ITS/AliITSPid.cxx

   1 #include "AliITSPid.h"
   2 #include "TMath.h"
   3 #include "AliITSIOTrack.h"
   4 #include <iostream.h>
   5 ClassImp(AliITSPid)
   6
   7 //-----------------------------------------------------------
   8 Float_t AliITSPid::qcorr(Float_t xc)
   9 {
  10     assert(0);
  11   Float_t fcorr;
  12   fcorr=( 0.766 +0.9692*xc -1.267*xc*xc )*( 1.-TMath::Exp(-xc*64.75) );
  13   if(fcorr<=0.1)fcorr=0.1;
  14 return qtot/fcorr;
  15 }
  16 //-----------------------------------------------------------
  17 //PH #include "vector.h"
  18 #include <vector>
  19 #include <algorithm>
  20 Float_t AliITSPid::qtrm(Int_t track)
  21 {
  22     TVector q(*( this->GetVec(track)  ));
  23     Int_t nl=(Int_t)q(0);
  24     if(nl<1)return 0.;
  25     vector<float> vf(nl);
  26     switch(nl){
  27       case  1:q(6)=q(1); break;
  28       case  2:q(6)=(q(1)+q(2))/2.; break;
  29       default:
  30         for(Int_t i=0;i<nl;i++){vf[i]=q(i+1);}
  31         sort(vf.begin(),vf.end());
  32         q(6)= (vf[0]+vf[1])/2.;
  33         break;
  34     }
  35     for(Int_t i=0;i<nl;i++){q(i+1)=vf[i];} this->SetVec(track,q);
  36     return (q(6));
  37 }
  38 //........................................................
  39 Float_t AliITSPid::qtrm(Float_t qarr[6],Int_t narr)
  40 {
  41   Float_t q[6],qm;
  42   Int_t nl,ml;
  43   narr>6?ml=6:ml=narr;
  44   nl=0; for(Int_t i=0;i<ml;i++){if(qarr[i]>0.){q[i]=qarr[i];nl++;}}
  45   if(nl==0)return 0.;
  46     vector<float> vf(nl);
  47     switch(nl){
  48       case  1:qm=q[0]; break;
  49       case  2:qm=(q[0]+q[1])/2.; break;
  50       default:
  51         for(Int_t i=0;i<nl;i++){vf[i]=q[i];}
  52         sort(vf.begin(),vf.end());
  53         qm= (vf[0]+vf[1])/2.;
  54         break;
  55     }
  56     return qm;
  57 }
  58 //-----------------------------------------------------------
  59 //inline
  60 Int_t   AliITSPid::wpik(Int_t nc,Float_t q)
  61 {
  62        return pion();
  63
  64     Float_t qmpi,qmk,sigpi,sigk,dpi,dk,ppi,pk;
  65     qmpi =cut[nc][1];
  66     sigpi=cut[nc][2];
  67     qmk  =cut[nc][3];
  68     sigk =cut[nc][4];
  69     Float_t dqpi=(q-qmpi)/sigpi;
  70     Float_t dqk =(q-qmk )/sigk;
  71     if( dqk<-1. )return pion();
  72     dpi =TMath::Abs(dqpi);
  73     dk  =TMath::Abs(dqk);
  74     ppi =1.- TMath::Erf(dpi);  // +0.5;
  75     pk  =1.- TMath::Erf(dk);   // +0.5;
  76     Float_t rpik=ppi/(pk+0.0000001);
  77         cout<<"q,dqpi,dqk, wpik: ppi,pk,rpik="
  78         <<q<<" "<<dqpi<<" "<<dqk<<" "<<ppi<<" "<<pk<<" "<<rpik<<endl;
  79     if( rpik>=1000. ){return pion();}
  80     if( rpik>0.001 ){fWk=1./(rpik+1.); fWpi=1.-fWk;return 0;}
  81     return pion();
  82 }
  83 //-----------------------------------------------------------
  84 //inline
  85 Int_t   AliITSPid::wpikp(Int_t nc,Float_t q)
  86 {
  87        return pion();
  88
  89    Float_t qmpi,qmk,qmp,sigpi,sigk,sigp,ppi,pka,ppr,rppi,rpka;
  90
  91     qmpi =cut[nc][1];
  92     sigpi=cut[nc][2];
  93     qmk  =cut[nc][3];
  94     sigk =cut[nc][4];
  95     qmp  =cut[nc][5];
  96     sigp =cut[nc][6];
  97
  98     ppi =TMath::Erf( TMath::Abs((q-qmpi)/sigpi) )+0.5;
  99     pka =TMath::Erf( TMath::Abs((q-qmk )/sigk)  )+0.5;
 100     ppr =TMath::Erf( TMath::Abs((q-qmp )/sigp)  )+0.5;
 101
 102     rppi=ppr/ppi;
 103     rpka=ppr/pka;
 104     Float_t rp;
