// * about the suitability of this software for any purpose. It is *
// * provided "as is" without express or implied warranty. *
// **************************************************************************
-#include "AliRICHParam.h"
+#include "AliRICHParam.h" //class header
#include "AliESD.h"
-#include "AliRICHChamber.h"
-#include <TCanvas.h>
+#include <TCanvas.h> //TestXXX()
#include <TLatex.h>
#include <THStack.h>
#include <TLegend.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; //take ware sagita into account?
-Bool_t AliRICHParam::fgIsResolveClusters =kTRUE; //do cluster resolving?
-Bool_t AliRICHParam::fgIsFeedback =kTRUE; //generate feedback photons?
-Bool_t AliRICHParam::fgIsRadioSrc =kFALSE; //put radioactive source instead of radiators?
-Bool_t AliRICHParam::fgIsAerogel =kFALSE; //special aerogel configuration
-Bool_t AliRICHParam::fgIsTestBeam =kFALSE; //special test beam configuration
+AliRICHParam * AliRICHParam::fgInstance =0x0; //singleton pointer
-Int_t AliRICHParam::fgHV[kNsectors] ={2050,2050,2050,2050,2050,2050};
-Int_t AliRICHParam::fgNsigmaTh =4;
-Float_t AliRICHParam::fgSigmaThMean =1.132; //QDC
-Float_t AliRICHParam::fgSigmaThSpread =0.035; //
-Double_t AliRICHParam::fgErrChrom[4][330]; //
-Double_t AliRICHParam::fgErrGeom[4][330]; //
-Double_t AliRICHParam::fgErrLoc[4][330]; //Chromatic, Geometric and Localization array to parametrize SigmaCerenkov
Double_t AliRICHParam::fgMass[5] ={0.00051,0.10566,0.13957,0.49360,0.93828};
-//__________________________________________________________________________________________________
-void AliRICHParam::Print(Option_t*) const
-{
-//print some usefull (hopefully) info on some internal guts of RICH parametrisation
- AliInfo(Form("Pads in chamber (%3i,%3i) in sector (%2i,%2i) pad size (%4.2f,%4.2f)",NpadsX(),NpadsY(),NpadsXsec(),NpadsYsec(),PadSizeX(),PadSizeY()));
- AliInfo(Form("Resolve clusters %i sagita %i Radio source %i Aerogel %i TestBeam %i",
- IsResolveClusters(),IsWireSag(),IsRadioSrc(),IsAerogel(),IsTestBeam()));
- fpChambers->Print();
-}//Print()
-//__________________________________________________________________________________________________
-void AliRICHParam::CreateChambers()
+
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+AliRICHParam::AliRICHParam():TNamed("RichParam","default version")
{
-//Create all RICH Chambers on each call. Previous chambers deleted.
- if(fpChambers) delete fpChambers;
- if(fgIsTestBeam){
- fpChambers=new TObjArray(1);//test beam configuration 1 chamber
- fpChambers->AddAt(new AliRICHChamber(0),0);
- }else{
- fpChambers=new TObjArray(kNchambers);//normal configuration 7 chambers
- for(int iChamberN=0;iChamberN<kNchambers;iChamberN++) fpChambers->AddAt(new AliRICHChamber(iChamberN+1),iChamberN);
- }
- fpChambers->SetOwner();
-}//CreateChambers()
-//__________________________________________________________________________________________________
+// 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
+// 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)
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.
+// 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=SectorSizeX(),x2=SectorSizeX()+DeadZone(), x3=PcSizeX();
- Double_t y0=0,y1=SectorSizeY(),y2=SectorSizeY()+DeadZone(),y3=2*SectorSizeY()+DeadZone(),y4=PcSizeY()-SectorSizeY(),y5=PcSizeY();
+ 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.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() ,
- SectorSizeX() , SectorSizeY() , NpadsXsec() , NpadsYsec() ));
+ 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() ));
//__________________________________________________________________________________________________
void AliRICHParam::TestResp()
{
-//Provides a set of plot to check the response parametrisation currently in use.
