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diff --git a/src/Electron/CLAS6-EG2_Accepter.cxx b/src/Electron/CLAS6-EG2_Accepter.cxx
index 3b910ee..5f766c9 100644
--- a/src/Electron/CLAS6-EG2_Accepter.cxx
+++ b/src/Electron/CLAS6-EG2_Accepter.cxx
@@ -1,252 +1,258 @@
#include "ISmearcepter.h"
#include "TH3D.h"
#include "TRandom3.h"
#include <cstdlib>
// #define DEBUG_CLASACCEPT 1
struct EffMap {
TH3D *Generated;
TH3D *Accepted;
void Build(TFile *inpF, std::string const &GenName,
std::string const &AccName) {
Generated = dynamic_cast<TH3D *>(inpF->Get(GenName.c_str()));
Accepted = dynamic_cast<TH3D *>(inpF->Get(AccName.c_str()));
if (!Generated) {
std::cout << "[ERROR]: Could not retrieve \"accepted\" histogram: \""
<< AccName << "\" from file: \"" << inpF->GetName() << "\"."
<< std::endl;
exit(1);
}
if (!Accepted) {
std::cout << "[ERROR]: Could not retrieve \"generated\" histogram: \""
<< GenName << "\" from file: \"" << inpF->GetName() << "\"."
<< std::endl;
exit(1);
}
Generated = static_cast<TH3D *>(Generated->Clone());
Generated->SetDirectory(NULL);
Accepted = static_cast<TH3D *>(Accepted->Clone());
Accepted->SetDirectory(NULL);
}
- double GetAccRatio(double p_GeV, double costheta, double phi_deg) {
+ double GetAccRatio(double p_GeV, double costheta, double phi_deg,
+ double defaultAccRatio = 0) const {
// For a bin in phase space defined by p, cost, phi:
// Find number of generated events
Int_t pbin = Generated->GetXaxis()->FindBin(p_GeV);
Int_t tbin = Generated->GetYaxis()->FindBin(costheta);
Int_t phibin = Generated->GetZaxis()->FindBin(phi_deg);
if (((pbin == 0) || (pbin == (Generated->GetXaxis()->GetNbins() + 1))) ||
((tbin == 0) || (tbin == (Generated->GetYaxis()->GetNbins() + 1))) ||
((phibin == 0) ||
(phibin == (Generated->GetZaxis()->GetNbins() + 1)))) {
return 0;
}
double num_gen = Generated->GetBinContent(pbin, tbin, phibin);
+ if (num_gen == 0) {
+ return defaultAccRatio;
+ }
// Find number of accepted events
pbin = Accepted->GetXaxis()->FindBin(p_GeV);
tbin = Accepted->GetYaxis()->FindBin(costheta);
phibin = Accepted->GetZaxis()->FindBin(phi_deg);
double num_acc = Accepted->GetBinContent(pbin, tbin, phibin);
double acc_ratio = double(num_acc) / double(num_gen);
if (((pbin == 0) || (pbin == (Accepted->GetXaxis()->GetNbins() + 1))) ||
((tbin == 0) || (tbin == (Accepted->GetYaxis()->GetNbins() + 1))) ||
((phibin == 0) || (phibin == (Accepted->GetZaxis()->GetNbins() + 1)))) {
return 0;
}
if ((acc_ratio != 0 && !std::isnormal(acc_ratio)) || (acc_ratio > 1)) {
std::cout << "[BINS]: p " << Generated->GetXaxis()->GetBinLowEdge(1)
<< " -- "
<< Generated->GetXaxis()->GetBinUpEdge(
Generated->GetXaxis()->GetNbins())
<< ", cost " << Generated->GetYaxis()->GetBinLowEdge(1)
<< " -- "
<< Generated->GetYaxis()->GetBinUpEdge(
Generated->GetYaxis()->GetNbins())
<< ", phi " << Generated->GetZaxis()->GetBinLowEdge(1) << " -- "
<< Generated->GetZaxis()->GetBinUpEdge(
Generated->GetZaxis()->GetNbins())
<< ". " << std::endl
<< "[ERROR]: Bad acceptance ratio: " << acc_ratio << " = "
<< num_acc << " / " << num_gen << ". (" << p_GeV << ", "
<< costheta << ", " << phi_deg << ")." << std::endl;
exit(1);
}
return acc_ratio;
}
};
class CLASAccepter : public ISmearcepter {
TRandom3 rand;
// Maps a particle PDG to the relevant generated and accepted histograms from
// the input map.
std::map<int, EffMap> Acceptance;
+ double DefaultAccRatio;
- public:
- CLASAccepter() { ElementName = "CLASAccepter"; }
+public:
+ CLASAccepter() : DefaultAccRatio(0) { ElementName = "CLASAccepter"; }
void SpecifcSetup(nuiskey &nk) {
rand.~TRandom3();
new (&rand) TRandom3();
InstanceName = nk.GetS("name");
+ DefaultAccRatio = nk.GetD("DefaultAccRatio");
std::string const &mapfile = nk.GetS("map");
if (!mapfile.length()) {
std::cout << "[ERROR]: No input file specified by \"map\" attribute."
