	B->SetBranchAddress("OrbitalInfo", GetPointerTo("OrbitalInfo"));
 	cout << "OrbitalInfo  : set branch address OrbitalInfo"<<endl;
-	if(!Trout)Trout=O;
+	if(!Trout)Trout=B;
 	else Trout->AddFriend(B);
     }else{
 	cout << "OrbitalInfo  : missing tree"<<endl;
     };
+
+    TTree *L = (TTree*)f->Get("SelectionList");
+    if(L && SELLI==1) {
+// 	L->SetBranchAddress("RunEntry",&irun);
+// 	cout << "SelectionList: set branch address RunEntry"<<endl;
+// 	L->SetBranchAddress("EventEntry",&irunentry);
+// 	cout << "SelectionList: set branch address EventEntry"<<endl;
+// 	if(!Trout)Trout=O;
+// 	else Trout->AddFriend("SelectionList");
+	cout << " TTree *PamLevel2::GetPamTree(TFile, TString) >>> SelectionList not implemente!!!!"<<endl;
+	sel_tree = 0;
+    }else{
+	cout << "SelectionList  : missing tree"<<endl;
+    };
     
     cout<<endl<<" Number of entries: "<<Trout->GetEntries()<<endl<<endl;
+
+    pam_tree = (TChain*)Trout;
     
     return Trout;
     
@@ -913,10 +1277,13 @@
 	
     TString wdir = gSystem->WorkingDirectory();	
     
-    if(ddir=="")ddir = wdir;
+    //    if(ddir=="")ddir = wdir;
 //	TSystemDirectory *datadir = new TSystemDirectory(gSystem->BaseName(ddir),ddir);
-    cout << "Level2 data directory : "<<  ddir << endl;
-    
+    if ( ddir != ""){
+      cout << "Level2 data directory : "<<  ddir << endl;
+    } else {
+      cout << "Level2 data directory not given as input: trying to evaluate from list or taking working directory " << endl;
+    };
     TList *contents  = new TList; // create output list
     contents->SetOwner();
     
@@ -932,6 +1299,7 @@
 // 	    return 0;
 // 	}	
 // 	flisttxt = fullpath;
+      if ( !flisttxt.EndsWith(".root") ){
 
 	flisttxt = gSystem->ConcatFileName(gSystem->DirName(flisttxt),gSystem->BaseName(flisttxt));
 
@@ -963,21 +1331,39 @@
 //	    cout <<"(2) " << file << endl;
 //	    if( gSystem->IsFileInIncludePath(file,&fullpath) ){
 //	    if( (fullpath = gSystem->FindFile(ddir,file)) ){
-	    char *fullpath = gSystem->ConcatFileName(gSystem->DirName(ddir),gSystem->BaseName(file));
-	    contents->Add(new TSystemFile(fullpath,gSystem->DirName(fullpath)));// add file to the list
-	    delete fullpath;
+	    if( file.EndsWith(".root") ){
+	      TString filedir;
+	      if (ddir != ""){
+		filedir = ddir; // take the input dir
+	      } else {
+		gSystem->ChangeDirectory(wdir); // back to the working directory
+		filedir = gSystem->DirName(file); // this will take the path if exist in the list otherwise it will return automatically the working dir
+	      };
+		char *fullpath = gSystem->ConcatFileName(gSystem->DirName(filedir),gSystem->BaseName(file));
+		contents->Add(new TSystemFile(fullpath,gSystem->DirName(fullpath)));// add file to the list
+		delete fullpath;
+	    }
 //	    }else{
 //		if(file.Data()!="")cout << "File: "<<file<<" ---> missing "<< endl;
 //	    };
 	};
 	in.close();
-	
+      } else {
+	  if(flisttxt.Contains("#"))flisttxt = flisttxt(0,flisttxt.First("#"));
+	  char *fullpath = gSystem->ConcatFileName(gSystem->DirName(flisttxt),gSystem->BaseName(flisttxt));
+	  contents->Add(new TSystemFile(fullpath,gSystem->DirName(fullpath)));// add file to the list
+	  delete fullpath;
+      };	
     }else{
 	
 	cout << "No input file list given."<<endl;
 	cout << "Check for existing root files."<<endl;
 //		cout << "Warking directory: "<< gSystem->WorkingDirectory()<< endl;
-	
+	if ( ddir == "" ){
+	  ddir = wdir;
+	  cout << "Level2 data directory : "<<  ddir << endl;
+	};
+
 	TSystemDirectory *datadir = new TSystemDirectory(gSystem->BaseName(ddir),ddir);
 	TList *temp = datadir->GetListOfFiles();
 //		temp->Print();
@@ -1021,6 +1407,14 @@
  * @return Pointer to a TChain
  */
 TChain *PamLevel2::GetPamTree(TList *fl, TString detlist ){
+  //
+  //
+  //
+  if ( pam_tree ){
+    printf("WARNING: TChain *PamLevel2::GetPamTree(TList *fl, TString detlist) -- pam_tree already exists!\n ");
+    return pam_tree;
+  };
+  //
     
     TChain *Trout =0;
 
@@ -1041,14 +1435,16 @@
     if(ORB)cout<<"ORB ";
     cout << endl;
 
-    TChain *T = 0;	
-    TChain *C = 0;
-    TChain *O = 0;
-    TChain *R = 0;
-    TChain *S = 0;
-    TChain *N = 0;
-    TChain *A = 0;
-    TChain *B = 0;
+     TChain *T = 0;	
+     TChain *C = 0;
+     TChain *O = 0;
+     TChain *R = 0;
+     TChain *S = 0;
+     TChain *N = 0;
+     TChain *A = 0;
+     TChain *B = 0;
+
+     TChain *L = 0;
     
     if(TRK2||TRK1||TRKh) T = new TChain("Tracker");	
     if(CAL2||CAL1)       C = new TChain("Calorimeter");
@@ -1058,6 +1454,7 @@
     if(ND)               N = new TChain("NeutronD");
     if(AC)               A = new TChain("Anticounter");
     if(ORB)              B = new TChain("OrbitalInfo");
+     L = new TChain("SelectionList");
     
     // loop over files and create chains	
     TIter next(fl);
@@ -1074,35 +1471,37 @@
 	    if(ND)               N->Add(name);
 	    if(AC)               A->Add(name);
 	    if(ORB)              B->Add(name);
+	    if(SELLI==1)         L->Add(name);
 	};
-    }
+    };
     
     cout << "done chain \n";
+    cout << "+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+" <<endl;
 
-    UInt_t *found=0;
+//    UInt_t *found=0;
 // Tracker
     if(T && (TRK2||TRK1||TRKh)) {
 	if(TRK2)T->SetBranchAddress("TrkLevel2", GetPointerTo("TrkLevel2"));
-	else    T->SetBranchStatus("TrkLevel2",0,found);
+//	else    T->SetBranchStatus("TrkLevel2",0,found);
 	if(TRK2)cout << "Tracker      : set branch address TrkLevel2"<<endl;
 	if(TRK1)T->SetBranchAddress("TrkLevel1", GetPointerTo("TrkLevel1"));
-	else    T->SetBranchStatus("TrkLevel1",0,found);
+//	else    T->SetBranchStatus("TrkLevel1",0,found);
 	if(TRK1)cout << "Tracker      : set branch address TrkLevel1"<<endl;
  	if(TRKh)T->SetBranchAddress("TrkHough", GetPointerTo("TrkHough"));
-	else    T->SetBranchStatus("TrkHough",0,found);
+//	else    T->SetBranchStatus("TrkHough",0,found);
  	if(TRKh)cout << "Tracker      : set branch address TrkHough"<<endl;
         if(!Trout)Trout=T;
-        else Trout->AddFriend("Tracker");
+	else Trout->AddFriend("Tracker");
     }else{
         cout << "Tracker      : missing tree"<<endl;
     };
     // Calorimeter
     if(C && (CAL2||CAL1)) {
         if(CAL2)C->SetBranchAddress("CaloLevel2", GetPointerTo("CaloLevel2"));
-	else    C->SetBranchStatus("CaloLevel2",0,found);
+//	else    C->SetBranchStatus("CaloLevel2",0,found);
         if(CAL2)cout << "Calorimeter  : set branch address CaloLevel2"<<endl;
         if(CAL1)C->SetBranchAddress("CaloLevel1", GetPointerTo("CaloLevel1"));
-	else    C->SetBranchStatus("CaloLevel1",0,found);
+//	else    C->SetBranchStatus("CaloLevel1",0,found);
         if(CAL1)cout << "Calorimeter  : set branch address CaloLevel1"<<endl;
         if(!Trout)Trout=C;
         else Trout->AddFriend("Calorimeter");
@@ -1163,55 +1562,28 @@
     }else{
 	cout << "OrbitalInfo  : missing tree"<<endl;
     };
+    cout << "+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+" <<endl;
+
+    // Selection List
+    if(L && SELLI==1) {
+	cout<<">>> Found selection-list <<<"<<endl;
+	L->SetBranchAddress("RunEntry",&irun);
+	cout << "SelectionList: set branch address RunEntry"<<endl;
+	L->SetBranchAddress("EventEntry",&irunentry);
+	cout << "SelectionList: set branch address EventEntry"<<endl;
+	sel_tree = L;
+// 	if(!Trout)Trout=O;
+// 	else Trout->AddFriend("SelectionList");
+	cout << "----------------------------------------------------" <<endl;
+    }else{
+//	cout << "SelectionList  : missing tree"<<endl;
+	if(L)L->Delete();
+    };
     