 105     if( rppi>rpka )  { rp=rpka; }
 106                  else{ rp=rppi; }
 107     if( rp>=1000. ){ return proton(); }
 108     if( rp>0.001  ){ fWp=rp/(rp+1.);return proton(); }
 109
 110     return 0;
 111 }
 112 //-----------------------------------------------------------
 113 Int_t   AliITSPid::GetPcode(TClonesArray* rps,Float_t pm)
 114 {
 115     return 0;
 116 }
 117 //-----------------------------------------------------------
 118 Int_t   AliITSPid::GetPcode(AliTPCtrack *track)
 119 {
 120       Double_t xk,par[5]; track->GetExternalParameters(xk,par);
 121       Float_t phi=TMath::ASin(par[2]) + track->GetAlpha();
 122       if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
 123       if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
 124       Float_t lam=TMath::ATan(par[3]);
 125       Float_t pt_1=TMath::Abs(par[4]);
 126       Float_t mom=1./(pt_1*TMath::Cos(lam));
 127       Float_t dedx=track->GetdEdx();
 128     Int_t pcode=GetPcode(dedx/40.,mom);
 129     cout<<"TPCtrack dedx,mom,pcode="<<dedx<<","<<mom<<","<<pcode<<endl;
 130     return pcode?pcode:211;
 131     }
 132 //------------------------------------------------------------
 133 /*
 134 Int_t   AliITSPid::GetPcode(AliITSIOTrack *track)
 135 {
 136     Double_t px,py,pz;
 137     px=track->GetPx();
 138     py=track->GetPy();
 139     pz=track->GetPz();
 140     Float_t mom=TMath::Sqrt(px*px+py*py+pz*pz);
 141 //???????????????????
 142    // Float_t dedx=1.0;
 143      Float_t dedx=track->GetdEdx();
 144 //???????????????????
 145     Int_t pcode=GetPcode(dedx,mom);
 146     cout<<"ITSV1 dedx,mom,pcode="<<dedx<<","<<mom<<","<<pcode<<endl;
 147 return pcode?pcode:211;
 148 }
 149 */
 150 //-----------------------------------------------------------
 151 Int_t   AliITSPid::GetPcode(AliITStrackV2 *track)
 152 {
 153   if(track==0)return 0;
 154   //track->Propagate(track->GetAlpha(),3.,0.1/65.19*1.848,0.1*1.848);
 155       track->PropagateTo(3.,0.0028,65.19);
 156
 157       track->PropagateToVertex();
 158     Double_t xk,par[5]; track->GetExternalParameters(xk,par);
 159     Float_t lam=TMath::ATan(par[3]);
 160     Float_t pt_1=TMath::Abs(par[4]);
 161     Float_t mom=0.;
 162     if( (pt_1*TMath::Cos(lam))!=0. ){ mom=1./(pt_1*TMath::Cos(lam)); }else{mom=0.;};
 163     Float_t dedx=track->GetdEdx();
 164     //cout<<"lam,pt_1,mom,dedx="<<lam<<","<<pt_1<<","<<mom<<","<<dedx<<endl;
 165     Int_t pcode=GetPcode(dedx,mom);
 166     //cout<<"ITS V2 dedx,mom,pcode="<<dedx<<","<<mom<<","<<pcode<<endl;
 167 return pcode?pcode:211;
 168 }
 169 //-----------------------------------------------------------
 170 Int_t   AliITSPid::GetPcode(Float_t q,Float_t pm)
 171 {
 172     fWpi=fWk=fWp=-1.;     fPcode=0;
 173 //1)
 174     if ( pm<=cut[1][0] )
 175         { return pion(); }
 176 //2)
 177     if ( pm<=cut[2][0] )
 178         { if( q<cut[2][2] ){ return pion(); } else { return  kaon();} }
 179 //3)
 180     if ( pm<=cut[3][0] )
 181         if( q<cut[3][2])
 182                 { return pion(); }
 183              else
 184                 { if ( q<=cut[3][5] ) {return kaon();} else {return proton();}}
 185 //4)
 186     if ( pm<=cut[4][0] )
 187         if( q<cut[4][2] )
 188                 { return pion(); }
 189             else
 190                 { if( q<=cut[4][4] ) {return kaon();} else {return proton(); }}
 191 //5)
 192     if ( pm<=cut[5][0] )
