// * about the suitability of this software for any purpose. It is *
// * provided "as is" without express or implied warranty. *
// **************************************************************************
-#include "AliRICHParam.h"
-#include <Riostream.h>
+#include "AliRICHParam.h" //class header
+#include "AliESD.h"
+#include <TCanvas.h> //TestXXX()
+#include <TLatex.h>
+#include <THStack.h>
+#include <TLegend.h>
+#include <TView.h>
+#include <TPolyMarker3D.h>
+#include <TPolyLine3D.h>
+#include <TPolyLine.h>
+#include <TSystem.h>
+#include <TVector2.h>
+#include <TVector3.h>
+#include <TRotation.h>
+#include <AliCDBManager.h> //CdbRead()
+#include <AliCDBStorage.h> //CdbRead()
+#include <AliCDBEntry.h> //CdbRead()
+#include <AliRunLoader.h> //Stack()
+#include <AliStack.h> //Stack()
+#include <TParticle.h> //Stack()
+#include "AliRICHHelix.h" //TestTrans()
ClassImp(AliRICHParam)
-Bool_t AliRICHParam::fgIsWireSag =kTRUE;
-Bool_t AliRICHParam::fgIsResolveClusters =kTRUE;
-Double_t AliRICHParam::fgAngleRot =-60;
-Int_t AliRICHParam::fgHV[kNsectors] ={2150,2100,2050,2000,2150,2150};
-Int_t AliRICHParam::fgNsigmaTh =4;
-Float_t AliRICHParam::fgSigmaThMean =1.5;
-Float_t AliRICHParam::fgSigmaThSpread =0.5;
-Float_t AliRICHParam::fSigmaThMap[kNCH][kNpadsX][kNpadsY];
-
-void AliRICHParam::GenSigmaThMap()
-{
-// Generate the map of thresholds sigmas for all pads of all chambers
- for(Int_t iChamber=0;iChamber<kNCH;iChamber++)
- for(Int_t ipadX=0;ipadX<NpadsX();ipadX++)
- for(Int_t ipadY=0;ipadY<NpadsY();ipadY++)
- fSigmaThMap[iChamber][ipadX][ipadY] = SigmaThMean()+(1.-2*gRandom->Rndm())*SigmaThSpread();
- // Info("GenSigmaThMap"," Threshold map generated for all RICH chambers");
+AliRICHParam * AliRICHParam::fgInstance =0x0; //singleton pointer
+
+Double_t AliRICHParam::fgMass[5] ={0.00051,0.10566,0.13957,0.49360,0.93828};
+
+
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+AliRICHParam::AliRICHParam():TNamed("RichParam","default version")
+{
+// Here all the intitializition is taken place when AliRICHParam::Instance() is invoked for the first time.
+// In particulare, matrices to be used for LORS<->MARS trasnformations are initialized from TGeo structure.
