/************************************************************************** * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * * * Author: The ALICE Off-line Project. * * Contributors are mentioned in the code where appropriate. * * * * Permission to use, copy, modify and distribute this software and its * * documentation strictly for non-commercial purposes is hereby granted * * without fee, provided that the above copyright notice appears in all * * copies and that both the copyright notice and this permission notice * * appear in the supporting documentation. The authors make no claims * * about the suitability of this software for any purpose. It is * * provided "as is" without express or implied warranty. * **************************************************************************/ #include #include #include #include #include #include #include #include #include //for kNuetron #include #include #include #include #include #include "AliConst.h" #include "AliMagF.h" #include "AliPDG.h" #include "AliRICHGeometry.h" #include "AliRICHResponse.h" #include "AliRICHSegmentationV1.h" #include "AliRICHv3.h" #include "AliRun.h" #include "AliMC.h" ClassImp(AliRICHv3) //______________________________________________________________ // Implementation of the RICH version 3 with azimuthal rotation AliRICHv3::AliRICHv3(const char *sName, const char *sTitle) :AliRICH(sName,sTitle) { // The named ctor currently creates a single copy of // AliRICHGeometry AliRICHSegmentationV1 AliRICHResponse // and initialises the corresponding models of all 7 chambers with these stuctures. // Note: all chambers share the single copy of models. MUST be changed later (???). if(GetDebug())Info("named ctor","Start."); fCkovNumber=fFreonProd=0; AliRICHGeometry *pRICHGeometry =new AliRICHGeometry; // ??? to be moved to AlRICHChamber::named ctor AliRICHSegmentationV1 *pRICHSegmentation=new AliRICHSegmentationV1; // ??? to be moved to AlRICHChamber::named ctor AliRICHResponse *pRICHResponse =new AliRICHResponse; // ??? to be moved to AlRICHChamber::named ctor for (Int_t i=1; i<=kNCH; i++){ SetGeometryModel(i,pRICHGeometry); SetSegmentationModel(i,pRICHSegmentation); SetResponseModel(i,pRICHResponse); C(i)->Init(i); // ??? to be removed } if(GetDebug())Info("named ctor","Stop."); }//AliRICHv3::ctor(const char *pcName, const char *pcTitle) AliRICHv3::~AliRICHv3() { // Dtor deletes RICH models. In future (???) AliRICHChamber will be responsible for that. if(GetDebug()) cout<\n"; if(fChambers) { AliRICHChamber *ch =C(1); if(ch) { delete ch->GetGeometryModel(); delete ch->GetResponseModel(); delete ch->GetSegmentationModel(); } } }//AliRICHv3::dtor() //______________________________________________________________________________ void AliRICHv3::StepManager() {//Full Step Manager Int_t copy, id; static Int_t idvol; static Int_t vol[2]; Int_t ipart; static Float_t hits[22]; static Float_t ckovData[19]; TLorentzVector position; TLorentzVector momentum; Float_t pos[3]; Float_t mom[4]; Float_t localPos[3]; Float_t localMom[4]; Float_t localTheta,localPhi; Float_t theta,phi; Float_t destep, step; Double_t ranf[2]; Float_t coscerenkov; static Float_t eloss, xhit, yhit, tlength; const Float_t kBig=1.e10; TClonesArray &lhits = *fHits; TParticle *current = (TParticle*)(*gAlice->GetMCApp()->Particles())[gAlice->GetMCApp()->GetCurrentTrackNumber()]; //if (current->Energy()>1) //{ // Only gas gap inside chamber // Tag chambers and record hits when track enters id=gMC->CurrentVolID(copy); idvol = copy-1; Float_t