+// 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);
TH1F *apHmip[kNpoints];
Double_t starty=0;
- Double_t deltay=AliRICHParam::SectorSizeY()/kNpoints;
+ 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-SectorSizeY()/2));
+ pLeg->AddEntry(apHphot[i],Form("@(10,%5.2f->%5.2f)",starty+i*deltay,starty+i*deltay-SecSizeY()/2));
}
//__________________________________________________________________________________________________
void AliRICHParam::TestTrans()
{
-//Provides a set of plots to test transformation methods
- new TCanvas("trasform","Test LRS-MRS transform");
- TLatex t; t.SetTextSize(0.02);
+// Tests transformation methods
+// Arguments: none
+// Returns: none
- TView *pView=new TView(1);
- pView->SetRange(-600,-600,-600,600,600,600);
- DrawAxis();
-//Draw PC for all chambers by trasfering Pc plane using Pc2Mrs methode
+ AliRICHParam *pParam=AliRICHParam::Instance();
Int_t iNpointsX=50,iNpointsY=50;
- for(Int_t iChamberN=1;iChamberN<=7;iChamberN++){//chamber loop
+ 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=C(iChamberN)->Pc2Mrs(TVector2(x,y));//from regular grid of local PC points to MRS presentation
- pChamber->SetPoint(i++,v3.X(),v3.Y(),v3.Z());//Pc plane poing in MRS
+ 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(iChamberN);
+ pChamber->SetMarkerColor(iCham);
pChamber->Draw();
- t.SetNDC();t.SetTextColor(iChamberN); t.DrawText(0.1,iChamberN*0.1,Form("Chamber %i",iChamberN));
- }//chamber loop
-// gPad->GetView()->RotateView(94,45);
+ helix.Draw();
+ t.SetNDC();t.SetTextColor(iCham); t.DrawText(0.1,iCham*0.1,Form("Chamber %i",iCham));
+ }//chambers loop
}//TestTrans()
//__________________________________________________________________________________________________
void AliRICHParam::DrawAxis()
{
-//Utility: draws axis on geometry scene
+// 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();
//__________________________________________________________________________________________________
void AliRICHParam::DrawSectors()
{
-//Utility: draws RICH chamber sectors on event display.
- Double_t xLeft[5] = {0,0,SectorSizeX(),SectorSizeX(),0};
- Double_t xRight[5] = {SectorSizeX()+DeadZone(),SectorSizeX()+DeadZone(),PcSizeX(),PcSizeX(),SectorSizeX()+DeadZone()};
+// 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,SectorSizeY(),SectorSizeY(),0,0};
- Double_t yCenter[5] = { SectorSizeY()+DeadZone(),2*SectorSizeY()+DeadZone(),2*SectorSizeY()+DeadZone(),
- SectorSizeY()+DeadZone(),SectorSizeY()+DeadZone()};
- Double_t yUp[5] = {2*SectorSizeY()+2*DeadZone(),PcSizeY(),PcSizeY(),2*SectorSizeY()+2*DeadZone(),2*SectorSizeY()+2*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 *sec6 = new TPolyLine(5,xRight,yUp); sec6->SetLineColor(21); sec6->Draw();
}//DrawSectors()
//__________________________________________________________________________________________________
-void AliRICHParam::ReadErrFiles()
-{
-// Read the three files corresponding to Chrom,Geom and Loc
-// They are parameters of a polynomial of 6th order...