+// Note that TGeoManager should be already initialized from geometry.root file
+ for(Int_t iCh=0;iCh<kNchambers;iCh++) fMatrix[iCh]=(TGeoHMatrix*)gGeoManager->GetVolume("ALIC")->GetNode(Form("RICH_%i",iCh+1))->GetMatrix();
+ CdbRead(0,0);
+ fgInstance=this;
+}//ctor
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+Float_t AliRICHParam::AbsCH4(Float_t eV)
+{
+// Evaluate the absorbtion lenght of CH4 for a photon of energy eV in electron-volts
+ const Float_t kLoschmidt=2.686763e19; // LOSCHMIDT NUMBER IN CM-3
+ const Float_t kPressure=750.0; //mm of Hg
+ const Float_t kTemperature=283.0; //K (10 grad C)
+ const Float_t kPn=kPressure/760.;
+ const Float_t kTn=kTemperature/273.16;
+ const Float_t kC0=-1.655279e-1;
+ const Float_t kC1= 6.307392e-2;
+ const Float_t kC2=-8.011441e-3;
+ const Float_t kC3= 3.392126e-4;
+
+ Float_t crossSection=0;
+ if (eV<7.75)
+ crossSection=0.06e-22;
+ else //------ METHANE CROSS SECTION cm-2 ASTROPH. J. 214, L47 (1978)
+ crossSection=(kC0+kC1*eV+kC2*eV*eV+kC3*eV*eV*eV)*1.e-18;
+
+ Float_t density=kLoschmidt*kPn/kTn; //CH4 molecular concentration (cm^-3)
+ return 1.0/(density*crossSection);
+}//AbsoCH4()
+//__________________________________________________________________________________________________sss
+void AliRICHParam::CdbRead(Int_t run,Int_t version)
+{
+// This methode read all the calibration information and initialise corresponding fields for requested run number
+// Arguments: run - run number for which to retrieve calibration
+// version- version number
+// Returns: none
+
+ AliCDBEntry *pEntry=AliCDBManager::Instance()->Get("RICH/RICHConfig/RefIdxC6F14",run,0,version); //try to get from common local storage
+ if(pEntry){
+ fIdxC6F14=(TF2*)pEntry->GetObject();
+ if(!(AliCDBManager::Instance()->GetCacheFlag())) delete pEntry;
+ }else{
+ AliWarning("No valid calibarion, the hardcoded will be used!");
+ fIdxC6F14=new TF2("RidxC4F14","sqrt(1+0.554*(1239.84e-9/x)^2/((1239.84e-9/x)^2-5796)-0.0005*(y-20))",5.5e-9,8.5e-9,0,50); //DiMauro mail
+ fIdxC6F14->SetUniqueID(20);//T=20 deg C
+ }
+}//CdbRead()
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+void AliRICHParam::Print(Option_t* opt) const
+{
+// print some usefull (hopefully) info on some internal guts of RICH parametrisation
+ Printf("Pads in chamber (%3i,%3i) in sector (%2i,%2i) pad size (%4.2f,%4.2f)",NpadsX(),NpadsY(),NpadsXsec(),NpadsYsec(),PadSizeX(),PadSizeY());
+
+ for(Int_t i=0;i<kNchambers;i++) fMatrix[i]->Print(opt);
+}//Print()
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+void AliRICHParam::TestSeg()
+{
+// Provides a set of pictures to test segementation currently in use.
+// Arguments: none
+// Returns: none
+ new TCanvas("pads","PC segmentation - pads display",700,600);
+ gPad->Range(-5,-5,PcSizeX()+5,PcSizeY()+15);
+ TVector p(2); TVector2 c; TVector2 b; //current: pad, pad center, pad boundary
+// list of corners:
+ Double_t x0=0,x1=SecSizeX(),x2=SecSizeX()+DeadZone() ,x3=PcSizeX();
+ Double_t y0=0,y1=SecSizeY(),y2=SecSizeY()+DeadZone(),y3=2*SecSizeY()+DeadZone(),y4=PcSizeY()-SecSizeY(),y5=PcSizeY();
+ DrawSectors();
+//header
+ TLatex t;
+ t.SetTextSize(0.02); t.SetTextColor(kBlack); t.SetTextAlign(11);
+ t.DrawLatex(0,PcSizeY()+10,Form("IP in front of this page. pad size %.2fx%.2fcm dead zone %.2fcm",PadSizeX(),PadSizeY(),DeadZone()));
