1 // **************************************************************************
2 // * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 // * Author: The ALICE Off-line Project. *
5 // * Contributors are mentioned in the code where appropriate. *
7 // * Permission to use, copy, modify and distribute this software and its *
8 // * documentation strictly for non-commercial purposes is hereby granted *
9 // * without fee, provided that the above copyright notice appears in all *
10 // * copies and that both the copyright notice and this permission notice *
11 // * appear in the supporting documentation. The authors make no claims *
12 // * about the suitability of this software for any purpose. It is *
13 // * provided "as is" without express or implied warranty. *
14 // **************************************************************************
15 #include "AliHMPIDParam.h" //class header
16 #include "AliHMPIDDigit.h" //ctor
17 #include <TCanvas.h> //TestXXX()
18 #include <TLatex.h> //TestTrans()
19 #include <TView.h> //TestTrans()
20 #include <TPolyMarker3D.h> //TestTrans()
21 #include <TRotation.h>
22 #include <AliRunLoader.h> //Stack()
23 #include <AliStack.h> //Stack()
24 #include <TParticle.h> //Stack()
25 #include "AliHMPIDHelix.h" //TestTrans()
27 ClassImp(AliHMPIDParam)
29 AliHMPIDParam* AliHMPIDParam::fgInstance=0x0; //singleton pointer
30 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
31 AliHMPIDParam::AliHMPIDParam():TNamed("RichParam","default version")
33 // Here all the intitializition is taken place when AliHMPIDParam::Instance() is invoked for the first time.
34 // In particulare, matrices to be used for LORS<->MARS trasnformations are initialized from TGeo structure.
35 // Note that TGeoManager should be already initialized from geometry.root file
36 fX=0.5*AliHMPIDDigit::SizeAllX();
37 fY=0.5*AliHMPIDDigit::SizeAllY();
38 for(Int_t i=0;i<7;i++)
40 fM[i]=(TGeoHMatrix*)gGeoManager->GetVolume("ALIC")->GetNode(Form("HMPID_%i",i))->GetMatrix();
42 fM[i]=new TGeoHMatrix;
43 IdealPosition(i,fM[i]);
47 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
48 void AliHMPIDParam::Print(Option_t* opt) const
50 // print some usefull (hopefully) info on some internal guts of HMPID parametrisation
52 for(Int_t i=0;i<7;i++) fM[i]->Print(opt);
54 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
55 void AliHMPIDParam::IdealPosition(Int_t iCh, TGeoHMatrix *pMatrix)
57 // Construct ideal position matrix for a given chamber
58 // Arguments: iCh- chamber ID; pMatrix- pointer to precreated unity matrix where to store the results
60 const Double_t kAngHor=19.5; // horizontal angle between chambers 19.5 grad
61 const Double_t kAngVer=20; // vertical angle between chambers 20 grad
62 const Double_t kAngCom=30; // common HMPID rotation with respect to x axis 30 grad
63 const Double_t trans[3]={490,0,0}; //center of the chamber is on window-gap surface
64 pMatrix->RotateY(90); //rotate around y since initial position is in XY plane -> now in YZ plane
65 pMatrix->SetTranslation(trans); //now plane in YZ is shifted along x
67 case 0: pMatrix->RotateY(kAngHor); pMatrix->RotateZ(-kAngVer); break; //right and down
68 case 1: pMatrix->RotateZ(-kAngVer); break; //down
69 case 2: pMatrix->RotateY(kAngHor); break; //right
70 case 3: break; //no rotation
71 case 4: pMatrix->RotateY(-kAngHor); break; //left
72 case 5: pMatrix->RotateZ(kAngVer); break; //up
73 case 6: pMatrix->RotateY(-kAngHor); pMatrix->RotateZ(kAngVer); break; //left and up
75 pMatrix->RotateZ(kAngCom); //apply common rotation in XY plane
78 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
79 Int_t AliHMPIDParam::Stack(Int_t evt,Int_t tid)
81 // Prints some useful info from stack
82 // Arguments: evt - event number. if not -1 print info only for that event
83 // tid - track id. if not -1 then print it and all it's mothers if any
84 // Returns: mother tid of the given tid if any
85 AliRunLoader *pAL=AliRunLoader::Open();
86 if(pAL->LoadHeader()) return -1;
87 if(pAL->LoadKinematics()) return -1;
90 Int_t iNevt=pAL->GetNumberOfEvents();
92 for(Int_t iEvt=0;iEvt<iNevt;iEvt++){//events loop
93 if(evt!=-1 && evt!=iEvt) continue; //in case one needs to print the requested event, ignore all others
95 AliStack *pStack=pAL->Stack();
96 if(tid==-1){ //print all tids for this event
97 for(Int_t i=0;i<pStack->GetNtrack();i++) pStack->Particle(i)->Print();
98 Printf("totally %i tracks including %i primaries for event %i out of %i event(s)",pStack->GetNtrack(),pStack->GetNprimary(),iEvt,iNevt);
99 }else{ //print only this tid and it;s mothers
100 if(tid<0 || tid>pStack->GetNtrack()) {Printf("Wrong tid, valid tid range for event %i is 0-%i",iEvt,pStack->GetNtrack());break;}
101 TParticle *pTrack=pStack->Particle(tid); mtid=pTrack->GetFirstMother();
102 TString str=pTrack->GetName();
103 while((tid=pTrack->GetFirstMother()) >= 0){
104 pTrack=pStack->Particle(tid);
105 str+=" from ";str+=pTrack->GetName();
109 pAL->UnloadHeader(); pAL->UnloadKinematics();
112 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
113 Int_t AliHMPIDParam::StackCount(Int_t pid,Int_t evt)
115 // Counts total number of particles of given sort (including secondary) for a given event
116 AliRunLoader *pAL=AliRunLoader::Open();
118 if(pAL->LoadHeader()) return 0;
119 if(pAL->LoadKinematics()) return 0;
120 AliStack *pStack=pAL->Stack();
123 for(Int_t i=0;i<pStack->GetNtrack();i++) if(pStack->Particle(i)->GetPdgCode()==pid) iCnt++;
125 pAL->UnloadHeader(); pAL->UnloadKinematics();
128 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++