-
- static Bool_t count = kFALSE;
-
- Float_t c0,c1,c2,c3,c;
- Float_t g0,g1,g2,g3,g;
- Float_t l0,l1,l2,l3,l;
-
- FILE *pChromErr, *pGeomErr, *pLocErr;
-
- if(!count) {
- AliInfoGeneral("ReadErrFiles","reading RICH error parameters...");
- pChromErr = fopen(Form("%s/RICH/RICHConfig/SigmaChromErr.txt",gSystem->Getenv("ALICE_ROOT")),"r");
- pGeomErr = fopen(Form("%s/RICH/RICHConfig/SigmaGeomErr.txt",gSystem->Getenv("ALICE_ROOT")),"r");
- pLocErr = fopen(Form("%s/RICH/RICHConfig/SigmaLocErr.txt",gSystem->Getenv("ALICE_ROOT")),"r");
- if(!pChromErr||!pGeomErr||!pLocErr) {AliErrorGeneral("ReadErrFiles"," RICH ERROR READING Parameter FILES: can't open files!!! ");return;}
- for(Int_t i=0;i<330;i++) {
- fscanf(pChromErr,"%f%f%f%f%f\n",&c0,&c1,&c2,&c3,&c);
- fscanf(pGeomErr,"%f%f%f%f%f\n",&g0,&g1,&g2,&g3,&g);
- fscanf(pLocErr,"%f%f%f%f%f\n",&l0,&l1,&l2,&l3,&l);
- fgErrChrom[0][i] = c0;
- fgErrChrom[1][i] = c1;
- fgErrChrom[2][i] = c2;
- fgErrChrom[3][i] = c3;
- fgErrGeom[0][i] = g0;
- fgErrGeom[1][i] = g1;
- fgErrGeom[2][i] = g2;
- fgErrGeom[3][i] = g3;
- fgErrLoc[0][i] = l0;
- fgErrLoc[1][i] = l1;
- fgErrLoc[2][i] = l2;
- fgErrLoc[3][i] = l3;
- }
- AliInfoGeneral("ReadErrFiles","DONE successfully!");
- fclose(pChromErr);
- fclose(pGeomErr);
- fclose(pLocErr);
- }
- count = kTRUE;
-}//ReadErrFiles()
-//__________________________________________________________________________________________________
-TVector3 AliRICHParam::SigmaSinglePhoton(Int_t partID, Double_t mom, Double_t theta, Double_t phi)
-
-{
-// Find sigma for single photon. It returns the thrree different errors. If you want
-// to have the error---> TVector3.Mag()
-// partID = 0,1,2,3,4 ---> e,mu,pi,k,p in agreement with AliPID
- TVector3 v(-999,-999,-999);
- Double_t pmom;
-
- ReadErrFiles();
- Double_t mass = fgMass[partID];
- Double_t massRef = fgMass[4]; // all the files are calculated for protons...so mass ref is proton mass
- pmom = mom*massRef/mass; // normalized momentum respect to proton...
- if(pmom>6.5) pmom = 6.5;
- Double_t oneOverRefIndex = 1/RefIdxC6F14(6.755);
- Double_t pmin = mass*oneOverRefIndex/TMath::Sqrt(1-oneOverRefIndex*oneOverRefIndex);
- if(pmom<pmin) return v;
- v.SetX(Interpolate(fgErrChrom,pmom,theta,phi));
- v.SetY(Interpolate(fgErrGeom,pmom,theta,phi));
- v.SetZ(Interpolate(fgErrLoc,pmom,theta,phi));
- v*=1.5; // take into account bigger errors due to multiplicity...to change in future
-
- return v;
-}//SigmaSinglePhoton
-//__________________________________________________________________________________________________
-Double_t AliRICHParam::Interpolate(Double_t par[4][330], Double_t x, Double_t y, Double_t phi)
-
-{
- static Double_t amin = 1.15; static Double_t astep = 0.2;
- static Double_t bmin = 0; static Double_t bstep = 1;
-
- Double_t Phi = (phi - 180)/300.;
-
- Double_t Sigma[30][11];
-
- for(Int_t j=0;j<11;j++) { for(Int_t i=0;i<30;i++) {
- Sigma[i][j] = par[0][j+11*i] + par[1][j+11*i]*Phi*Phi + par[2][j+11*i]*TMath::Power(Phi,4) + par[3][j+11*i]*TMath::Power(Phi,6);
- }
- }
-
- Int_t i=0;Int_t j=0;
-
- i = (Int_t)((x-amin)/astep);
- j = (Int_t)((y-bmin)/bstep);
- Double_t ai = amin+i*astep;
- Double_t ai1 = ai+astep;
- Double_t bj = bmin+j*bstep;
- Double_t bj1 = bj+bstep;
- Double_t t = (x-ai)/(ai1-ai);