+ t.DrawLatex(0,PcSizeY()+ 5,Form("Pc %.2fx%.2f cm %ix%i pads Sec %.2fx%.2f cm %ix%i pads",
+ PcSizeX() , PcSizeY() , NpadsX() , NpadsY() ,
+ SecSizeX() , SecSizeY() , NpadsXsec() , NpadsYsec() ));
+//sectors
+ t.SetTextSize(0.015); t.SetTextColor(kRed); t.SetTextAlign(22);
+ c=Pad2Loc( 40, 24); t.DrawText(c.X(),c.Y(),Form("sec 1 (%.2f,%.2f)",c.X(),c.Y() ));
+ c=Pad2Loc( 40, 75); t.DrawText(c.X(),c.Y(),Form("sec 3 (%.2f,%.2f)",c.X(),c.Y() ));
+ c=Pad2Loc( 40,121); t.DrawText(c.X(),c.Y(),Form("sec 5 (%.2f,%.2f)",c.X(),c.Y() ));
+ c=Pad2Loc(120, 24); t.DrawText(c.X(),c.Y(),Form("sec 2 (%.2f,%.2f)",c.X(),c.Y() ));
+ c=Pad2Loc(120, 75); t.DrawText(c.X(),c.Y(),Form("sec 4 (%.2f,%.2f)",c.X(),c.Y() ));
+ c=Pad2Loc(120,121); t.DrawText(c.X(),c.Y(),Form("sec 6 (%.2f,%.2f)",c.X(),c.Y() ));
+//coners
+ t.SetTextSize(0.015); t.SetTextColor(kBlue);
+
+ b.Set(x0,y0);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x0,y1);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x0,y2);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x0,y3);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x0,y4);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x0,y5);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+
+ b.Set(x1,y0);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x1,y1);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x1,y2);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x1,y3);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x1,y4);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x1,y5);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+
+ b.Set(x2,y0);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x2,y1);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x2,y2);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x2,y3);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x2,y4);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(11);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x2,y5);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(13);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+
+ b.Set(x3,y0);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x3,y1);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x3,y2);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x3,y3);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x3,y4);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(31);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+ b.Set(x3,y5);p=Loc2Pad(b);c=Pad2Loc(p);t.SetTextAlign(33);t.DrawText(c.X(),c.Y(),Form("(%.2f,%.2f)-(%.0f,%.0f)-(%.2f,%.2f)",b.X(),b.Y(),p(0),p(1),c.X(),c.Y()));
+}//TestSeg()
+//__________________________________________________________________________________________________
+void AliRICHParam::TestResp()
+{
+// Provides a set of plot to check the response parametrisation currently in use.
+// Arguments: none
+// Returns: none
+ TCanvas *pC=new TCanvas("c","Amplification test",900,800);
+ pC->Divide(1,2);
+
+
+ const Int_t kNpoints=8;
+ THStack *pStackPhot=new THStack("StackPhot","photons");
+ THStack *pStackMip =new THStack("StackMip","mips");
+ TLegend *pLeg=new TLegend(0.6,0.2,0.9,0.5,"legend");
+ TH1F *apHphot[kNpoints];
+ TH1F *apHmip[kNpoints];
+
+ Double_t starty=0;