 193         if ( q>cut[5][5] ) {return proton();} else {return wpik(5,q);};
 194 //6)
 195     if ( pm<=cut[6][0] )
 196         if ( q>cut[6][5] ) {return proton();} else {return wpik(6,q);};
 197 //7)
 198     if ( pm<=cut[7][0] )
 199         if ( q<=cut[7][5] ) {return fPcode;} else {return proton();};
 200 //8)
 201     if ( pm<=cut[8][0] )
 202         if ( q<=cut[8][5] ) {return fPcode;} else {return proton();};
 203 //9)
 204     if ( pm<=cut[9][0] )
 205         if ( q<=cut[9][5] ) {return fPcode;} else {return proton();};
 206 //10)
 207     if( pm<=cut[10][0] ){ return wpikp(10,q); }
 208 //11)
 209     if( pm<=cut[11][0] ){ return wpikp(11,q); }
 210 //12)
 211     if( pm<=cut[12][0] ){ return wpikp(12,q); }
 212
 213     return fPcode;
 214 }
 215 //-----------------------------------------------------------
 216 void    AliITSPid::SetCut(Int_t n,Float_t pm,Float_t pilo,Float_t pihi,
 217                         Float_t klo,Float_t khi,Float_t plo,Float_t phi)
 218 {
 219     cut[n][0]=pm;
 220     cut[n][1]=pilo;
 221     cut[n][2]=pihi;
 222     cut[n][3]=klo;
 223     cut[n][4]=khi;
 224     cut[n][5]=plo;
 225     cut[n][6]=phi;
 226     return ;
 227 }
 228 //-----------------------------------------------------------
 229 void AliITSPid::SetVec(Int_t ntrack,TVector info)
 230 {
 231 TClonesArray& arr=*trs;
 232     new( arr[ntrack] ) TVector(info);
 233 }
 234 //-----------------------------------------------------------
 235 TVector* AliITSPid::GetVec(Int_t ntrack)
 236 {
 237 TClonesArray& arr=*trs;
 238     return (TVector*)arr[ntrack];
 239 }
 240 //-----------------------------------------------------------
 241 void AliITSPid::SetEdep(Int_t track,Float_t Edep)
 242 {
 243     TVector xx(0,11);
 244     if( ((TVector*)trs->At(track))->IsValid() )
 245         {TVector yy( *((TVector*)trs->At(track)) );xx=yy; }
 246     Int_t j=(Int_t)xx(0); if(j>4)return;
 247     xx(++j)=Edep;xx(0)=j;
 248     TClonesArray &arr=*trs;
 249     new(arr[track])TVector(xx);
 250 }
 251 //-----------------------------------------------------------
 252 void AliITSPid::SetPmom(Int_t track,Float_t Pmom)
 253 {
 254     TVector xx(0,11);
 255     if( ((TVector*)trs->At(track))->IsValid() )
 256         {TVector yy( *((TVector*)trs->At(track)) );xx=yy; }
 257     xx(10)=Pmom;
 258     TClonesArray &arr=*trs;
 259     new(arr[track])TVector(xx);
 260 }
 261 //-----------------------------------------------------------
 262 void AliITSPid::SetPcod(Int_t track,Int_t partcode)
 263 {
 264     TVector xx(0,11);
 265     if( ((TVector*)trs->At(track))->IsValid() )
 266         {TVector yy( *((TVector*)trs->At(track)) );xx=yy; }
 267     if(xx(11)==0)
 268         {xx(11)=partcode; mxtrs++;
 269         TClonesArray &arr=*trs;
 270         new(arr[track])TVector(xx);
 271         }
 272 }
 273 //-----------------------------------------------------------
 274 void AliITSPid::Print(Int_t track)
 275 {cout<<mxtrs<<" tracks in AliITSPid obj."<<endl;
 276     if( ((TVector*)trs->At(track))->IsValid() )
 277         {TVector xx( *((TVector*)trs->At(track)) );
 278          xx.Print();
 279          }
 280     else
 281         {cout<<"No data for track "<<track<<endl;return;}
 282 }
 283 //-----------------------------------------------------------
 284 void AliITSPid::Tab(void)
 285 {
 286 if(trs->GetEntries()==0){cout<<"No entries in TAB"<<endl;return;}