 //    cout<<endl<<" Number of entries: "<<Trout->GetEntries()<<endl<<endl;
 
-    
-//     // Tracker
-//     if(TRK2||TRK1||TRKh){
-// 	if(!Tout)Tout=T;
-// 	else Tout->AddFriend("Tracker");
-//     }
-//     // Calorimeter
-//     if(CAL2||CAL1) {		
-// 	if(!Tout)Tout=C;
-// 	else Tout->AddFriend("Calorimeter");
-//     };
-//     // ToF    
-//     if(TOF) {
-// 	if(!Tout)Tout=O;
-// 	else Tout->AddFriend("ToF");
-//     };
-//     // Trigger
-//     if(TRG) {
-// 	if(!Tout)Tout=R;
-// 	else Tout->AddFriend("Trigger");
-//     };
-//     // S4
-//     if(S4) {
-// 	if(!Tout)Tout=S;
-// 	else Tout->AddFriend("S4");
-//     };
-//     // Neutron Detector
-//     if(ND) {
-// 	if(!Tout)Tout=N;
-// 	else Tout->AddFriend("NeutronD");
-//     };
-//     // Anticounters
-//     if(AC) {
-// 	if(!Tout)Tout=A;
-// 	else Tout->AddFriend("Anticounter");
-//     };
-//     // OrbitalInfo
-//     if(ORB) {
-// 	if(!Tout)Tout=B;
-// 	else Tout->AddFriend("OrbitalInfo");
-//     };
-    
-//    cout<<endl<<" Number of entries: "<<Tout->GetEntries()<<endl<<endl;
-    
-//    if( Tout->GetEntries() )PamLevel2::SetBranchAddress( Tout );
-    
+    pam_tree = Trout;
+
     return Trout;
 }
 
@@ -1293,6 +1665,13 @@
 	t->SetBranchAddress("OrbitalInfo", GetPointerTo("OrbitalInfo"));
 	cout << "OrbitalInfo  : set branch address OrbitalInfo"<<endl;
     };
+    // SelectionList
+    if(SELLI==1) {
+	t->SetBranchAddress("RunEntry", &irun);
+	cout << "SelectionList: set branch address RunEntry"<<endl;
+	t->SetBranchAddress("EventEntry", &irunentry);
+	cout << "SelectionList: set branch address EventEntry"<<endl;
+    };
     
 }
 /**
@@ -1366,6 +1745,13 @@
 	t->SetBranchAddress("OrbitalInfo", GetPointerTo("OrbitalInfo"));
 	cout << "OrbitalInfo  : set branch address OrbitalInfo"<<endl;
     };
+    // SelectionList
+    if(SELLI==1) {
+	t->SetBranchAddress("RunEntry", &irun);
+	cout << "SelectionList: set branch address RunEntry"<<endl;
+	t->SetBranchAddress("EventEntry", &irunentry);
+	cout << "SelectionList: set branch address EventEntry"<<endl;
+    };
     
 }
 
@@ -1380,8 +1766,15 @@
  * @return Pointer to a TChain
  */
 TChain *PamLevel2::GetRunTree(TList *fl){
-	
-    TChain *R = new TChain("Run");
+  //
+  //
+  //
+  if ( run_tree ){
+    printf("WARNING: TChain *PamLevel2::GetRunTree(TList *fl) -- run_tree already exists!\n ");
+    return run_tree;
+  };	
+  //
+  TChain *R = new TChain("Run");
     
     // loop over files and create chains	
     TIter next(fl);
@@ -1393,12 +1786,20 @@
 	    R->Add(name);
 	};
     }
+
+    if(R->GetNtrees()){
     
-    R->SetBranchAddress("RunInfo", GetPointerTo("RunInfo"));
-    cout << "Run         : set branch address RunInfo"<<endl;
-    R->SetBranchAddress("SoftInfo", GetPointerTo("SoftInfo")); // Emiliano
-    cout << "Software    : set branch address SoftInfo"<<endl; // Emiliano
-    
+	R->SetBranchAddress("RunInfo", GetPointerTo("RunInfo"));
+	cout << "Run         : set branch address RunInfo"<<endl;
+	R->SetBranchAddress("SoftInfo", GetPointerTo("SoftInfo")); // Emiliano
+	cout << "Software    : set branch address SoftInfo"<<endl; // Emiliano
+    }else{
+	delete R;
+	R=0;
+    }
+
+    run_tree = R;
+
     return R;
     
 }
@@ -1412,16 +1813,26 @@
  * @return Pointer to a TTree
  */
 TTree *PamLevel2::GetRunTree(TFile *f){
+  if ( run_tree ){
+    printf("WARNING: TTree *PamLevel2::GetRunTree(TFile *f) -- run_tree already exists!\n ");
+    return run_tree;
+  };
+	
 
+    cout << "TTree *PamLevel2::GetRunTree(TFile *f) -- obsolte "<<endl;
 
-    TTree *R = (TTree*)f->Get("Run");
+    TTree *T = (TTree*)f->Get("Run");
     
-    R->SetBranchAddress("RunInfo", GetPointerTo("RunInfo"));
-    cout << "Run         : set branch address RunInfo"<<endl;
-    R->SetBranchAddress("SoftInfo", GetPointerTo("SoftInfo")); // Emiliano
-    cout << "Software    : set branch address SoftInfo"<<endl; // Emiliano
-    
-    return R;
+    if(T){
+	T->SetBranchAddress("RunInfo", GetPointerTo("RunInfo"));
+	cout << "Run         : set branch address RunInfo"<<endl;
+	T->SetBranchAddress("SoftInfo", GetPointerTo("SoftInfo")); // Emiliano
+	cout << "Software    : set branch address SoftInfo"<<endl; // Emiliano
+    }
+
+    run_tree = (TChain*)T;
+
+    return T;
     
 }
 /**
@@ -1429,40 +1840,234 @@
  * @param run Pointer to the chain/tree which contains run infos 
  * @return true if a new run has been read, false if it is still the same run
  */
-Bool_t PamLevel2::UpdateRunInfo(TChain *run, ULong64_t iev){
+Bool_t PamLevel2::UpdateRunInfo(TChain *run, Long64_t iev){
   //
   // check if we have already called once GetEntry, if not call it
   //
-  if ( run->GetEntries() <= 0 ) return(false);
+    cout << "Bool_t PamLevel2::UpdateRunInfo(TChain *run, Long64_t iev) --- NON FUNZIONA BENISSIMO.... "<<endl;
+    if(!run){
+	  cout << "Bool_t PamLevel2::UpdateRunInfo(TChain *run, ULong64_t iev) -- ERROR -- missing RunInfo tree "<<endl;
+	  return(false);	
+    }
+    if ( run->GetEntries() <= 0 ) return(false);
   //
-  Int_t oldrun = irun;
-  if ( irun < 0 ){
-    irun = 0;
-    run->GetEntry(0);
-    runfirstentry = 0ULL;
-    runlastentry += (ULong64_t)(this->GetRunInfo()->NEVENTS) - 1ULL;
-  };
-  while ( iev > (runfirstentry+(ULong64_t)(this->GetRunInfo()->NEVENTS-1)) && irun < run->GetEntries() ){
-    //    printf(" iev %llu %u %llu \n",iev,this->GetRunInfo()->NEVENTS,(ULong64_t)(runfirstentry+(ULong64_t)(this->GetRunInfo()->NEVENTS)));
-    irun++;
-    run->GetEntry(irun);
-    runfirstentry = runlastentry+1ULL;
-    runlastentry += (ULong64_t)(this->GetRunInfo()->NEVENTS);
+  
+  //  Int_t oldrun = irun;
+  Long64_t oldrun = irun;
+
+  // --------------------------------------
+  // if it is a full file (not preselected)
+  // --------------------------------------
+  if(SELLI==0){
+
+      //
+      // the absolute time is necessary to relate the event with the run
+      //
+      if( !GetOrbitalInfo() ){
+	  cout << "Bool_t PamLevel2::UpdateRunInfo(TChain *run, ULong64_t iev) -- ERROR -- missing OrbitalInfo "<<endl;
+	  return(false);
+      }
+
+      //
+      // the first time the routine is called, set run search from the beginning
+      //
+      if ( irun < 0LL ){
+	  irun = 0LL; 
+	  run->GetEntry(irun);
+ 	  runfirstentry = 0LL;
+ 	  runlastentry += (Long64_t)(this->GetRunInfo()->NEVENTS);
+ 	  if ( (Long64_t)(this->GetRunInfo()->NEVENTS) > 0LL ) runlastentry -= 1LL;
+      };      
+      //
+       if ( irun == run->GetEntries()-1LL && 
+	   !(GetOrbitalInfo()->absTime >= GetRunInfo()->RUNHEADER_TIME && 
+	     GetOrbitalInfo()->absTime <= GetRunInfo()->RUNTRAILER_TIME) 
+	    ){
+	 irun = -1LL;
+	 runfirstentry = 0LL;
+	 runlastentry = -1LL;
+       };
+      // modificato il controllo sull'aggiornamento del run, per evitare problemi
+      // dovuti agli eventi annidati (NB! NEVENTS conta anche questi!!)
+      //
+      bool fromfirst = true;
+      //
+      while ( !(GetOrbitalInfo()->absTime >= GetRunInfo()->RUNHEADER_TIME && GetOrbitalInfo()->absTime <= GetRunInfo()->RUNTRAILER_TIME) && irun < run->GetEntries()-1LL ){
+//      while ( iev > (runfirstentry+(ULong64_t)(this->GetRunInfo()->NEVENTS-1)) && irun < run->GetEntries() ){
+	  irun++;
+	  run->GetEntry(irun);
+	  runfirstentry = runlastentry;
+	  if ( (Long64_t)(this->GetRunInfo()->NEVENTS) > 0LL ) runfirstentry += 1LL;
+	  runlastentry += (Long64_t)(this->GetRunInfo()->NEVENTS);
+// 	  cout << " ))))) UPDATE RUN INFO (((((  @iev "<<iev<<" run "<<GetRunInfo()->ID<<" irun "<<irun<<endl;
+// 	  cout << "runfirstentry "<<runfirstentry<<endl;
+	  //	  printf(" iev %llu %u %llu \n",iev,this->GetRunInfo()->NEVENTS,(ULong64_t)(runfirstentry+(ULong64_t)(this->GetRunInfo()->NEVENTS)));
+	  //	  printf(" abstime %u trailertime %u \n",GetOrbitalInfo()->absTime,GetRunInfo()->RUNTRAILER_TIME);
+	  //	  printf(" IDRUN %u \n",GetRunInfo()->ID);
+	  //
+// 	  prevshift = 0;
+	  //
+	  if ( irun == (Long64_t)(run->GetEntries()-1LL) && fromfirst && !(GetOrbitalInfo()->absTime >= GetRunInfo()->RUNHEADER_TIME && GetOrbitalInfo()->absTime <= GetRunInfo()->RUNTRAILER_TIME)){
+	      printf(" resetting irun  (it should NOT happen!!!)\n");
+	      fromfirst = false;
+	      irun = 0;
+	      run->GetEntry(irun);
+	      runfirstentry = 0ULL;
+	      runlastentry += (Long64_t)(this->GetRunInfo()->NEVENTS);
+	      if ( (Long64_t)(this->GetRunInfo()->NEVENTS) > 0LL ) runlastentry -= 1LL;
+	  };
+	  //
+      };
+      //
+      if ( 
+	   !(GetOrbitalInfo()->absTime >= GetRunInfo()->RUNHEADER_TIME && 
+	     GetOrbitalInfo()->absTime <= GetRunInfo()->RUNTRAILER_TIME) 
+	  ) {
+	  printf(" Something very wrong here: cannot find RUN containing absolute time %u \n",GetOrbitalInfo()->absTime);
+	  return false;
+      }
+      //
+      if ( irun == oldrun || irun >= run->GetEntries() ) return(false);
+      //
+      //  printf(" iev %llu irun %i nevents %u 1st %llu last %llu \n",iev,irun,this->GetRunInfo()->NEVENTS,(ULong64_t)runfirstentry,(ULong64_t)runlastentry);
+      //
+      prevshift = 0;
+      cout << " ))))) UPDATE RUN INFO (((((  @iev "<<iev<<" run "<<GetRunInfo()->ID<<" irun "<<irun<<endl;
+//      cout << "runfirstentry "<<runfirstentry<<endl;
+      return(true);    
   };
+  // ----------------------------------------------------
+  // if it is a preselected file (there is SelectionList)
+  // NBNB - the event tree MUST be read first 
+  // ----------------------------------------------------
+  if(SELLI==1){      
+      sel_tree->GetEntry(iev);
+//      cout << irun << " "<< irunentry << endl;
+      if(irun != oldrun){
+	  run->GetEntry(irun);
+	  cout << " ))))) UPDATE RUN INFO (((((  @iev "<<iev<<" run "<<GetRunInfo()->ID<<" irun "<<irun<<endl;
+	  prevshift = 0;
+	  return true;
+      }
+      return false;
+  }
+
+  return false;
   //
-  if ( irun == oldrun || irun >= run->GetEntries() ) return(false);
-  //
-  //  printf(" iev %llu irun %i nevents %u 1st %llu last %llu \n",iev,irun,this->GetRunInfo()->NEVENTS,(ULong64_t)runfirstentry,(ULong64_t)runlastentry);
-  //
-  return(true);    
-  //
+};
+
+Bool_t PamLevel2::UpdateRunInfo(Long64_t iev){
+
+    if(!run_tree){
+	cout << " Bool_t PamLevel2::UpdateRunInfo(ULong64_t iev) -- ERROR -- run tree not loaded"<<endl;
+	return false;
+    }
+    if ( run_tree->GetEntries() <= 0 ) {
+	cout << " Bool_t PamLevel2::UpdateRunInfo(ULong64_t iev) -- ERROR -- run tree is empty"<<endl;
+	return(false);
+    }
+  
+    Int_t oldrun = irun; // store current run index
+
+    // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
+    // if it is a full file (not preselected)
+    // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
+    if(SELLI==0){
+
+	// ---------------------------------------------------------------
+	// the absolute time is necessary to relate the event with the run
+	// ---------------------------------------------------------------
+	if( !GetOrbitalInfo() ){
+	    cout << "Bool_t PamLevel2::UpdateRunInfo(Long64_t iev) -- ERROR -- missing OrbitalInfo "<<endl;
+	    return(false);
+	}
+      
+	// -----------------------------------------------------------------------
+	// the first time the routine is called, set run search from the beginning
+	// -----------------------------------------------------------------------
+	if ( irun < 0 ){
+	    irun = 0LL;
+	    run_tree->GetEntry(irun);
+	};      
+	//
+	bool fromfirst = true; // first loop over runs
+	// ------------------------------------------------------
+	// loop over runs to find the one that contains the event 
+	// ------------------------------------------------------
+	while ( !(GetOrbitalInfo()->absTime >= GetRunInfo()->RUNHEADER_TIME &&    // check on absolute time (s)
+		  GetOrbitalInfo()->absTime <= GetRunInfo()->RUNTRAILER_TIME) && 
+		!(GetOrbitalInfo()->OBT >= GetRunInfo()->RUNHEADER_OBT &&         // additional check on OBT (ms)
+		  GetOrbitalInfo()->OBT <= GetRunInfo()->RUNTRAILER_OBT) && 
+		irun < run_tree->GetEntries() ){
+	    irun++;
+	    // ------------------------------------
+	    // if the end of run tree is reached...
+	    // ------------------------------------
+	    if( irun == run_tree->GetEntries() ){
+		if(!fromfirst){
+		    // -----------------------------------------------------
+		    // if it happened already once and the run was not found
+		    // ---> exit with error
+		    // -----------------------------------------------------
+		    cout << "Bool_t PamLevel2::UpdateRunInfo(Long64_t iev) -- ERROR -- event entry #"<<iev<<" does not belong to any run (should not happen)" <<endl;
+		    return false;
+		}
+		// -----------------------------------------
+		// ...otherwise repeat search from beginning
+		// -----------------------------------------
+		cout << "Bool_t PamLevel2::UpdateRunInfo(Long64_t iev) -- WARNING -- reached end of run tree. searchin again from beginning " <<endl;
+		fromfirst = false;
+		irun = 0LL;
+		runfirstentry = 0LL;
+	    }
+	    // -------------------------------------------------------------------
+	    // save the index of the first entry of the run, relative to pam_tree,
+	    // and read a new run
+	    // -------------------------------------------------------------------
+	    if(irun>0)runfirstentry += (GetRunInfo()->NEVENTS);
+	    run_tree->GetEntry(irun);	   
+	    if(GetRunInfo()->RUNHEADER_OBT>=GetRunInfo()->RUNTRAILER_OBT ){
+		cout << "Bool_t PamLevel2::UpdateRunInfo(Long64_t iev) -- WARNING -- irun "<<irun<<"  has RUNHEADER_OBT>=RUNTRAILER_OBT " <<endl;
+		cout << "                                                            (NB!! in this case some events are assigned to a wrong run)"<<endl;
+	    }
+	};
+	// --------------------------------------
+	// if there was no need to update the run
+	// ---> exit with FALSE
+	// --------------------------------------
+	if ( irun == oldrun ) return(false);
+
+	// --------------------------------------
+	// ... otherwise 
+	// ---> exit with TRUE
+	// --------------------------------------
+	cout << endl << " ))))) UPDATE RUN INFO (((((  @iev "<<iev<<" run "<<GetRunInfo()->ID<<" irun "<<irun<<endl;
+	prevshift = 0;
+	return(true);    
+    };
+    // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
+    // if it is a preselected file (there is SelectionList)
+    // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
+    if(SELLI==1){      
+	sel_tree->GetEntry(iev);
+	if(irun != oldrun){
+	    run_tree->GetEntry(irun);
+	    cout << endl << " ))))) UPDATE RUN INFO (((((  @iev "<<iev<<" run "<<GetRunInfo()->ID<<" irun "<<irun<<endl;
+	    prevshift = 0;
+	    return true;
+	}
+	return false;
+    }
+
+    return false;
+    //
 };
 /**
  * Update the runinfo informations (to be used to have Run infos event by event basis)
  * @param run Pointer to the chain/tree which contains run infos 
  * @return true if a new run has been read, false if it is still the same run
  */
-Bool_t PamLevel2::UpdateRunInfo(TTree *run, ULong64_t iev){
+Bool_t PamLevel2::UpdateRunInfo(TTree *run, Long64_t iev){
   return(UpdateRunInfo((TChain*)run,iev));
 };
 
@@ -1477,25 +2082,31 @@
 void PamLevel2::SetWhichTrees(TString detlist){
 	
     if(detlist.IsNull() || detlist.Contains("+ALL", TString::kIgnoreCase)){
+	CAL0 = false;
 	CAL1 = true;
 	CAL2 = true;
 	TRK2 = true;
 	TRK1 = false;
 	TRKh = false;
+	TRK0 = false;
 	TRG = true;
 	TOF = true;
+	TOF0 = false;
 	S4  = true;
 	ND  = true;
 	AC  = true;
 	ORB = true;
     }else if( detlist.Contains("-ALL", TString::kIgnoreCase) ){
+	CAL0 = false;
 	CAL1 = false;
 	CAL2 = false;
 	TRK2 = false;
 	TRK1 = false;
 	TRKh = false;
+	TRK0 = false;
 	TRG = false;
 	TOF = false;
+	TOF0 = false;
 	S4  = false;
 	ND  = false;
 	AC  = false;
@@ -1507,6 +2118,11 @@
 	if ( detlist.Contains("-CAL1", TString::kIgnoreCase) )CAL1=false;
 	if ( detlist.Contains("+CAL1", TString::kIgnoreCase) )CAL1=true;
     };
+
+    if( detlist.Contains("CAL0", TString::kIgnoreCase) ){
+	if ( detlist.Contains("-CAL0", TString::kIgnoreCase) )CAL0=false;
+	if ( detlist.Contains("+CAL0", TString::kIgnoreCase) )CAL0=true;
+    };
 	
     if( detlist.Contains("CAL2", TString::kIgnoreCase)){
 	if ( detlist.Contains("-CAL2", TString::kIgnoreCase) )CAL2=false;
@@ -1519,6 +2135,11 @@
 	CAL1=false;
     }
 //  -------------------------------------------------------------------------
+    if( detlist.Contains("TRK0", TString::kIgnoreCase) ){
+	if ( detlist.Contains("-TRK0", TString::kIgnoreCase) )TRK0=false;
+	if ( detlist.Contains("+TRK0", TString::kIgnoreCase) )TRK0=true;
+    };
+
     if( detlist.Contains("TRK1", TString::kIgnoreCase) ){
 	if ( detlist.Contains("-TRK1", TString::kIgnoreCase) )TRK1=false;
 	if ( detlist.Contains("+TRK1", TString::kIgnoreCase) )TRK1=true;
@@ -1547,6 +2168,9 @@
     
     if( detlist.Contains("-TOF", TString::kIgnoreCase) )TOF = false;
     else if( detlist.Contains("+TOF", TString::kIgnoreCase) )TOF = true;
+
+    if( detlist.Contains("-TOF0", TString::kIgnoreCase) )TOF0 = false;
+    else if( detlist.Contains("+TOF0", TString::kIgnoreCase) )TOF0 = true;
     
     if( detlist.Contains("-S4",  TString::kIgnoreCase) )S4  = false;
     else if( detlist.Contains("+S4",  TString::kIgnoreCase) )S4  = true;
@@ -1581,7 +2205,10 @@
  * Set tree/branch detector flags from the content of a tree
  */
 void  PamLevel2::GetWhichTrees(TFile* f){
-	
+    
+
+
+    cout << "void  PamLevel2::GetWhichTrees(TFile* f) --- WARNING!! --- ...potrebbe non funzionare "<<endl; 
     // -----------
     // reset flags
     // -----------
@@ -1753,7 +2380,7 @@
     
     Bool_t RUN__ok    = false;
     
-    
+    Bool_t SELLI__ok  = false;
 
     cout << "Checking file: "<<name<<endl;
     TFile *f = new TFile(name.Data());
@@ -1770,6 +2397,7 @@
 
     while( (key = (TKey*)next()) ){
 	
+// 	cout << key->GetName() << endl;
 // 	cout << key->GetName() << ""<<key->GetClassName()<<endl;
 //		cout << " Get tree: " << f->Get(key->GetName())<<endl;
 // 	nev_previous = nev;
@@ -1780,9 +2408,23 @@
 // 	    return false;
 // 	};
 
+
 	if( !strcmp(key->GetName(),"Run"        ) )RUN__ok = true;	
 
 	//=========================================================	
+       	if( !strcmp(key->GetName(),"SelectionList"    ) ){ 
+	    SELLI__ok = true;
+	    if(SELLI==1){
+		Int_t nevt = ((TTree*)f->Get("SelectionList"))->GetEntries();
+		if( nev && nevt!=nev){
+		    cout << "File: "<< f->GetName() <<" discarded ---- SelectionList tree has "<<nevt<<" events instead of "<<nev<< endl; 
+		    return false;
+		}
+		nev=nevt;
+	    }
+	}
+
+	//=========================================================	
        	if( !strcmp(key->GetName(),"Trigger"    ) ){ 
 	    TRG__ok = true;
 	    if(TRG){
@@ -1894,7 +2536,19 @@
 	};	
 