+ Double_t deltay=AliRICHParam::SecSizeY()/kNpoints;
+
+ for(int i=0;i<kNpoints;i++){
+ apHphot[i]=new TH1F(Form("hphot%i",i),"Qdc for Photon;QDC;Counts",500,0,500); apHphot[i]->SetLineColor(i);pStackPhot->Add(apHphot[i]);
+ apHmip[i] =new TH1F(Form("hmip%i",i),"Qdc for Mip;QDC;Counts",4000,0,4000); apHmip[i]->SetLineColor(i);pStackMip->Add(apHmip[i]);
+
+ pLeg->AddEntry(apHphot[i],Form("@(10,%5.2f->%5.2f)",starty+i*deltay,starty+i*deltay-SecSizeY()/2));
+ }
+
+
+ TVector2 x2(0,0);
+ for(Int_t i=0;i<10000;i++){//events loop
+ for(int j=0;j<kNpoints;j++){
+ x2.Set(10,starty+j*deltay);
+ apHphot[j]->Fill(TotQdc(x2,0));
+ apHmip[j]->Fill(TotQdc(x2,gRandom->Landau(600,150)*1e-9));
+ }
+ }
+
+ pC->cd(1); pStackMip->Draw("nostack");
+ pC->cd(2); pStackPhot->Draw("nostack"); pLeg->Draw();
+}//TestResp()
+//__________________________________________________________________________________________________
+void AliRICHParam::TestTrans()
+{
+// Tests transformation methods
+// Arguments: none
+// Returns: none
+
+ AliRICHParam *pParam=AliRICHParam::Instance();
+ Int_t iNpointsX=50,iNpointsY=50;
+ new TCanvas("trasform","Test LORS-MARS transform"); TLatex t; t.SetTextSize(0.02);
+
+ TView *pView=new TView(1); pView->SetRange(-400,-400,-400,400,400,400);
+ DrawAxis();
+ for(Int_t iCham=1;iCham<=7;iCham++){//chamber loop
+ AliRICHHelix helix(2.5,Norm(iCham).Theta()*TMath::RadToDeg(),Norm(iCham).Phi()*TMath::RadToDeg());
+ helix.RichIntersect(AliRICHParam::Instance());
+ TPolyMarker3D *pChamber=new TPolyMarker3D(iNpointsX*iNpointsY);
+ Int_t i=0;
+ for(Double_t x=0;x<PcSizeX();x+=PcSizeX()/iNpointsX)
+ for(Double_t y=0;y<PcSizeY();y+=PcSizeY()/iNpointsY){//step loop
+ TVector3 v3=pParam->Lors2Mars(iCham,x,y,kPc); TVector2 v2=pParam->Mars2Lors(iCham,v3,kPc);//LORS->MARS->LORS
+ Double_t dx=v2.X()-x , dy=v2.Y()-y;
+ if(dx>0.000001 || dy>0.000001) Printf("Problem in MARS<->LORS transformations dx=%f dy=%f!!!",dx,dy);
+ pChamber->SetPoint(i++,v3.X(),v3.Y(),v3.Z());//Pc plane point in MARS
+ }//step loop
+ pChamber->SetMarkerSize(1);
+ pChamber->SetMarkerColor(iCham);
+ pChamber->Draw();
+ helix.Draw();
+ t.SetNDC();t.SetTextColor(iCham); t.DrawText(0.1,iCham*0.1,Form("Chamber %i",iCham));
+ }//chambers loop
+}//TestTrans()
+//__________________________________________________________________________________________________
+void AliRICHParam::DrawAxis()
+{
+// This utility methode draws axis on geometry scene
+// Arguments: none
+// Returns: none
+ Double_t x[6]={0,0,0,300,0,0}; Double_t y[6]={0,0,0,0,300,0}; Double_t z[6]={0,0,0,0,0,300};
+ TPolyLine3D *pXaxis=new TPolyLine3D(2,x);pXaxis->SetLineColor(kRed); pXaxis->Draw();
+ TPolyLine3D *pYaxis=new TPolyLine3D(2,y);pYaxis->SetLineColor(kGreen); pYaxis->Draw();
+ TPolyLine3D *pZaxis=new TPolyLine3D(2,z);pZaxis->SetLineColor(kBlue); pZaxis->Draw();
}
//__________________________________________________________________________________________________
-void AliRICHParam::Print()
+void AliRICHParam::DrawSectors()
+{
+// Utility methode draws RICH chamber sectors on event display.
+// Arguments: none
+// Returns: none
+ Double_t xLeft[5] = {0,0,SecSizeX(),SecSizeX(),0};
+ Double_t xRight[5] = {SecSizeX()+DeadZone(),SecSizeX()+DeadZone(),PcSizeX(),PcSizeX(),SecSizeX()+DeadZone()};
+
+ Double_t yDown[5] = {0,SecSizeY(),SecSizeY(),0,0};