cherenkovLoss=0; //gAlice->KeepTrack(gAlice->GetCurrentTrackNumber()); gMC->TrackPosition(position); pos[0]=position(0); pos[1]=position(1); pos[2]=position(2); //bzero((char *)ckovData,sizeof(ckovData)*19); ckovData[1] = pos[0]; // X-position for hit ckovData[2] = pos[1]; // Y-position for hit ckovData[3] = pos[2]; // Z-position for hit ckovData[6] = 0; // dummy track length //ckovData[11] = gAlice->GetCurrentTrackNumber(); //printf("\n+++++++++++\nTrack: %d\n++++++++++++\n",gAlice->GetCurrentTrackNumber()); //AliRICH *RICH = (AliRICH *) gAlice->GetDetector("RICH"); /********************Store production parameters for Cerenkov photons************************/ //is it a Cerenkov photon? if (gMC->TrackPid() == 50000050) { //if (gMC->VolId("GAP ")==gMC->CurrentVolID(copy)) //{ Float_t ckovEnergy = current->Energy(); //energy interval for tracking if (ckovEnergy > 5.6e-09 && ckovEnergy < 7.8e-09 ) //if (ckovEnergy > 0) { if (gMC->IsTrackEntering()){ //is track entering? //printf("Track entered (1)\n"); if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy)) { //is it in freo? if (gMC->IsNewTrack()){ //is it the first step? //printf("I'm in!\n"); Int_t mother = current->GetFirstMother(); //printf("Second Mother:%d\n",current->GetSecondMother()); ckovData[10] = mother; ckovData[11] = gAlice->GetMCApp()->GetCurrentTrackNumber(); ckovData[12] = 1; //Media where photon was produced 1->Freon, 2->Quarz //printf("Produced in FREO\n"); fCkovNumber++; fFreonProd=1; //printf("Index: %d\n",fCkovNumber); } //first step question } //freo question if (gMC->IsNewTrack()){ //is it first step? if (gMC->VolId("QUAR")==gMC->CurrentVolID(copy)) //is it in quarz? { ckovData[12] = 2; //printf("Produced in QUAR\n"); } //quarz question } //first step question //printf("Before %d\n",fFreonProd); } //track entering question if (ckovData[12] == 1) //was it produced in Freon? //if (fFreonProd == 1) { if (gMC->IsTrackEntering()){ //is track entering? //printf("Track entered (2)\n"); //printf("Current volume (should be META): %s\n",gMC->CurrentVolName()); //printf("VolId: %d, CurrentVolID: %d\n",gMC->VolId("META"),gMC->CurrentVolID(copy)); if (gMC->VolId("META")==gMC->CurrentVolID(copy)) //is it in gap? { //printf("Got in META\n"); gMC->TrackMomentum(momentum); mom[0]=momentum(0); mom[1]=momentum(1); mom[2]=momentum(2); mom[3]=momentum(3); gMC->Gmtod(mom,localMom,2); Float_t cophi = TMath::Cos(TMath::ATan2(localMom[0], localMom[1])); Float_t t = (1. - .025 / cophi) * (1. - .05 / cophi); /**************** Photons lost in second grid have to be calculated by hand************/ gMC->GetRandom()->RndmArray(1,ranf); if (ranf[0] > t) { gMC->StopTrack(); ckovData[13] = 5; AddCerenkov(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,ckovData); //printf("Added One (1)!\n"); //printf("Lost one in grid\n"); } /**********************************************************************************/ } //gap //printf("Current volume (should be CSI) (1): %s\n",gMC->CurrentVolName()); //printf("VolId: %d, CurrentVolID: %d\n",gMC->VolId("CSI "),gMC->CurrentVolID(copy)); if (gMC->VolId("CSI ")==gMC->CurrentVolID(copy)) //is it in csi? { //printf("Got in CSI\n"); gMC->TrackMomentum(momentum); mom[0]=momentum(0); mom[1]=momentum(1); mom[2]=momentum(2); mom[3]=momentum(3); gMC->Gmtod(mom,localMom,2); /********* Photons lost by Fresnel reflection have to be calculated by hand********/ /***********************Cerenkov phtons (always polarised)*************************/ Double_t localTc = localMom[0]*localMom[0]+localMom[2]*localMom[2]; Double_t localRt = TMath::Sqrt(localTc); localTheta = Float_t(TMath::ATan2(localRt,Double_t(localMom[1]))); Double_t cotheta = TMath::Abs(cos(localTheta)); Float_t t = Fresnel(ckovEnergy*1e9,cotheta,1); gMC->GetRandom()->RndmArray(1,ranf); if (ranf[0] < t) { gMC->StopTrack(); ckovData[13] = 6; AddCerenkov(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,ckovData); //printf("Added One (2)!