- Double_t gj = (1-t)*Sigma[i][j]+t*Sigma[i+1][j];
- Double_t gj1 = (1-t)*Sigma[i][j+1]+t*Sigma[i+1][j+1];
- Double_t u = (y-bj)/(bj1-bj);
- return (1-u)*gj+u*gj1;
-}//Interpolate
-//__________________________________________________________________________________________________
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*Zfreon();
- TVector3 planePoint(0,0,planeZposition);
+ 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);
-// emissionPoint.Dump();
Double_t thetaout,phiout;
AnglesInDRS(vectorTrack.Theta(),vectorTrack.Phi(),thetaC,phiC,thetaout,phiout);
-// cout << "thetaout "<<thetaout << " phiout " << phiout << endl;
TVector3 vectorPhotonInC6F14;
vectorPhotonInC6F14.SetMagThetaPhi(1,thetaout,phiout);
-// vectorPhotonInC6F14.Dump();
-// planeZposition=AliRICHParam::C6F14Thickness();
- planeZposition=Zfreon();
+ planeZposition=RadThick();
planePoint.SetXYZ(0,0,planeZposition);
TVector3 entranceToSiO2Point = PlaneIntersect(vectorPhotonInC6F14,emissionPoint,nPlane,planePoint);
-// entranceToSiO2Point.Dump();
- Double_t photonEn = MeanCkovEnergy();
- Double_t angleInSiO2 = SnellAngle(RefIdxC6F14(photonEn),RefIdxSiO2(photonEn),vectorPhotonInC6F14.Theta());if(angleInSiO2<0) return vBad;
+ 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+=Zwin();
+ 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(RefIdxSiO2(photonEn),RefIdxCH4(photonEn),vectorPhotonInSiO2.Theta());if(angleInCH4<0) return vBad;
+ 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();
return impactToPC;
}//FowardTracing
//__________________________________________________________________________________________________
-TVector3 AliRICHParam::PlaneIntersect(TVector3 vstart,TVector3 p0,TVector3 n,TVector3 v0)
+TVector3 AliRICHParam::PlaneIntersect(const TVector3 &lineDir,const TVector3 &linePoint,const TVector3 &planeNorm,const TVector3 &planePoint)
{
-//
- TVector3 parallel(-999,-999,-999);
- // vstart = given vector
- // p0 = origin of the given vector
- // n = normal to a given plane
- // v0 = point of the given plane
-// cout << " n*vstart = " << n*vstart << endl;
- if(n*vstart==0) return parallel;
- TVector3 diff=v0-p0;
- Double_t sint=(n*diff)/(n*vstart);
- return p0+sint*vstart;
+// 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)
{
-// Snell law
-// Compute the Snell angle
-
- Double_t sinrefractangle;
- Double_t refractangle;
-
- sinrefractangle = (n1/n2)*sin(theta1);
-
- if(sinrefractangle>1.) {
- // cout << " PROBLEMS IN SNELL ANGLE !!!!! " << endl;
- refractangle = -999.;
- return refractangle;
- }
-
- refractangle = asin(sinrefractangle);
- return refractangle;
+// 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)
tout=photonInRadiator.Theta();
pout=photonInRadiator.Phi();
}//AnglesInDRS
-//__________________________________________________________________________________________________
-
-//__________________________________________________________________________________________________
-//__________________________________________________________________________________________________
/*
void DrawRing()
{
}
//__________________________________________________________________________________________________
*/
+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