+ Double_t yCenter[5] = { SecSizeY()+DeadZone(),2*SecSizeY()+DeadZone(),2*SecSizeY()+DeadZone(),
+ SecSizeY()+DeadZone(),SecSizeY()+DeadZone()};
+ Double_t yUp[5] = {2*SecSizeY()+2*DeadZone(),PcSizeY(),PcSizeY(),2*SecSizeY()+2*DeadZone(),2*SecSizeY()+2*DeadZone()};
+
+ TPolyLine *sec1 = new TPolyLine(5,xLeft ,yDown); sec1->SetLineColor(21); sec1->Draw();
+ TPolyLine *sec2 = new TPolyLine(5,xRight,yDown); sec2->SetLineColor(21); sec2->Draw();
+ TPolyLine *sec3 = new TPolyLine(5,xLeft ,yCenter); sec3->SetLineColor(21); sec3->Draw();
+ TPolyLine *sec4 = new TPolyLine(5,xRight,yCenter); sec4->SetLineColor(21); sec4->Draw();
+ TPolyLine *sec5 = new TPolyLine(5,xLeft, yUp); sec5->SetLineColor(21); sec5->Draw();
+ TPolyLine *sec6 = new TPolyLine(5,xRight,yUp); sec6->SetLineColor(21); sec6->Draw();
+}//DrawSectors()
+//__________________________________________________________________________________________________
+TVector3 AliRICHParam::ForwardTracing(TVector3 entranceTrackPoint, TVector3 vectorTrack, Double_t thetaC, Double_t phiC)
+{
+// Trace a single Ckov photon from a given emission point up to photocathode taking into account ref indexes of materials it travereses
+ TVector3 vBad(-999,-999,-999);
+ TVector3 nPlane(0,0,1);
+ Double_t planeZposition = 0.5*RadThick();
+ TVector3 planePoint(0,0,0.5*RadThick()); //this is plane parallel to window which contains emission point
+ TVector3 emissionPoint = PlaneIntersect(vectorTrack,entranceTrackPoint,nPlane,planePoint);
+ Double_t thetaout,phiout;
+ AnglesInDRS(vectorTrack.Theta(),vectorTrack.Phi(),thetaC,phiC,thetaout,phiout);
+ TVector3 vectorPhotonInC6F14;
+ vectorPhotonInC6F14.SetMagThetaPhi(1,thetaout,phiout);
+ planeZposition=RadThick();
+ planePoint.SetXYZ(0,0,planeZposition);
+ TVector3 entranceToSiO2Point = PlaneIntersect(vectorPhotonInC6F14,emissionPoint,nPlane,planePoint);
+
+ Double_t photonEn = EckovMean();
+ Double_t angleInSiO2 = SnellAngle(IdxC6F14(EckovMean()),IdxSiO2(EckovMean()),vectorPhotonInC6F14.Theta());if(angleInSiO2<0) return vBad;
+ TVector3 vectorPhotonInSiO2;
+ vectorPhotonInSiO2.SetMagThetaPhi(1,angleInSiO2,phiout);
+// planeZposition+=AliRICHParam::SiO2Thickness();
+ planeZposition+=WinThick();
+ planePoint.SetXYZ(0,0,planeZposition);
+ TVector3 entranceToCH4 = PlaneIntersect(vectorPhotonInSiO2,entranceToSiO2Point,nPlane,planePoint);
+// entranceToCH4.Dump();
+
+ // Double_t angleInCH4 = SnellAngle(AliRICHParam::IndOfRefSiO2(6.755),AliRICHParam::IndOfRefCH4,angleInSiO2);
+ Double_t angleInCH4 = SnellAngle(IdxSiO2(photonEn),IdxCH4(photonEn),vectorPhotonInSiO2.Theta());if(angleInCH4<0) return vBad;
+ TVector3 vectorPhotonInCH4;
+ vectorPhotonInCH4.SetMagThetaPhi(1,angleInCH4,phiout);
+// planeZposition+=AliRICHParam::GapProx();
+ planeZposition+=Pc2Win();
+ planePoint.SetXYZ(0,0,planeZposition);
+ TVector3 impactToPC = PlaneIntersect(vectorPhotonInCH4,entranceToCH4,nPlane,planePoint);
+// impactToPC.Dump();
+ return impactToPC;
+}//FowardTracing
+//__________________________________________________________________________________________________
+TVector3 AliRICHParam::PlaneIntersect(const TVector3 &lineDir,const TVector3 &linePoint,const TVector3 &planeNorm,const TVector3 &planePoint)
+{
+// Finds an intersection point between a line and plane.