<< std::endl;
exit(1);
}
TFile *f = new TFile(mapfile.c_str());
if (!f || !f->IsOpen()) {
std::cout << "[ERROR]: Could not open root file specified by \"map\" "
"attribute: \""
<< mapfile << "\"" << std::endl;
exit(1);
}
std::vector<nuiskey> accepts = nk.GetListOfChildNodes("accept");
for (auto &acc : accepts) {
std::string const &genStr = acc.GetS("generated");
std::string const &accStr = acc.GetS("accepted");
if (!genStr.length() || !accStr.length()) {
std::cout << "[ERROR]: expected accept node to contain both "
"\"generated\" and \"accepted\" attributes."
<< std::endl;
exit(1);
}
std::string const &pdgs_s = acc.GetS("PDG");
std::vector<int> pdgs_i = GeneralUtils::ParseToInt(pdgs_s, ",");
if (!pdgs_i.size()) {
std::cout
<< "[ERROR]: Could not find any applicable particle PDG codes."
<< std::endl;
exit(1);
}
EffMap ef;
ef.Build(f, genStr, accStr);
for (size_t pdg_it = 0; pdg_it < pdgs_i.size(); ++pdg_it) {
if (Acceptance.count(pdgs_i[pdg_it])) {
std::cout
<< "[WARN]: Acceptance map already contains acceptance for PDG: "
<< pdgs_i[pdg_it] << ". Overwriting..." << std::endl;
}
Acceptance[pdgs_i[pdg_it]] = ef;
}
}
std::cout << "Loaded " << Acceptance.size()
<< " particle acceptance definitions." << std::endl;
f->Close();
delete f;
}
RecoInfo *Smearcept(FitEvent *fe) {
RecoInfo *ri = new RecoInfo();
for (size_t p_it = 0; p_it < fe->NParticles(); ++p_it) {
FitParticle *fp = fe->GetParticle(p_it);
int PDG = fp->PDG();
double p = fp->P3().Mag() * 1E-3;
double cost = fp->P3().CosTheta();
double phi = fp->P3().Phi() * (180.0 / TMath::Pi()) + 150.0;
#if DEBUG_CLASACCEPT > 1
std::cout << std::endl;
std::cout << "[" << p_it << "]: " << PDG << ", " << fp->Status() << ", "
<< fp->E() << " -- KE:" << fp->KE() << " Mom: " << p
<< std::flush;
#endif
if (fp->Status() != kFinalState) {
#if DEBUG_CLASACCEPT > 1
std::cout << " -- Not final state." << std::flush;
#endif
continue;
}
if (!Acceptance.count(PDG)) {
#if DEBUG_CLASACCEPT > 1
std::cout << " -- Unknown acceptance." << std::flush;
#endif
continue;
}
- EffMap eff = Acceptance[PDG];
+ EffMap const &eff = Acceptance[PDG];
- double acc_ratio = eff.GetAccRatio(p, cost, phi);
+ double acc_ratio = eff.GetAccRatio(p, cost, phi, DefaultAccRatio);
bool accepted = (rand.Uniform() < acc_ratio);
if (accepted) {
#ifdef DEBUG_CLASACCEPT
std::cout << "(" << p << ", " << cost << ", " << phi << ")."
<< std::endl;
std::cout << " -- Reconstructed with probability: " << acc_ratio
<< std::flush;
#endif
ri->RecObjMom.push_back(fp->P3());
ri->RecObjClass.push_back(fp->PDG());
continue;
}
#ifdef DEBUG_CLASACCEPT
std::cout << "(" << p << ", " << cost << ", " << phi << ")." << std::endl;
std::cout << " -- Rejected with probability: " << acc_ratio << std::flush;
#endif
}
#ifdef DEBUG_CLASACCEPT
std::cout << std::endl;
if (ri->RecObjMom.size()) {
std::cout << "Reconstructed " << ri->RecObjMom.size() << " particles. "
<< std::endl;
}
#endif
return ri;
}
double GetEfficiency(FitEvent *fe) {
double effweight = 1;
for (size_t p_it = 0; p_it < fe->NParticles(); ++p_it) {
FitParticle *fp = fe->GetParticle(p_it);
int PDG = fp->PDG();
double p = fp->P3().Mag() * 1E-3;
double cost = fp->P3().CosTheta();
double phi = fp->P3().Phi() * (180.0 / TMath::Pi()) + 150.0;
if (fp->Status() != kFinalState) {
continue;
}
if (!Acceptance.count(PDG)) {
continue;
}
EffMap eff = Acceptance[PDG];
effweight *= eff.GetAccRatio(p, cost, phi);
}
return effweight;
}
};

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