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#include "PamVMCNDDig.h" |
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#include <TRandom.h> |
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#include <TMath.h> |
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#define DEBUG 0 |
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using TMath::Log; |
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using TMath::Exp; |
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using TMath::Abs; |
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ClassImp(PamVMCNDDig) |
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void PamVMCNDDig::Digitize(){ |
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if(DEBUG) cout<<"Starting ND Digitization...."<<endl; |
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Int_t NdN = 0; |
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const Double_t Showercut = 10.e-6; // 10 us |
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const Double_t Window = 200.e-6; //200 us |
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const Double_t Tau = 17.e-6; // 17 us. Time when amplitude of signal reduce |
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// in e times |
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const Double_t SigmaTau = 4.e-6; //Sigma of fall time (obtained from |
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//Lebedev's oscillograms) |
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const Double_t Tresh = 130; //According Lebedev th = 130 mV |
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const Double_t keVtomV = Tresh/200.; //We suppose that 130 mV = 200 keV... everything linear |
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Double_t deadtime[36]; |
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Double_t Time,U, Uback; |
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Int_t pos; |
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for (Int_t i = 0; i<36; i++) deadtime[i] = Showercut; |
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TClonesArray * hc = (TClonesArray*)fhitscolmap.GetValue("NDTI"); |
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PamVMCDetectorHit * hit = 0; |
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PamVMCDetectorHit * hit1 = 0; |
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PamVMCDetectorHit *hit0 =0; |
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if(hc){ |
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Int_t HitsNum = hc->GetEntriesFast(); |
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//sorting by time and put results into vector fpHits |
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if (HitsNum > 1){ |
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for(Int_t i=0; i<hc->GetEntriesFast(); i++){ |
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Time = 0.; |
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for(Int_t j=0; j<hc->GetEntriesFast(); j++){ |
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hit = (PamVMCDetectorHit*)hc->At(j); |
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if((hit->GetTOF()>Time) && (!IsInsideVector(hit))){ |
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hit1 = hit; |
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Time = hit->GetTOF(); |
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} |
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} |
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fpHits.push_back(hit1); |
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} |
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} |
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//now we separate hits by tubes |
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for(Int_t i = fpHits.size()-1; i>=0; i--){ |
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hit = (PamVMCDetectorHit*)fpHits.at(i); |
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pos = hit->GetPOS()-1; |
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tubeHits[pos].push_back(hit); |
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} |
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fpHits.clear();// we don't need it |
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//From this moment all hits sorted by time and present in tubes |
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for(Int_t i = 0; i<NTUBES; i++){ |
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if( tubeHits[i].size() > 0 ){ |
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for(UInt_t j = 0; j<tubeHits[i].size(); j++){ |
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Uback = 0.; |
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hit =(PamVMCDetectorHit*)tubeHits[i].at(j); |
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U = keVtomV*(hit->GetEREL())*1.e6; //initial amplitude of this signal; |
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Time = hit->GetTOF(); |
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for(UInt_t k = 1; k<=j; k++){ |
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hit0 = (PamVMCDetectorHit*)tubeHits[i].at(k-1); |
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//hit1 = (PamVMCDetectorHit*)tubeHits[i].at(j); |
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if (tauHits[i].at(k-1)> 0) |
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Uback += keVtomV*(hit0->GetEREL())*1.e6*Exp((hit0->GetTOF()-/*hit1->GetTOF()*/hit->GetTOF())/Abs(tauHits[i].at(k-1))); |
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} |
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tauHits[i].push_back(frandom->Gaus(Tau,SigmaTau)); |
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if (DEBUG){ |
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cout<<"++++++HIT+++++++"<<endl; |
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cout<<"TubeNo="<<hit->GetPOS()<<endl |
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<<"Particle="<<((TParticlePDG*)(TDatabasePDG::Instance()->GetParticle(hit->GetPDG())))->GetName()<<endl |
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<<" Erel="<<hit->GetEREL()*1.0e6<<" (keV)"<<endl |
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<<" Time="<<hit->GetTOF()*1.e6<<" (us)"<<endl |
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<<" Patn="<<hit->GetPATH()*10.<<" (mm)"<<endl |
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<<" Tau="<<tauHits[i].at(j)*1.e6<<" (us)"<<endl |
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<<" U="<<U<<" (mV)"<<endl |
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<<" Uback="<<Uback<<" (mV)"<<endl; |
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if ((Uback < Tresh) && (U+Uback > Tresh) && (Time<Showercut+Window) && (Time>Showercut)) |
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cout<<" Particle detected as NEUTRON"<<endl; |
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} |
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if ((Uback < Tresh) && (U+Uback > Tresh) && (Time<Showercut+Window) && (Time>Showercut)) NdN++; |
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} |
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} |
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} |
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if(DEBUG) |
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cout<<"==== Total nuber of detected neutrons for for event ==="<<NdN<<" ==="<<endl; |
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} |
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//Cleaning of everything... |
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for (Int_t i = 0; i<NTUBES; i++){ |
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tauHits[i].clear(); |
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tubeHits[i].clear(); |
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} |
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fData.clear(); |
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if (DEBUG) cout<<"REGISTERED: "<< NdN <<" neutrons"<<endl; |
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for(Int_t i=0;i<3;i++){ |
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fData.push_back(0x0000); |
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fData.push_back(0x010F); |
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} |
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fData.at(0) = ((0xFF00 & (256*NdN))); |
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} |
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