\n"); //printf("Lost by Fresnel\n"); } /**********************************************************************************/ } } //track entering? /********************Evaluation of losses************************/ /******************still in the old fashion**********************/ TArrayI procs; Int_t i1 = gMC->StepProcesses(procs); //number of physics mechanisms acting on the particle for (Int_t i = 0; i < i1; ++i) { // Reflection loss if (procs[i] == kPLightReflection) { //was it reflected ckovData[13]=10; if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy)) ckovData[13]=1; if (gMC->CurrentVolID(copy) == gMC->VolId("QUAR")) ckovData[13]=2; //gMC->StopTrack(); //AddCerenkov(gAlice->GetCurrentTrackNumber(),vol,ckovData); } //reflection question // Absorption loss else if (procs[i] == kPLightAbsorption) { //was it absorbed? //printf("Got in absorption\n"); ckovData[13]=20; if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy)) ckovData[13]=11; if (gMC->CurrentVolID(copy) == gMC->VolId("QUAR")) ckovData[13]=12; if (gMC->CurrentVolID(copy) == gMC->VolId("META")) ckovData[13]=13; if (gMC->CurrentVolID(copy) == gMC->VolId("GAP ")) ckovData[13]=13; if (gMC->CurrentVolID(copy) == gMC->VolId("SRIC")) ckovData[13]=15; // CsI inefficiency if (gMC->CurrentVolID(copy) == gMC->VolId("CSI ")) { ckovData[13]=16; } gMC->StopTrack(); AddCerenkov(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,ckovData); //printf("Added One (3)!\n"); //printf("Added cerenkov %d\n",fCkovNumber); } //absorption question // Photon goes out of tracking scope else if (procs[i] == kPStop) { //is it below energy treshold? ckovData[13]=21; gMC->StopTrack(); AddCerenkov(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,ckovData); //printf("Added One (4)!\n"); } // energy treshold question } //number of mechanisms cycle /**********************End of evaluation************************/ } //freon production question } //energy interval question //}//inside the proximity gap question } //cerenkov photon question /**************************************End of Production Parameters Storing*********************/ /*******************************Treat photons that hit the CsI (Ckovs and Feedbacks)************/ if (gMC->TrackPid() == 50000050 || gMC->TrackPid() == 50000051) { //printf("Cerenkov\n"); //if (gMC->TrackPid() == 50000051) //printf("Tracking a feedback\n"); if (gMC->VolId("CSI ")==gMC->CurrentVolID(copy)) { //printf("Current volume (should be CSI) (2): %s\n",gMC->CurrentVolName()); //printf("VolId: %d, CurrentVolID: %d\n",gMC->VolId("CSI "),gMC->CurrentVolID(copy)); //printf("Got in CSI\n"); //printf("Tracking a %d\n",gMC->TrackPid()); if (gMC->Edep() > 0.){ gMC->TrackPosition(position); gMC->TrackMomentum(momentum); pos[0]=position(0); pos[1]=position(1); pos[2]=position(2); mom[0]=momentum(0); mom[1]=momentum(1); mom[2]=momentum(2); mom[3]=momentum(3); Double_t tc = mom[0]*mom[0]+mom[1]*mom[1]; Double_t rt = TMath::Sqrt(tc); theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg; phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg; gMC->CurrentVolOffID(2,copy); vol[0]=copy; idvol=vol[0]-1; gMC->Gmtod(pos,localPos,1); //Chamber(idvol).GlobaltoLocal(pos,localPos); gMC->Gmtod(mom,localMom,2); //Chamber(idvol).GlobaltoLocal(mom,localMom); gMC->CurrentVolOffID(2,copy); vol[0]=copy; idvol=vol[0]-1; //Int_t