+// Arguments: lineDir,linePoint - vector along the line and any point of the line
+// planeNorm,planePoint - vector normal to the plane and any point of the plane
+// Returns: point of intersection if any
+ if(planeNorm*lineDir==0) return TVector3(-999,-999,-999);
+ TVector3 diff=planePoint-linePoint;
+ Double_t sint=(planeNorm*diff)/(planeNorm*lineDir);
+ return linePoint+sint*lineDir;
+}//PlaneIntersect
+//__________________________________________________________________________________________________
+Double_t AliRICHParam::SnellAngle(Float_t n1, Float_t n2, Float_t theta1)
{
- cout<<"\nPads in chamber ("<<NpadsX()<<','<<NpadsY()<<") in sector ("<<NpadsXsec()<<','<<NpadsYsec()<<')'<<endl;
- cout<<"PC size ("<<PcSizeX()<<','<<PcSizeY()<<") sector size ("<<SectorSizeX()<<','<<SectorSizeY()<<") pad size ("<<PadSizeX()<<','
- <<PadSizeY()<<") Dead zone "<<DeadZone()<<endl;
- cout<<"Anode wire pitch "<<WirePitch()<<" Anode-Cathode gap "<<AnodeCathodeGap()<<" Protection wires-cathode gap "<<ProximityGap()<<endl<<endl;
+// Compute the angle of refraction out of Snell law
+// Arguments: n1 - ref idx of first substance
+// n2 - ref idx of second substance
+// n1 - photon impact angle in the first substance i.e. angle between the photon direction and vector normal to the surface (radians)
+// Returns: photon refraction angle, i.e. angle in the second substance (radians)
+ Double_t sinref=(n1/n2)*TMath::Sin(theta1);
+ if(sinref>1.) return -999;
+ else return TMath::ASin(sinref);
+}//SnellAngle
+//__________________________________________________________________________________________________
+void AliRICHParam::AnglesInDRS(Double_t trackTheta,Double_t trackPhi,Double_t thetaCerenkov,Double_t phiCerenkov,Double_t &tout,Double_t &pout)
+{
+// Setup the rotation matrix of the track...
+
+ TRotation mtheta;
+ TRotation mphi;
+ TRotation minv;
+ TRotation mrot;
+
+ mtheta.RotateY(trackTheta);
+ mphi.RotateZ(trackPhi);
+
+ mrot = mphi * mtheta;
+ // minv = mrot.Inverse();
+
+ TVector3 photonInRadiator(1,1,1);
+
+ photonInRadiator.SetTheta(thetaCerenkov);
+ photonInRadiator.SetPhi(phiCerenkov);
+ photonInRadiator = mrot * photonInRadiator;
+ tout=photonInRadiator.Theta();
+ pout=photonInRadiator.Phi();
+}//AnglesInDRS
+/*
+void DrawRing()
+{
+
+ // Float_t xGraph[1000],yGraph[1000];
+
+ Float_t type;
+ Float_t MassOfParticle;
+ Float_t beta;
+ Float_t nfreon;
+
+ Float_t ThetaCerenkov;
+
+ Float_t Xtoentr = GetEntranceX();
+ Float_t Ytoentr = GetEntranceY();
+
+ Float_t pmod = GetTrackMomentum();
+ Float_t TrackTheta = GetTrackTheta();
+ Float_t TrackPhi = GetTrackPhi();
+
+ SetPhotonEnergy(AliRICHParam::MeanCkovEnergy());
+ SetFreonRefractiveIndex();
+
+ SetEmissionPoint(RadiatorWidth/2.);
+
+ ThetaCerenkov = GetThetaCerenkov();
+ FindBetaFromTheta(ThetaCerenkov);
+ nfreon = GetFreonRefractiveIndex();
+
+ Int_t nPoints = 100;
+
+ Int_t nPointsToDraw = 0;
+ for(Int_t i=0;i<nPoints;i++)
+ {
+ Float_t phpad = 2*TMath::Pi()*i/nPoints;
+ SetThetaPhotonInTRS(thetacer);
+ SetPhiPhotonInTRS(phpad);
+ FindPhotonAnglesInDRS();
+ Float_t Radius = FromEmissionToCathode();
+ if (Radius == 999.) continue;