     };
+
+    if( SELLI==-1 )SELLI = (Int_t)SELLI__ok;
+    if( SELLI==0 && SELLI__ok ){
+	cout << "File: "<< f->GetName() <<" discarded ---- found SelectionList (it is not a full-event file)" << endl; 
+	return false;   
+    }
+    if( SELLI==1 && !SELLI__ok ){
+	cout << "File: "<< f->GetName() <<" discarded ---- SelectionList missing" << endl; 
+	return false;
+    }
     
+//    cout << "SELLI "<<SELLI<<endl;
+
 //     cout<< "CheckLevel2File(TString): detector list --> ";
 //     if(TRK1__ok)cout<<"TRK1 ";
 //     if(TRK2__ok)cout<<"TRK2 ";
@@ -2003,11 +2657,11 @@
     cout << "Create clones of PAMELA trees "<<endl;
     
     Int_t i=0;
-    tree_clone[i] = fChain->GetTree()->CloneTree(0);
-    TString name =  tree_clone[i]->GetName();
+    pam_tree_clone[i] = fChain->GetTree()->CloneTree(0);
+    TString name =  pam_tree_clone[i]->GetName();
     name.Append("_clone");
-//    tree_clone[i]->SetName(name.Data());
-    cout << tree_clone[i]->GetName() <<endl;
+//    pam_tree_clone[i]->SetName(name.Data());
+    cout << pam_tree_clone[i]->GetName() <<endl;
     i++;
 
     TList *li = fChain->GetListOfFriends();
@@ -2017,12 +2671,12 @@
     while( (T_friend = (TFriendElement*)next()) ){
 // 	cout<<T_friend->IsA()->GetName()<<" "<<T_friend->GetName()<<hex << T_friend->GetTree() << dec<<endl;
 //	cout<<T_friend->GetTree()->GetName()<< endl;
-	tree_clone[i] = T_friend->GetTree()->CloneTree(0);
-	tree_clone[i]->SetAutoSave(1000000);
-	name =  tree_clone[i]->GetName();
+	pam_tree_clone[i] = T_friend->GetTree()->CloneTree(0);
+	pam_tree_clone[i]->SetAutoSave(1000000);
+	name =  pam_tree_clone[i]->GetName();
 	name.Append("_clone");
-//	tree_clone[i]->SetName(name.Data());
-	cout << tree_clone[i]->GetName() << endl;
+//	pam_tree_clone[i]->SetName(name.Data());
+	cout << pam_tree_clone[i]->GetName() << endl;
 	i++;
     }
     
@@ -2042,21 +2696,45 @@
     cout << "+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+" <<endl;
     cout << "Create new PAMELA trees "<<endl;
         
-    Int_t i=0;
 
+    run_tree_clone = new TTree("Run","PAMELA Level2 data from the GL_RUN table ");
+    run_tree_clone->Branch("RunInfo","GL_RUN",GetPointerTo("RunInfo"));
+    cout << "Run          : branch RunInfo"<<endl;
+    run_tree_clone->Branch("SoftInfo","SoftInfo",GetPointerTo("SoftInfo"));
+    cout << "Run          : branch SoftInfo"<<endl;
+    // ------------------
+    // replicate run tree
+    // ------------------
+    cout << "----------------------------------------------------"<<endl;
+    cout << "irun\t | RUN\t NEVENTS\t absolute time"<<endl;
+    for (Int_t i=0; i<run_tree->GetEntries(); i++){
+	run_tree->GetEntry(i);
+	cout << i<< "\t | "<<GetRunInfo()->ID<<"\t "<<GetRunInfo()->NEVENTS<< "\t "<<GetRunInfo()->RUNHEADER_TIME<<" <---> "<<GetRunInfo()->RUNTRAILER_TIME<<endl;
+	run_tree_clone->Fill();
+    }
+    cout << "----------------------------------------------------"<<endl;
+
+
+    sel_tree_clone = new TTree("SelectionList","List of selected events ");
+    sel_tree_clone->Branch("RunEntry",&irun,"runentry/L");
+    sel_tree_clone->Branch("EventEntry",&irunentry,"eventry/L");
+    
+
+    Int_t i=0;
     if(TRK1||TRK2||TRKh){
-	tree_clone[i] = new TTree("Tracker","PAMELA tracker level2 data ");	
+	pam_tree_clone[i] = new TTree("Tracker","PAMELA tracker level2 data ");	
 	if(TRK1) {
-	    tree_clone[i]->Branch("TrkLevel1","TrkLevel1", GetPointerTo("TrkLevel1"));
-	    tree_clone[i]->BranchRef();
+	    pam_tree_clone[i]->Branch("TrkLevel1","TrkLevel1", GetPointerTo("TrkLevel1"));
+	    pam_tree_clone[i]->BranchRef();
 	    cout << "Tracker      : branch TrkLevel1"<<endl;
+//	    cout << "CreateCloneTrees " << GetTrkLevel1()<<endl;
 	};
 	if(TRK2) {
-	    tree_clone[i]->Branch("TrkLevel2", "TrkLevel2",GetPointerTo("TrkLevel2"));
+	    pam_tree_clone[i]->Branch("TrkLevel2", "TrkLevel2",GetPointerTo("TrkLevel2"));
 	    cout << "Tracker      : branch TrkLevel2"<<endl;	    
 	};
 	if(TRKh) {
-	    tree_clone[i]->Branch("TrkHough","TrkHough", GetPointerTo("TrkHough"));
+	    pam_tree_clone[i]->Branch("TrkHough","TrkHough", GetPointerTo("TrkHough"));
 	    cout << "Tracker      : branch TrkHough"<<endl;
 	};
 	i++;
@@ -2064,13 +2742,13 @@
 
     // Calorimeter
     if(CAL1||CAL2){
-	tree_clone[i] = new TTree("Calorimeter","PAMELA calorimeter level2 data ");	
+	pam_tree_clone[i] = new TTree("Calorimeter","PAMELA calorimeter level2 data ");	
 	if(CAL1) {
-	    tree_clone[i]->Branch("CaloLevel1", "CaloLevel1", GetPointerTo("CaloLevel1"));
+	    pam_tree_clone[i]->Branch("CaloLevel1", "CaloLevel1", GetPointerTo("CaloLevel1"));
 	    cout << "Calorimeter  : branch CaloLevel1"<<endl;
 	};
 	if(CAL2) {
-	    tree_clone[i]->Branch("CaloLevel2","CaloLevel2", GetPointerTo("CaloLevel2"));
+	    pam_tree_clone[i]->Branch("CaloLevel2","CaloLevel2", GetPointerTo("CaloLevel2"));
 	    cout << "Calorimeter  : branch CaloLevel2"<<endl;
 	};
 	i++;
@@ -2078,43 +2756,43 @@
 
     // ToF    
     if(TOF) {
-	tree_clone[i] = new TTree("ToF","PAMELA ToF level2 data ");	
-	tree_clone[i]->Branch("ToFLevel2","ToFLevel2", GetPointerTo("ToFLevel2"));
+	pam_tree_clone[i] = new TTree("ToF","PAMELA ToF level2 data ");	
+	pam_tree_clone[i]->Branch("ToFLevel2","ToFLevel2", GetPointerTo("ToFLevel2"));
 	cout << "ToF          : branch ToFLevel2"<<endl;
 	i++;
     };
     // Trigger
     if(TRG) {
-	tree_clone[i] = new TTree("Trigger","PAMELA trigger level2 data ");	
-	tree_clone[i]->Branch("TrigLevel2","TrigLevel2", GetPointerTo("TrigLevel2"));
+	pam_tree_clone[i] = new TTree("Trigger","PAMELA trigger level2 data ");	
+	pam_tree_clone[i]->Branch("TrigLevel2","TrigLevel2", GetPointerTo("TrigLevel2"));
 	cout << "Trigger      : branch TrigLevel2"<<endl;
 	i++;
     };
     // S4
     if(S4) {
-	tree_clone[i] = new TTree("S4","PAMELA S4 level2 data ");	
-	tree_clone[i]->Branch("S4Level2","S4Level2", GetPointerTo("S4Level2"));
+	pam_tree_clone[i] = new TTree("S4","PAMELA S4 level2 data ");	
+	pam_tree_clone[i]->Branch("S4Level2","S4Level2", GetPointerTo("S4Level2"));
 	cout << "S4           : branch S4Level2"<<endl;
 	i++;
     };
     // Neutron Detector
     if(ND) {
-	tree_clone[i] = new TTree("NeutronD","PAMELA neutron detector level2 data ");	
-	tree_clone[i]->Branch("NDLevel2","NDLevel2", GetPointerTo("NDLevel2"));
+	pam_tree_clone[i] = new TTree("NeutronD","PAMELA neutron detector level2 data ");	
+	pam_tree_clone[i]->Branch("NDLevel2","NDLevel2", GetPointerTo("NDLevel2"));
 	cout << "NeutronD     : branch NDLevel2"<<endl;
 	i++;
     };
     // Anticounters
     if(AC) {
-	tree_clone[i] = new TTree("Anticounter","PAMELA anticounter detector level2 data ");	
-	tree_clone[i]->Branch("AcLevel2","AcLevel2", GetPointerTo("AcLevel2"));
+	pam_tree_clone[i] = new TTree("Anticounter","PAMELA anticounter detector level2 data ");	
+	pam_tree_clone[i]->Branch("AcLevel2","AcLevel2", GetPointerTo("AcLevel2"));
 	cout << "Anticounter  : branch AcLevel2"<<endl;
 	i++;
     };
     // OrbitalInfo
     if(ORB) {
-	tree_clone[i] = new TTree("OrbitalInfo","PAMELA oribital info  ");	
-	tree_clone[i]->Branch("OrbitalInfo","OrbitalInfo", GetPointerTo("OrbitalInfo"));
+	pam_tree_clone[i] = new TTree("OrbitalInfo","PAMELA oribital info  ");	
+	pam_tree_clone[i]->Branch("OrbitalInfo","OrbitalInfo", GetPointerTo("OrbitalInfo"));
 	cout << "OrbitalInfo  : branch OrbitalInfo"<<endl;
 	i++;
     };
@@ -2129,31 +2807,47 @@
  */
 //void PamLevel2::FillNewPamTree(TTree *T){
 void PamLevel2::FillCloneTrees(){
-        
-    for(Int_t i=0; i<8; i++){
-	if(tree_clone[i])tree_clone[i]->Fill();
+    
+//    cout << "PamLevel2::FillCloneTrees()" << irunentry << endl;
+
+    for(Int_t i=0; i<NCLONES; i++){
+	if(pam_tree_clone[i])pam_tree_clone[i]->Fill();
     }
+    if(sel_tree_clone)sel_tree_clone->Fill();    
+
 }
 
 
 TTree* PamLevel2::GetCloneTree(TString name){
 
-    for(Int_t i=0; i<8; i++){	
-	if(tree_clone[i]){
-	    TString na = tree_clone[i]->GetName();
-	    if(!name.CompareTo(na))return tree_clone[i];
+    for(Int_t i=0; i<NCLONES; i++){	
+	if(pam_tree_clone[i]){
+	    TString na = pam_tree_clone[i]->GetName();
+	    if(!name.CompareTo(na))return pam_tree_clone[i];
 	};
     }
+    if(run_tree_clone){
+	TString na = run_tree_clone->GetName();
+	if(!name.CompareTo(na))return run_tree_clone;
+    }
+    if(sel_tree_clone){
+	TString na = sel_tree_clone->GetName();
+	if(!name.CompareTo(na))return sel_tree_clone;
+    }
     return NULL;
 
 }
 void PamLevel2::WriteCloneTrees(){
     cout << "+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+" <<endl;
     cout << "Write clones of PAMELA trees "<<endl;
-    for(Int_t i=0; i<8; i++){	
-	if(tree_clone[i]){
-	    cout << tree_clone[i]->GetName()<<endl;
-	    tree_clone[i]->Write();
+    cout << run_tree_clone->GetName()<<endl;    
+    run_tree_clone->Write();
+    cout << sel_tree_clone->GetName()<<endl;    
+    sel_tree_clone->Write();
+    for(Int_t i=0; i<NCLONES; i++){	
+	if(pam_tree_clone[i]){
+	    cout << pam_tree_clone[i]->GetName()<<endl;
+	    pam_tree_clone[i]->Write();
 	};
     }
     cout << "+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+" <<endl;
@@ -2161,160 +2855,273 @@
 }
 
 /**
- * Create a new (empty) Pamela trees 
+ * Method to get level2-trees entry, the corresponding run entry and (if required) the level0 entry.
  */
-// TTree* PamLevel2::GetNewPamTree(){
+//Int_t PamLevel2::GetEntry(Int_t iee){
+Int_t PamLevel2::GetEntry(Long64_t iee){
+    
+    if(!pam_tree){
+	cout << " Int_t PamLevel2::GetEntry(Int_t) -- ERROR -- level2 trees not loaded"<<endl;
+	return 0;
+    }
 
-//     if(tree_clone)return tree_clone;
 
-//     TTree *Tout = 0;
-    
-//     cout << "+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+" <<endl;
-//     cout << "Create new PAMELA trees "<<endl;
+    //
+    // This is a sort of bug: if you don't have the run tree you don't want to exit here you want to have loaded the event anyway...
+    //
+    //    if(!run_tree ){
+    //	cout << " Int_t PamLevel2::GetEntry(Int_t) -- ERROR -- run tree not loeaded"<<endl;
+    //	return 0;
+    //    }
+
+    Long64_t ii=0;
+    //-------------------------------
+    ii = iee;
+    if( !pam_tree->GetEntry(ii) ){	
+	cout << " Int_t PamLevel2::GetEntry(Int_t) -- ERROR -- error reading pam tree"<<endl;
+	return 0;
+    }
+    //
+    // ... that's way I put it here. Notice that nothing change in the code (is backward compatible) since in any case you return with 0. 
+    // in theory one would like to return 1 if run is not loaded but now I don't have the will to add that 2 lines of code and it is not
+    // a problem if you don't check the return code of getentry.
+    //
+    if(!run_tree ){
+	if ( TRK0 || CAL0 || TOF0 || RUN ) { //forse cosi` va bene per tornare 1?
+	    cout << " Int_t PamLevel2::GetEntry(Int_t) -- ERROR -- run tree not loaded"<<endl;
+	    return 0;
+	}  else {
+	    return 1; //cosi` se non c'e` run esce qua...
+	}
+    }
+
+    //-------------------------------
+    ii = iee;
+//    Bool_t UPDATED = UpdateRunInfo(run_tree,ii);
+//    Bool_t UPDATED = UpdateRunInfo(ii);
+    UpdateRunInfo(ii);
+    if(SELLI==0)irunentry = iee-runfirstentry;
+//    if(UPDATED && run_tree_clone)run_tree_clone->Fill();
+   
+//    cout << "PamLevel2::GetEntry("<<iee<<") "<<irun<<" "<<runfirstentry<<" "<<irunentry<<endl;
+
+//    cout << " irunentry "<<irunentry << endl;
+
+    if( TRK0 || CAL0 || TOF0 ){
+	if( !GetYodaEntry( ) ){
+	    cout << " Int_t PamLevel2::GetEntry(Int_t) -- ERROR -- error reading level0 tree"<<endl;
+	    return 0;
+	}
+    }
+    return 1;
+
+}
+
+/**
+ * Method to retrieve the level0 tree (YODA tree) that contains the current event.
+ * Given the run ID (...), if needed it query the DB and load the proper file.
+ * @return Pointer to the tree
+ */
+
+
+TTree* PamLevel2::GetYodaTree( ){
+    
+//    cout << "TTree* PamLevel2::GetYodaTree( )"<<endl;
+    //===================================
+    // check if iroot has changed
+    //===================================
+    if( irun<0 ){
+	cout << "PamLevel2::GetYodaTree() -- ERROR -- irun = "<<irun<<endl;
+//	cout << "In order to use this method you have to first load the RunInfo tree "<<endl;
+	return NULL;
+    }    
+    Int_t irootnew = run_obj->ID_ROOT_L0;
+//     cout << "iroot    "<<iroot<<endl;
+//     cout << "irootnew "<<irootnew<<endl;
+
+    //===================================
+    // load the level0 file
+    // (if not already loaded)
+    //===================================
+    if( iroot != irootnew || !l0_tree){
+	iroot = irootnew;
+	//===================================
+	// open the DB connection
+	// (if not already opened)
+	//===================================
+	if(!dbc || (dbc && !dbc->IsConnected())){
+	    cout<<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"<<endl; 
+	    cout<<"Connecting to DB"<<endl;
+	    cout<<"HOST "<<host<<endl;
+	    cout<<"USER "<<user<<endl;
+	    cout<<"PSW  "<<psw<<endl;
+	    dbc = TSQLServer::Connect(host.Data(),user.Data(),psw.Data());
+	    if( !dbc )return NULL;
+	    if( !dbc->IsConnected() )return NULL;    
+//	    cout<<"...done"<<endl;
+	    cout<<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"<<endl; 
+	}else{
+//	    cout<<"DB already connected"<<endl;
+	}
+	GL_ROOT glroot = GL_ROOT();
+	if( glroot.Query_GL_ROOT(iroot,dbc) ){
+	    cout << "TTree* PamLevel2::GetYodaTree( ) -- ERROR -- level0 file iroot = "<<iroot<< " does not exists"<<endl;
+	    return NULL;
+	};
+	TString filename = glroot.PATH + glroot.NAME;
+	if(l0_file){ 
+	    l0_file->Close();
+	    l0_file->Delete();
+	}
+	cout << "Opening LEVEL0 file: "<< filename << endl;
+	FileStat_t t;
+	if( gSystem->GetPathInfo(filename.Data(),t) ){
+	    cout << " PamLevel2::GetYodaTree() -- ERROR opening file "<<endl;
+	    return NULL;
+	}
+	l0_file = new TFile(filename);
+	if( !l0_file )return NULL;
+	l0_tree = (TTree*)l0_file->Get("Physics");
+	if(!h0_obj)h0_obj = new EventHeader();
+	l0_tree->SetBranchAddress("Header" ,&h0_obj);
+	prevshift = 0;
+	//---------------------------------------------------
+	// TRACKER:
+	if(TRK0){
+	    if(!trk0_obj){
+		trk0_obj = new TrkLevel0();
+		trk0_obj->Set();
+	    };
+	    l0_tree->SetBranchAddress("Tracker" ,trk0_obj->GetPointerToTrackerEvent());
+	}
+	//---------------------------------------------------
+	// CALORIMETER:
+	if(CAL0){
+	    if(!calo0_obj){
+		calo0_obj = new CaloLevel0();
+		calo0_obj->Set();
+	    };
+	    l0_tree->SetBranchAddress("Calorimeter" ,calo0_obj->GetPointerToCalorimeterEvent());
+	    //	    cout << "PamLevel2::GetYodaTree() --- level0 calorimeter not implemented "<<endl;
+	}
+	//---------------------------------------------------
+	// TOF:
+	if(TOF0){
+	    cout << "PamLevel2::GetYodaTree() --- level0 TOF not implemented "<<endl;
+	}
+
+    };
+
+    if(!dbc || (dbc && !dbc->IsConnected())){
+	cout << " TTree* PamLevel2::GetYodaTree( ) -- no DB connected... hai fatto qualche cazzata "<<endl;
+    }
+
+    if ( TRK0 ){
+	TrkParams::Load(6);
+	if( !TrkParams::IsLoaded(6) ){
+	    cout << " TTree* PamLevel2::GetYodaTree( ) -- WARNING -- VK-mask not loaded"<<endl;
+	};
+	TrkParams::SetCalib(run_obj,dbc);
+	TrkParams::LoadCalib( );
+	if( !TrkParams::CalibIsLoaded() ){
+	    cout << " TTree* PamLevel2::GetYodaTree( ) -- WARNING -- Calibration not loaded"<<endl;
+	};
+    }
+
+//    cout << l0_tree << endl;
     
+    return l0_tree;
+
+}
+
+/**
+ * Method to retrieve the level0 tree (YODA tree) that contains the current event.
+ */
+Int_t PamLevel2::GetYodaEntry(){
+
+//    cout << "Int_t PamLevel2::GetYodaEntry()"<<endl;
+    if(!GetYodaTree())return 0;
     
-//     if(TRK1||TRK2||TRKh){
-// 	TTree *T = new TTree("Tracker_clone","PAMELA tracker level2 data ");	
-// 	if(TRK1) {
-// 	    trk1_clone = new TrkLevel1();
-// 	    T->Branch("TrkLevel1","TrkLevel1", &trk1_clone);
-// 	    T->BranchRef();
-// 	    cout << "Tracker      : branch TrkLevel1"<<endl;
-// 	};
-// 	if(TRK2) {
-// 	    trk2_clone = new TrkLevel2();
-// 	    T->Branch("TrkLevel2", "TrkLevel2",&trk2_clone);
-// 	    cout << "Tracker      : branch TrkLevel2"<<endl;	    
-// 	};
-// 	if(TRKh) {
-// 	    trkh_clone = new TrkHough();
-// 	    T->Branch("TrkHough","TrkHough", &trkh_clone);
-// 	    cout << "Tracker      : branch TrkHough"<<endl;
-// 	};
-// 	if(!Tout)Tout=T;
-// 	else Tout->AddFriend("Tracker_clone");
-//     }
-
-//     // Calorimeter
-//     if(CAL1||CAL2){
-// 	TTree *C = new TTree("Calorimeter_clone","PAMELA calorimeter level2 data ");	
-// 	if(CAL1) {
-// 	    calo1_clone = new CaloLevel1();
-// 	    C->Branch("CaloLevel1", "CaloLevel1", &calo1_clone);
-// 	    cout << "Calorimeter  : branch CaloLevel1"<<endl;
-// 	};
-// 	if(CAL2) {
-// 	    calo2_clone = new CaloLevel2();
-// 	    C->Branch("CaloLevel2","CaloLevel2", &calo2_clone);
-// 	    cout << "Calorimeter  : branch CaloLevel2"<<endl;
-// 	};
-// 	if(!Tout)Tout=C;
-// 	else Tout->AddFriend("Calorimeter_clone");
-//     }    
-
-//     // ToF    
-//     if(TOF) {
-// 	TTree *O = new TTree("ToF_clone","PAMELA ToF level2 data ");	
-// 	tof_clone = new ToFLevel2();
-// 	O->Branch("ToFLevel2","ToFLevel2", &tof_clone);
-// 	cout << "ToF          : branch ToFLevel2"<<endl;
-// 	if(!Tout)Tout=O;
-// 	else Tout->AddFriend("ToF_clone");
-//     };
-//     // Trigger
-//     if(TRG) {
-// 	TTree *R = new TTree("Trigger_clone","PAMELA trigger level2 data ");	
-// 	trig_clone = new TrigLevel2();
-// 	R->Branch("TrigLevel2","TrigLevel2", &trig_clone);
-// 	cout << "Trigger      : branch TrigLevel2"<<endl;
-// 	if(!Tout)Tout=R;
-// 	else Tout->AddFriend("Trigger_clone");
-//     };
-//     // S4
-//     if(S4) {
-// 	TTree *S = new TTree("S4_clone","PAMELA S4 level2 data ");	
-// 	s4_clone = new S4Level2();
-// 	S->Branch("S4Level2","S4Level2", &s4_clone);
-// 	cout << "S4           : branch S4Level2"<<endl;
-// 	if(!Tout)Tout=S;
-// 	else Tout->AddFriend("S4_clone");
-//     };
-//     // Neutron Detector
-//     if(ND) {
-// 	TTree *N = new TTree("NeutronD_clone","PAMELA neutron detector level2 data ");	
-// 	nd_clone = new NDLevel2();
-// 	N->Branch("NDLevel2","NDLevel2", &nd_clone);
-// 	cout << "NeutronD     : branch NDLevel2"<<endl;
-// 	if(!Tout)Tout=N;
-// 	else Tout->AddFriend("NeutronD_clone");
-//     };
-//     // Anticounters
-//     if(AC) {
-// 	TTree *A = new TTree("Anticounter_clone","PAMELA anticounter detector level2 data ");	
-// 	ac_clone = new AcLevel2();
-// 	A->Branch("AcLevel2","AcLevel2", &ac_clone);
-// 	cout << "Anticounter  : branch AcLevel2"<<endl;
-// 	if(!Tout)Tout=A;
-// 	else Tout->AddFriend("Anticounter_clone");
-//     };
-//     // OrbitalInfo
-//     if(ORB) {
-// 	TTree *B = new TTree("OrbitalInfo_clone","PAMELA oribital info  ");	
-// 	orb_clone = new OrbitalInfo();
-// 	B->Branch("OrbitalInfo","OrbitalInfo", &orb_clone);
-// 	cout << "OrbitalInfo  : branch OrbitalInfo"<<endl;
-// 	if(!Tout)Tout=B;
-// 	else Tout->AddFriend("OrbitalInfo_clone");
-//     };
-//     cout << "+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+" <<endl;
+    // patch
+    if( irunentry < 0){
+//	cout << "Int_t PamLevel2::GetYodaEntry() -- ATTENZIONE -- irunentry negativo?!?! "<<(Int_t)irunentry<<endl;
+	irunentry=0LL;
+    }
+    //  ---------------------------------
+    //  if file is NOT a preselected file
+    //  ---------------------------------
+    Long64_t quellagiusta = irunentry + (Long64_t)(run_obj->EV_FROM);
+//     cout << " irunentry "<<irunentry<<endl;
+//     cout << " EV_FROM "<<run_obj->EV_FROM<<endl;
+//     cout << " quellagiusta = irunentry + EV_FROM "<< quellagiusta << endl;
+
+//     cout << " irun "<< irun << " irunentry "<< irunentry<<" run_obj->EV_FROM "<<run_obj->EV_FROM <<" quella giusta "<<quellagiusta << endl;
+//     cout << " iroot "<<iroot<<" run_obj->ID_ROOT_L0 "<<run_obj->ID_ROOT_L0<<endl;
+//     cout << " time "<< GetOrbitalInfo()->absTime << endl;
+//     cout << " trk_calib_used "<<run_obj->TRK_CALIB_USED<< endl;
+    
+    if( !GetOrbitalInfo() ){
+	cout << "Int_t PamLevel2::GetYodaEntry() -- ERROR -- missing OrbitalInfo "<<endl;
+	return 0;
+    }
+    if( GetOrbitalInfo()->OBT==0 && GetOrbitalInfo()->pkt_num==0 ){
+	cout << "Int_t PamLevel2::GetYodaEntry() -- ERROR -- level2 event corrupted ?? "<<endl;	
+	return 0;
+    }
 
-//     tree_clone = Tout;
-//     tree_clone->SetDirectory(0);
+    // ---------------------------------------------------------------------
+    // ATTENTION!!!
+    // If data are not pre-processed with cleaner, the level0 tree may contain
+    // spurious nested physics packets.
+    // The GL_RUN variables EV_FROM, EV_TO and NEVENTS counts also these entries
+    // while level2 tree DOES NOT!!
+    // This means that "quellagiusta" in these cases is not correct.
+    // In order to retrieve the correct level0 event, I implemented a check
+    // of the OBT and pkt-number. In case of mismatch, the level0 entry number
+    // is shift forward until when the packets match.
+    // ---------------------------------------------------------------------
+    Int_t answer = 0;
+    Int_t shift =0;
+    //    printf(" siamo qui %i %i \n",shift,prevshift);
+    Int_t maxshift = 100;
+    do{
+	if(shift>0){	 
+	    cout << " PKTNUM  L2 --- "<< GetOrbitalInfo()->pkt_num << " --- L0 --- "<< GetEventHeader()->GetPscuHeader()->GetCounter()<<endl;
+	    cout << "         RUN: ID "<< GetRunInfo()->ID << " ID_ROOT_L0 "<<run_obj->ID_ROOT_L0<<" ID_RUN_FRAG "<<GetRunInfo()->ID_RUN_FRAG << " EV_FROM "<<GetRunInfo()->EV_FROM  <<endl;
+	    cout << "         L2 <--> L0 mismatch ( irun "<<irun<<" irunentry "<<irunentry<<" shift "<<shift<<" prevshift "<<prevshift<<" )"<<endl;
+	}
+	answer = l0_tree->GetEntry(quellagiusta+(Long64_t)shift+(Long64_t)prevshift);
+	shift++;
+	if( !GetEventHeader() ){
+	    cout << "Int_t PamLevel2::GetYodaEntry() -- ERROR -- missing EventHeader "<<endl;
+	    return 0;
+	}
+//	cout << "PKTNUM "<<shift<<" ==  L2 --- "<< GetOrbitalInfo()->pkt_num << " --- L0 --- "<< GetEventHeader()->GetPscuHeader()->GetCounter()<<endl;
+//	cout << " L2 --- "<< GetOrbitalInfo()->OBT << " --- L0 --- "<< GetEventHeader()->GetPscuHeader()->GetOrbitalTime()<<endl;
+// 	if( (quellagiusta+shift) == l0_tree->GetEntries()+1 )cout << ">>> end of level0 tree <<<"<<endl; 
+// 	cout << " GetOrbitalInfo()->OBT "<< GetOrbitalInfo()->OBT << endl;
+// 	cout << " GetEventHeader()->GetPscuHeader()->GetOrbitalTime() "<< GetEventHeader()->GetPscuHeader()->GetOrbitalTime() << endl;
+// 	cout << " GetOrbitalInfo()->pkt_num "<< GetOrbitalInfo()->pkt_num << endl;
+// 	cout << " GetEventHeader()->GetPscuHeader()->GetCounter() "<< GetEventHeader()->GetPscuHeader()->GetCounter() << endl;
+//	printf(" IDRUN %u \n",GetRunInfo()->ID);
+//
+	if ( prevshift != 0 && (quellagiusta+(Long64_t)shift) == GetYodaTree()->GetEntries() ){
+	  prevshift = 0;
+	  shift = -1;
+	};
 
-//     return Tout;
-// }
-// /**
-//  * Fill a tree (created with GetNewPamTree)
-//  *
-//  */
-// //void PamLevel2::FillNewPamTree(TTree *T){
-// void PamLevel2::FillNewPamTree(){
-        
+    }while( ( GetOrbitalInfo()->OBT != (UInt_t)(GetEventHeader()->GetPscuHeader()->GetOrbitalTime()) || GetOrbitalInfo()->pkt_num != (UInt_t)(GetEventHeader()->GetPscuHeader()->GetCounter())) && (quellagiusta+(Long64_t)shift) < GetYodaTree()->GetEntries() && shift < maxshift);
+
+    if ( (quellagiusta+(Long64_t)shift) == GetYodaTree()->GetEntries() || shift == maxshift ) {
+	cout << " Big trouble here, no such event in Level0 data! " <<endl;
+	return 0;
+    }
+//    cout << "LA ENTRY GIUSTA E`: "<<quellagiusta<<" (spero...)"<<endl;
+//    return GetYodaTree()->GetEntry(quellagiusta);
+    if ( shift > 1 ) prevshift += (shift-1);
+    
+    return answer;
+    
+}
 
-//     if(trk1_clone)  *trk1_clone = *trk1_obj;
-//     if(trk2_clone){
-// 	trk2_clone->Clear();
-// 	trk2_obj->Copy(*trk2_clone);
-// //	*trk2_clone = *trk2_obj;
-//     }
-//     if(trkh_clone)  *trkh_clone = *trkh_obj;
-//     if(calo1_clone){
-// //	*calo1_clone = *calo1_obj;
-// 	calo1_clone->Clear();
-// 	calo1_obj->Copy(*calo1_clone);
-//     }
-//     if(calo2_clone){
-// //	*calo2_clone = *calo2_obj;
-// 	calo2_clone->Clear();
-// 	calo2_obj->Copy(*calo2_clone);
-//     }
-//     if(tof_clone)   *tof_clone  = *tof_obj;
-//     if(trig_clone)  *trig_clone = *trig_obj;
-//     if(s4_clone)    *s4_clone   = *s4_obj;
-//     if(nd_clone)    *nd_clone   = *nd_obj;
-//     if(ac_clone)    *ac_clone   = *ac_obj;
-//     if(orb_clone)   *orb_clone  = *orb_obj;
-
-//     TTree *T = tree_clone;
-
-//     T->Fill(); //fill main tree
-// //    cout<<T->IsA()->GetName()<<" "<<T->GetName()<<endl;
-//     TList *li = T->GetListOfFriends();
-//     TIter next(li);
-//     TFriendElement* T_friend=0;
-//     while( (T_friend = (TFriendElement*)next()) ){
-// // 	cout<<T_friend->IsA()->GetName()<<" "<<T_friend->GetName()<<hex << T_friend->GetTree() << dec<<endl;
-//  	T_friend->GetTree()->Fill();//fill friends
-//     }
 
-// }