sector=((AliRICHChamber*) (*fChambers)[idvol]) //->Sector(localPos[0], localPos[2]); //printf("Sector:%d\n",sector); /*if (gMC->TrackPid() == 50000051){ fFeedbacks++; printf("Feedbacks:%d\n",fFeedbacks); }*/ //PH ((AliRICHChamber*) (*fChambers)[idvol]) ((AliRICHChamber*)fChambers->At(idvol)) ->SigGenInit(localPos[0], localPos[2], localPos[1]); if(idvolTrackPid(); // particle type ckovData[1] = pos[0]; // X-position for hit ckovData[2] = pos[1]; // Y-position for hit ckovData[3] = pos[2]; // Z-position for hit ckovData[4] = theta; // theta angle of incidence ckovData[5] = phi; // phi angle of incidence ckovData[8] = (Float_t) fNsdigits; // first sdigit ckovData[9] = -1; // last pad hit ckovData[13] = 4; // photon was detected ckovData[14] = mom[0]; ckovData[15] = mom[1]; ckovData[16] = mom[2]; destep = gMC->Edep(); gMC->SetMaxStep(kBig); cherenkovLoss += destep; ckovData[7]=cherenkovLoss; ckovData[17] = Hits2SDigits(localPos[0],localPos[2],cherenkovLoss,idvol,kPhoton);//for photons in CsI if (fNsdigits > (Int_t)ckovData[8]) { ckovData[8]= ckovData[8]+1; ckovData[9]= (Float_t) fNsdigits; } //TClonesArray *Hits = RICH->Hits(); AliRICHhit *mipHit = (AliRICHhit*) (fHits->UncheckedAt(0)); if (mipHit) { mom[0] = current->Px(); mom[1] = current->Py(); mom[2] = current->Pz(); Float_t mipPx = mipHit->MomX(); Float_t mipPy = mipHit->MomY(); Float_t mipPz = mipHit->MomZ(); Float_t r = mom[0]*mom[0] + mom[1]*mom[1] + mom[2]*mom[2]; Float_t rt = TMath::Sqrt(r); Float_t mipR = mipPx*mipPx + mipPy*mipPy + mipPz*mipPz; Float_t mipRt = TMath::Sqrt(mipR); if ((rt*mipRt) > 0) { coscerenkov = (mom[0]*mipPx + mom[1]*mipPy + mom[2]*mipPz)/(rt*mipRt); } else { coscerenkov = 0; } Float_t cherenkov = TMath::ACos(coscerenkov); ckovData[18]=cherenkov; } //if (sector != -1) //{ AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,ckovData); AddCerenkov(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,ckovData); //printf("Added One (5)!\n"); //} } } } } /***********************************************End of photon hits*********************************************/ /**********************************************Charged particles treatment*************************************/ else if (gMC->TrackCharge()){ //If MIP /*if (gMC->IsTrackEntering()) { hits[13]=20;//is track entering? }*/ if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy)) { gMC->TrackMomentum(momentum); mom[0]=momentum(0); mom[1]=momentum(1); mom[2]=momentum(2); mom[3]=momentum(3); hits [19] = mom[0]; hits [20] = mom[1]; hits [21] = mom[2]; fFreonProd=1; } if (gMC->VolId("GAP ")== gMC->CurrentVolID(copy)) {//is in GAP? // Get current particle id (ipart), track position (pos) and momentum (mom) gMC->CurrentVolOffID(3,copy); vol[0]=copy; idvol=vol[0]-1; //Int_t sector=((AliRICHChamber*) (*fChambers)[idvol]) //->Sector(localPos[0], localPos[2]); //printf("Sector:%d\n",sector); gMC->TrackPosition(position); gMC->TrackMomentum(momentum); pos[0]=position(0); pos[1]=position(1); pos[2]=position(2); mom[0]=momentum(0); mom[1]=momentum(1); mom[2]=momentum(2); mom[3]=momentum(3); gMC->Gmtod(pos,localPos,1); //Chamber(idvol).GlobaltoLocal(pos,localPos); gMC->Gmtod(mom,localMom,2); //Chamber(idvol).GlobaltoLocal(mom,localMom); ipart = gMC->TrackPid(); // // momentum loss and steplength in last step destep = gMC->Edep(); step = gMC->TrackStep(); // // record hits when track enters ... if( gMC->IsTrackEntering()) { // gMC->SetMaxStep(fMaxStepGas); Double_t tc = mom[0]*mom[0]+mom[1]*mom[1]; Double_t rt = TMath::Sqrt(tc); theta = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg; phi = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg; Double_t localTc = localMom[0]*localMom[0]+localMom[2]*localMom[2]; Double_t localRt = TMath::Sqrt(localTc); localTheta = Float_t(TMath::ATan2(localRt,Double_t(localMom[1])))*kRaddeg; localPhi = Float_t(TMath::ATan2(Double_t(localMom[2]),Double_t(localMom[0])))*kRaddeg; hits[0] = Float_t(ipart); // particle type hits[1] = localPos[0]; // X-position for hit hits[2] = localPos[1]; // Y-position for hit hits[3] = localPos[2]; // Z-position for hit hits[4] = localTheta; // theta angle of incidence hits[5] = localPhi; // phi angle of incidence hits[8] = (Float_t) fNsdigits; // first sdigit hits[9] = -1; // last pad hit hits[13] = fFreonProd; // did id hit the freon? hits[14] = mom[0]; hits[15] = mom[1]; hits[16] = mom[2]; hits[18] = 0; // dummy cerenkov angle tlength = 0; eloss = 0; fFreonProd = 0; Chamber(idvol).LocaltoGlobal(localPos,hits+1); //To make chamber coordinates x-y had to pass localPos[0], localPos[2] xhit = localPos[0]; yhit = localPos[2]; // Only if not trigger chamber if(idvolAt(idvol)) ->SigGenInit(localPos[0], localPos[2], localPos[1]); } } // // Calculate the charge induced on a pad (disintegration) in case // // Mip left chamber ... if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){ gMC->SetMaxStep(kBig); eloss += destep; tlength += step; // Only if not trigger chamber if(idvol 0) { if(gMC->TrackPid() == kNeutron) printf("\n\n\n\n\n Neutron Making Pad Hit!!! \n\n\n\n"); hits[17] = Hits2SDigits(xhit,yhit,eloss,idvol,kMip); //for MIP } } hits[6]=tlength; hits[7]=eloss; if (fNsdigits > (Int_t)hits[8]) { hits[8]= hits[8]+1; hits[9]= (Float_t) fNsdigits; } //if(sector !=-1) new(lhits[fNhits++]) AliRICHhit(fIshunt,gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits); eloss = 0; // // Check additional signal generation conditions // defined by the segmentation // model (boundary crossing conditions) }else if(((AliRICHChamber*)fChambers->At(idvol))->SigGenCond(localPos[0], localPos[2], localPos[1])){ ((AliRICHChamber*)fChambers->At(idvol))->SigGenInit(localPos[0], localPos[2], localPos[1]); if (eloss > 0) { if(gMC->TrackPid() == kNeutron) printf("\n\n\n\n\n Neutron Making Pad Hit!!! \n\n\n\n"); hits[17] = Hits2SDigits(xhit,yhit,eloss,idvol,kMip);//for n } xhit = localPos[0]; yhit = localPos[2]; eloss = destep; tlength += step ; // // nothing special happened, add up energy loss } else { eloss += destep; tlength += step ; } }//is in GAP? }//is MIP? /*************************************************End of MIP treatment**************************************/ }//void AliRICHv3::StepManager() //__________________________________________________________________________________________________ Int_t AliRICHv3::Hits2SDigits(Float_t xhit,Float_t yhit,Float_t eloss, Int_t idvol, ResponseType res) {//calls the charge disintegration method of the current chamber and adds all generated sdigits to the list of digits Float_t newclust[4][500]; Int_t clhits[5]; Int_t iNdigits; clhits[0]=fNhits+1; ((AliRICHChamber*)fChambers->At(idvol))->DisIntegration(eloss, xhit, yhit, iNdigits,newclust, res); for (Int_t i=0; i 0) { clhits[1] = Int_t(newclust[0][i]);// Cluster Charge clhits[2] = Int_t(newclust[1][i]);// Pad: ix clhits[3] = Int_t(newclust[2][i]);// Pad: iy clhits[4] = Int_t(newclust[3][i]);// Pad: chamber sector AddSpecialOld(clhits); } } return iNdigits; }//Int_t AliRICHv3::Hits2SDigits(Float_t xhit,Float_t yhit,Float_t eloss, Int_t idvol, ResponseType res) //__________________________________________________________________________________________________