+ xGraph[nPointsToDraw] = GetXPointOnCathode() + GetShiftX();
+ yGraph[nPointsToDraw] = GetYPointOnCathode() + GetShiftY();
+ nPointsToDraw++;
+ }
+ gra = new TGraph(nPointsToDraw,xGraph,yGraph);
+ gra->Draw("AC");
}
//__________________________________________________________________________________________________
+*/
+void AliRICHParam::TestHit2SDigs(Double_t x,Double_t y,Double_t e,Bool_t isNew)
+{
+//Test hit->sdigits procedures
+//Arguments: isNew - if true use new (abs pad) procedure else use old one (TVector)
+// Returns: none
+ TClonesArray *pSDigLst=new TClonesArray("AliRICHDigit");
+ Int_t iQtot=-1;
+ if(isNew){
+ iQtot=Hit2SDigs(10101,e,pSDigLst); //new technique
+ }else{
+ iQtot=Hit2SDigs(TVector2(x,y),e,pSDigLst);//old technique
+ }
+ pSDigLst->Print();
+ Double_t dQsum=0;
+ for(Int_t i=0;i<pSDigLst->GetEntriesFast();i++)
+ dQsum+=((AliRICHDigit*)pSDigLst->At(i))->Qdc();
+ Printf("Qtot=%i Qsum=%.2f ",iQtot,dQsum);
+}
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+Int_t AliRICHParam::Stack(Int_t evt,Int_t tid)
+{
+// Prints some usefull info from stack
+// Arguments: evt - event number. if not -1 print info only for that event
+// tid - track id. if not -1 then print it and all it's mothers if any
+// Returns: mother tid of the given tid if any
+ AliRunLoader *pAL=AliRunLoader::Open();
+ if(pAL->LoadHeader()) return -1;
+ if(pAL->LoadKinematics()) return -1;
+
+ Int_t mtid=-1;
+ Int_t iNevt=pAL->GetNumberOfEvents(); Printf("This session contains %i event(s)",iNevt);
+
+ for(Int_t iEvt=0;iEvt<iNevt;iEvt++){//events loop
+ if(evt!=-1 && evt!=iEvt) continue; //in case one needs to print the requested event, ignore all others
+ pAL->GetEvent(iEvt);
+ AliStack *pStack=pAL->Stack();
+ if(tid==-1){ //print all tids for this event
+ for(Int_t i=0;i<pStack->GetNtrack();i++) pStack->Particle(i)->Print();
+ Printf("totally %i tracks including %i primaries for event %i out of %i event(s)",pStack->GetNtrack(),pStack->GetNprimary(),iEvt,iNevt);
+ }else{ //print only this tid and it;s mothers
+ if(tid<0 || tid>pStack->GetNtrack()) {Printf("Wrong tid, valid tid range for event %i is 0-%i",iEvt,pStack->GetNtrack());break;}
+ TParticle *pTrack=pStack->Particle(tid); mtid=pTrack->GetFirstMother();
+ TString str=pTrack->GetName();
+ while((tid=pTrack->GetFirstMother()) >= 0){
+ pTrack=pStack->Particle(tid);
+ str+=" from ";str+=pTrack->GetName();
+ }
+ Printf("%s",str.Data());
+ }//if(tid==-1)
+ }//events loop
+ pAL->UnloadHeader(); pAL->UnloadKinematics();
+ return mtid;
+}
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+Int_t AliRICHParam::StackCount(Int_t pid,Int_t evt)
+{
+// Counts total number of particles of given sort (including secondary) for a given event
+ AliRunLoader *pAL=AliRunLoader::Open();
+ pAL->GetEvent(evt);
+ if(pAL->LoadHeader()) return 0;
+ if(pAL->LoadKinematics()) return 0;
+ AliStack *pStack=pAL->Stack();
+
+ Int_t iCnt=0;
+ for(Int_t i=0;i<pStack->GetNtrack();i++) if(pStack->Particle(i)->GetPdgCode()==pid) iCnt++;
+
+ pAL->UnloadHeader(); pAL->UnloadKinematics();
+ return iCnt;
+}
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff