/************************************************************************** * 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. * **************************************************************************/ /* $Id$ */ /////////////////////////////////////////////////////////////////////////////// // // // ZDC digitizer class // // // /////////////////////////////////////////////////////////////////////////////// #include // --- ROOT system #include #include #include #include // --- AliRoot header files #include "AliLog.h" #include "AliRun.h" #include "AliHeader.h" #include "AliGenHijingEventHeader.h" #include "AliRunDigitizer.h" #include "AliRunLoader.h" #include "AliCDBManager.h" #include "AliCDBEntry.h" #include "AliZDCSDigit.h" #include "AliZDCDigit.h" #include "AliZDCFragment.h" #include "AliZDCDigitizer.h" class AliCDBStorage; class AliZDCCalibData; ClassImp(AliZDCDigitizer) //____________________________________________________________________________ AliZDCDigitizer::AliZDCDigitizer() { // Default constructor } //____________________________________________________________________________ AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager): AliDigitizer(manager) { fIsCalibration=0; //By default the simulation doesn't create calib. data // Get calibration data fCalibData = GetCalibData(); if(fIsCalibration!=0) printf("\t **** AliZDCDigitizer -> Creating calibration data (pedestals)\n"); } //____________________________________________________________________________ AliZDCDigitizer::~AliZDCDigitizer() { // Destructor } //____________________________________________________________________________ AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer): AliDigitizer() { // Copy constructor for(Int_t i=0; i<6; i++){ for(Int_t j=0; j<5; j++){ fPMGain[i][j] = digitizer.fPMGain[i][j]; } } for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i]; fIsCalibration = digitizer.fIsCalibration; fCalibData = digitizer.fCalibData; } //____________________________________________________________________________ Bool_t AliZDCDigitizer::Init() { // Initialize the digitizer // NB -> PM gain vs. HV & ADC resolutions will move to DCDB *************** for(Int_t j = 0; j < 5; j++){ fPMGain[0][j] = 50000.; fPMGain[1][j] = 100000.; fPMGain[2][j] = 100000.; fPMGain[3][j] = 50000.; fPMGain[4][j] = 100000.; fPMGain[5][j] = 100000.; } // ADC Caen V965 fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh return kTRUE; } //____________________________________________________________________________ void AliZDCDigitizer::Exec(Option_t* /*option*/) { // Execute digitization Float_t pm[5][5]; // !!! 2nd ZDC set added (needed for trigger purposes!) // *** 1st 3 arrays are digits from REAL (simulated) hits // *** last 2 are copied from simulated digits // --- pm[0][...] = light in ZN right [C, Q1, Q2, Q3, Q4] // --- pm[1][...] = light in ZP right [C, Q1, Q2, Q3, Q4] // --- pm[2][...] = light in ZEM [x, 1, 2, x, x] // --- pm[3][...] = light in ZN left [C, Q1, Q2, Q3, Q4] ->NEW! // --- pm[4][...] = light in ZP left [C, Q1, Q2, Q3, Q4] ->NEW! for (Int_t iSector1=0; iSector1<5; iSector1++) for (Int_t iSector2=0; iSector2<5; iSector2++){ pm[iSector1][iSector2] = 0; } // impact parameter and number of spectators Float_t impPar = -1; Int_t specN = 0; Int_t specP = 0; // loop over input streams for (Int_t iInput = 0; iInputGetNinputs(); iInput++){ // get run loader and ZDC loader AliRunLoader* runLoader = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput)); AliLoader* loader = runLoader->GetLoader("ZDCLoader"); if (!loader) continue; // load sdigits loader->LoadSDigits(); TTree* treeS = loader->TreeS(); if (!treeS) continue; AliZDCSDigit sdigit; AliZDCSDigit* psdigit = &sdigit; treeS->SetBranchAddress("ZDC", &psdigit); // loop over sdigits for (Int_t iSDigit=0; iSDigitGetEntries(); iSDigit++){ treeS->GetEntry(iSDigit); // if (!psdigit) continue; if ((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){ AliError(Form("\nsector[0] = %d, sector[1] = %d\n", sdigit.GetSector(0), sdigit.GetSector(1))); continue; } // pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM(); /*printf("\n\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n", sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1, sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]); // Chiara debugging! */ } loader->UnloadSDigits(); // get the impact parameter and the number of spectators in case of hijing if (!runLoader->GetAliRun()) runLoader->LoadgAlice(); AliHeader* header = runLoader->GetAliRun()->GetHeader(); if (!header) continue; AliGenEventHeader* genHeader = header->GenEventHeader(); if (!genHeader) continue; if (!genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) continue; impPar = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter(); // specN = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn(); specP = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp(); AliDebug(2, Form("\n AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n", impPar, specN, specP)); printf("\n\t AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n", impPar, specN, specP); } // add spectators if (impPar >= 0) { Int_t freeSpecN, freeSpecP; Fragmentation(impPar, specN, specP, freeSpecN, freeSpecP); printf("\n\t AliZDCDigitizer ---- Adding signal for %d free spectator n\n",freeSpecN); SpectatorSignal(1, freeSpecN, pm); printf("\t AliZDCDigitizer ---- Adding signal for %d free spectator p\n\n",freeSpecP); SpectatorSignal(2, freeSpecP, pm); } // get the output run loader and loader AliRunLoader* runLoader = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName()); AliLoader* loader = runLoader->GetLoader("ZDCLoader"); if (!loader) { AliError("no ZDC loader found"); return; } // create the output tree const char* mode = "update"; if (runLoader->GetEventNumber() == 0) mode = "recreate"; loader->LoadDigits(mode); loader->MakeTree("D"); TTree* treeD = loader->TreeD(); AliZDCDigit digit; AliZDCDigit* pdigit = &digit; const Int_t kBufferSize = 4000; treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize); // Create digits Int_t sector[2], sectorL[2]; Int_t digi[2], digiL[2]; for(sector[0]=1; sector[0]<=3; sector[0]++){ for(sector[1]=0; sector[1]<5; sector[1]++){ if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue; for (Int_t res=0; res<2; res++){ digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res) + Pedestal(sector[0], sector[1], res); } /*printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n", sector[0], sector[1], digi[0], digi[1]); // Chiara debugging! */ // new(pdigit) AliZDCDigit(sector, digi); treeD->Fill(); // // --- Adding digits for 2nd ZDC set (left side w.r.t. IP) --- // --- they are copied from right ZDC digits if(sector[0]==1 || sector[0]==2){ sectorL[0] = sector[0]+3; sectorL[1] = sector[1]; for (Int_t res=0; res<2; res++){ digiL[res] = Phe2ADCch(sectorL[0], sectorL[1], pm[sector[0]-1][sector[1]], res) + Pedestal(sectorL[0], sectorL[1], res); } /*printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n", sectorL[0], sectorL[1], digiL[0], digiL[1]); // Chiara debugging! */ // new(pdigit) AliZDCDigit(sectorL, digiL); treeD->Fill(); } // //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries()); } } // write the output tree loader->WriteDigits("OVERWRITE"); loader->UnloadDigits(); } //_____________________________________________________________________________ void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP, Int_t &freeSpecN, Int_t &freeSpecP) const { // simulate fragmentation of spectators Int_t zz[100], nn[100]; AliZDCFragment frag(impPar); for (Int_t j=0; j<=99; j++){ zz[j] =0; nn[j] =0; } // Fragments generation Int_t nAlpha; frag.GenerateIMF(zz, nAlpha); // Attach neutrons Int_t ztot=0; Int_t ntot=0; frag.AttachNeutrons(zz, nn, ztot, ntot); freeSpecN = specN-ntot-2*nAlpha; freeSpecP = specP-ztot-2*nAlpha; if(freeSpecN<0) freeSpecN=0; if(freeSpecP<0) freeSpecP=0; AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP)); } //_____________________________________________________________________________ void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents, Float_t pm[3][5]) const { // add signal of the spectators TFile* file = NULL; if (SpecType == 1) { // --- Signal for spectator neutrons file = TFile::Open("$ALICE/$ALICE_LEVEL/ZDC/ZNsignalntu.root"); } else if (SpecType == 2) { // --- Signal for spectator protons file = TFile::Open("$ALICE/$ALICE_LEVEL/ZDC/ZPsignalntu.root"); } if (!file || !file->IsOpen()) { AliError("Opening of file failed"); return; } TNtuple* zdcSignal = (TNtuple*) file->Get("ZDCSignal"); Int_t nentries = (Int_t) zdcSignal->GetEntries(); Float_t *entry, hitsSpec[7]; Int_t pl, i, j, k, iev=0, rnd[125], volume[2]; for(pl=0;pl<125;pl++) rnd[pl] = 0; if (numEvents > 125) { AliWarning(Form("numEvents (%d) is larger than 125", numEvents)); numEvents = 125; } for(pl=0;plRndm()); if(rnd[pl] >= 9999) rnd[pl] = 9998; //printf(" rnd[%d] = %d\n",pl,rnd[pl]); } // Sorting vector in ascending order with C function QSORT qsort((void*)rnd,numEvents,sizeof(Int_t),comp); do{ for(i=0; iGetEvent(i); entry = zdcSignal->GetArgs(); if(entry[0] == rnd[iev]){ for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1]; for(j=0; j<7; j++) hitsSpec[j] = entry[j+3]; // Float_t lightQ = hitsSpec[4]; Float_t lightC = hitsSpec[5]; AliDebug(3, Form("SpectatorSignal -> vol = (%d, %d), lightQ = %.0f, lightC = %.0f", volume[0], volume[1], lightQ, lightC)); //printf("\n Volume = (%d, %d), lightQ = %.0f, lightC = %.0f", // volume[0], volume[1], lightQ, lightC); if (volume[0] < 3) { // ZN or ZP pm[volume[0]-1][0] += lightC; pm[volume[0]-1][volume[1]] += lightQ; //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0], // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]); } else { if (volume[1] == 1) pm[2][1] += lightC; // ZEM 1 else pm[2][2] += lightQ; // ZEM 2 //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]); } } else if(entry[0] > rnd[iev]){ iev++; continue; } } }while(ievClose(); delete file; } //_____________________________________________________________________________ Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light, Int_t Res) const { // Evaluation of the ADC channel corresponding to the light yield Light Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]); //printf("\t Phe2ADCch -> det %d quad %d - phe %.0f ADC %d\n", Det,Quad,Light,ADCch); return vADCch; } //_____________________________________________________________________________ Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const { // Returns a pedestal for detector det, PM quad, channel with res. // Float_t PedValue; // Normal run if(fIsCalibration == 0){ Float_t meanPed, Pedwidth; Int_t index=0; if(Det==1|| Det==2) index = 10*(Det-1)+Quad+5*Res; // ZN1, ZP1 else if(Det==3) index = 10*(Det-1)+(Quad-1)+Res; // ZEM else if(Det==4|| Det==5) index = 10*(Det-2)+Quad+5*Res+4; // ZN2, ZP2 meanPed = fCalibData->GetMeanPed(index); Pedwidth = fCalibData->GetMeanPedWidth(index); PedValue = gRandom->Gaus(meanPed,Pedwidth); // /*printf("\t Pedestal -> det = %d, quad = %d, res = %d - Ped[%d] = %d\n", Det, Quad, index,(Int_t) PedValue); // Chiara debugging! */ } // To create calibration object else PedValue = gRandom->Gaus((40.+10.*gRandom->Rndm()),5.); return (Int_t) PedValue; } //_____________________________________________________________________________ AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri) { Bool_t deleteManager = kFALSE; AliCDBManager *manager = AliCDBManager::Instance(); AliCDBStorage *defstorage = manager->GetDefaultStorage(); if(!defstorage || !(defstorage->Contains("ZDC"))){ AliWarning("No default storage set or default storage doesn't contain ZDC!"); manager->SetDefaultStorage(uri); deleteManager = kTRUE; } AliCDBStorage *storage = manager->GetDefaultStorage(); if(deleteManager){ AliCDBManager::Instance()->UnsetDefaultStorage(); defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy() } return storage; } //_____________________________________________________________________________ AliZDCCalibData* AliZDCDigitizer::GetCalibData() const { // Getting calibration object for ZDC set AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Data"); AliZDCCalibData *calibdata = (AliZDCCalibData*) entry->GetObject(); if (!calibdata) AliWarning("No calibration data from calibration database !"); return calibdata; }