 287 cout<<"------------------------------------------------------------------------"<<endl;
 288 cout<<"Nq"<<"   q1  "<<"   q2  "<<"   q3  "<<"   q4  "<<"   q5   "<<
 289       " Qtrm    "    <<"  Wpi  "<<"  Wk   "<<"  Wp  "<<"Pmom  "<<endl;
 290 cout<<"------------------------------------------------------------------------"<<endl;
 291 for(Int_t i=0;i<trs->GetEntries();i++)
 292 {
 293   TVector xx( *((TVector*)trs->At(i)) );
 294     if( xx.IsValid() && xx(0)>0 )
 295         {
 296             TVector xx( *((TVector*)trs->At(i)) );
 297             if(xx(0)>=2)
 298                 {
 299 //       1)Calculate Qtrm
 300                     xx(6)=(this->qtrm(i));
 301
 302                  }else{
 303                      xx(6)=xx(1);
 304                  }
 305 //       2)Calculate Wpi,Wk,Wp
 306             this->GetPcode(xx(6),xx(10)/1000.);
 307             xx(7)=GetWpi();
 308             xx(8)=GetWk();
 309             xx(9)=GetWp();
 310 //       3)Print table
 311             if(xx(0)>0){
 312                     cout<<xx(0)<<" ";
 313                     for(Int_t j=1;j<11;j++){
 314                         cout.width(7);cout.precision(5);cout<<xx(j);
 315                     }
 316                     cout<<endl;
 317                 }
 318 //        4)Update data in TVector
 319             TClonesArray &arr=*trs;
 320             new(arr[i])TVector(xx);
 321         }
 322     else
 323       {/*cout<<"No data for track "<<i<<endl;*/}
 324 }// End loop for tracks
 325 }
 326 void AliITSPid::Reset(void)
 327 {
 328   for(Int_t i=0;i<trs->GetEntries();i++){
 329     TVector xx(0,11);
 330     TClonesArray &arr=*trs;
 331     new(arr[i])TVector(xx);
 332   }
 333 }
 334 //-----------------------------------------------------------
 335 AliITSPid::AliITSPid(Int_t ntrack)
 336 {
 337     trs = new TClonesArray("TVector",ntrack);
 338     TClonesArray &arr=*trs;
 339     for(Int_t i=0;i<ntrack;i++)new(arr[i])TVector(0,11);
 340     mxtrs=0;
 341 const int inf=10;
 342 //         Ncut Pmom   pilo  pihi    klo    khi     plo    phi
 343 //       cut[j] [0]    [1]    [2]    [3]    [4]     [5]    [6]
 344 //----------------------------------------------------------------
 345     SetCut(  1, 0.12 ,  0.  ,  0.  , inf  , inf   , inf  , inf  );
 346     SetCut(  2, 0.20 ,  0.  ,  6.0 , 6.0  , inf   , inf  , inf  );
 347     SetCut(  3, 0.30 ,  0.  ,  3.5 , 3.5  , 9.0   , 9.0  , inf  );
 348     SetCut(  4, 0.41 ,  0.  ,  1.9 , 1.9  , 4.0   , 4.0  , inf  );
 349 //----------------------------------------------------------------
 350     SetCut(  5, 0.47 ,  1.  ,  0.12, 1.98 , 0.17  , 3.5  , inf  );
 351     SetCut(  6, 0.53 ,  1.  ,  0.12, 1.75 , 0.16  , 3.0  , inf  );
 352 //----------------------------------------------------------------
 353     SetCut(  7, 0.59 ,  0.  ,  0.  , 1.18 , 0.125 , 2.7  , inf  );
 354     SetCut(  8, 0.65 ,  0.  ,  0.  , 1.18 , 0.125 , 2.5  , inf  );
 355     SetCut(  9, 0.73 ,  0.  ,  0.  , 0.   , 0.125 , 2.0  , inf  );
 356 //----------------------------------------------------------------
 357     SetCut( 10, 0.83 ,  0.  ,  0.  , 1.25 , 0.13  , 2.14 , 0.20 );
 358     SetCut( 11, 0.93 ,  0.  ,  0.  , 1.18 , 0.125 , 1.88 , 0.18 );
 359     SetCut( 12, 1.03 ,  0.  ,  0.  , 1.13 , 0.12  , 1.68 , 0.155);
 360 }
 361 //-----------------------------------------------------------
 362