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MCSAnalysis.cpp
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#include "MCSAnalysis.h"
// #include "TVirtualFFT.h"
MCSAnalysis::MCSAnalysis(std::string tree, std::string mctree, std::string outname, std::map<std::string, double> histlimits)
//: p_vec(TVectorD(19)), res(TVectorD(30)), pStart_vec(TVectorD(19)),
// pStart_vec_y(TVectorD(19)), theta_true_x(TVectorD(19)), theta_true_y(TVectorD(19))
{
chain = new TChain(tree.c_str());
mcchain = new TChain(mctree.c_str());
outfile = new TFile(outname.c_str(), "recreate");
_sys["alXUS"] = 0.0; //-0.0356;
_sys["alYUS"] = 0.0; //1.13;
_sys["alXDS"] = 0.0; //-0.126;
_sys["alYDS"] = 0.0; //0.118;
_sys["thXUS"] = 0.0; //-0.0031;
_sys["thYUS"] = 0.0; //-0.005;
_sys["thXDS"] = 0.0; //-0.003;
_sys["thYDS"] = 0.0; //-0.0151;
_sys["resX"] = 1.0;
_sys["resY"] = 1.0;
_sys["psel_lcut"] = -1.;
_sys["psel_ucut"] = -1.;
_sys["TOF0_z"] = 5287.24720607;
_sys["TOF1_z"] = 12929.2608098;
_sys["TOF2_z"] = 21138.306769;
_sys["niter"] = 10;
_sys["abspos"] = 16952.5;
_sys["Nevents"] = -1.;
_sys["FracEvents"] = 1.;
modelname1 = "Cobb";
modelname2 = "GEANT";
_histlimits["NbinsXY"] = histlimits.count("NbinsXY") != 0 ? histlimits["NbinsXY"]: 200;
_histlimits["minXY"] = histlimits.count("minXY") != 0 ? histlimits["minXY"]: -0.2;
_histlimits["maxXY"] = histlimits.count("maxXY") != 0 ? histlimits["maxXY"]: 0.2;
_histlimits["NbinsTh"] = histlimits.count("NbinsTh") != 0 ? histlimits["NbinsTh"]: 100;
_histlimits["minTh"] = histlimits.count("minTh") != 0 ? histlimits["minTh"]: 0.0;
_histlimits["maxTh"] = histlimits.count("maxTh") != 0 ? histlimits["maxTh"]: 0.2;
_histlimits["NbinsTh2"] = histlimits.count("NbinsTh2") != 0 ? histlimits["NbinsTh2"]: 400;
_histlimits["minTh2"] = histlimits.count("minTh2") != 0 ? histlimits["minTh2"]: 0.0;
_histlimits["maxTh2"] = histlimits.count("maxTh2") != 0 ? histlimits["maxTh2"]: 0.004;
resp_thetaX.Setup(_histlimits["NbinsXY"], _histlimits["minXY"], _histlimits["maxXY"]);
resp_thetaY.Setup(_histlimits["NbinsXY"], _histlimits["minXY"], _histlimits["maxXY"]);
resp_thetaScatt.Setup(_histlimits["NbinsTh"], _histlimits["minTh"], _histlimits["maxTh"]);
resp_theta2Scatt.Setup(_histlimits["NbinsTh2"], _histlimits["minTh2"], _histlimits["maxTh2"]);
tresp_thetaX.Setup(_histlimits["NbinsXY"], _histlimits["minXY"], _histlimits["maxXY"]);
tresp_thetaY.Setup(_histlimits["NbinsXY"], _histlimits["minXY"], _histlimits["maxXY"]);
tresp_thetaScatt.Setup(_histlimits["NbinsTh"], _histlimits["minTh"], _histlimits["maxTh"]);
tresp_theta2Scatt.Setup(_histlimits["NbinsTh2"], _histlimits["minTh2"], _histlimits["maxTh2"]);
const int NBINS = 19;
const int NPBINS = 30;
double scat_bin_array[NBINS+1] =
{-0.1151, -0.0938, -0.0754, -0.0597, -0.0463,
-0.0347, -0.0248, -0.0162, -0.00895, -0.00269,
0.00269, 0.00895, 0.0162, 0.0248, 0.0347,
0.0463, 0.0597, 0.0754, 0.0938, 0.1151};
double pos_array[NPBINS+1];
for(int i=0; i<NPBINS+1; i++) pos_array[i] = -100 + (6.67 * i);
runnumber = 0;
LastRunNumber = 0;
tofevent = new MAUS::TOFEvent();
scifievent = new MAUS::SciFiEvent();
klevent = new MAUS::KLEvent();
ckovevent = new MAUS::CkovEvent();
emrevent = new MAUS::EMREvent();
mcevent = new MAUS::MCEvent();
primary = new MAUS::Primary();
sphitarray = new MAUS::SpecialVirtualHitArray();
// set some default values that may be adjusted later.
TOF_lower_limit = 27;
TOF_upper_limit = 28;
meanp = 300.0;
sigmap = 0.035;
binlimit = 22;
int counter = 0;
// histograms of selection variables
t_cor = new TH2D("t_cor","t_cor", 1000, 0, 1000,100, 8.05, 9.15);
tof10 = new TH1D("tof10","TOF Between Stations 1 and 0; t_{TOF1} - t_{TOF0} (ns)", 150, 10, 40);
tof10_sel = new TH1D("tof10_sel","TOF Selection Between Stations 1 and 0; t_{TOF1} - t_{TOF0} (ns)", 150, 10, 40);
tof21 = new TH1D("tof21","TOF Between Stations 2 and 1; t_{TOF2} - t_{TOF1} (ns)", 150, 0, 50);
tof21_sel = new TH1D("tof21_sel","TOF Selection Between Stations 2 and 1; t_{TOF2} - t_{TOF1} (ns)", 150, 0, 50);
mctof10 = new TH1D("mctof10","TOF Between Stations 1 and 0; t_{TOF1} - t_{TOF0} (ns)", 150, 10, 40);
mctof10_sel = new TH1D("mctof10_sel","TOF Selection Between Stations 1 and 0; t_{TOF1} - t_{TOF0} (ns)", 150, 10, 40);
mctof21 = new TH1D("mctof21","TOF Between Stations 2 and 1; t_{TOF2} - t_{TOF1} (ns)", 150, 0, 50);
mctof21_sel = new TH1D("mctof21_sel","TOF Selection Between Stations 2 and 1; t_{TOF2} - t_{TOF1} (ns)", 150, 0, 50);
calc_mom = new TH1D("calc_mom","Momentum Calculated from TOF; Momentum (MeV/c)", 400, 0, 400);
cor_mom = new TH1D("cor_mom","Cor Momentum Calculated from TOF; Momentum (MeV/c)", 400, 0, 400);
mccalc_mom = new TH1D("mccalc_mom","Momentum Calculated from TOF; Momentum (MeV/c)", 400, 0, 400);
mctrue_mom = new TH1D("mctrue_mom","Momentum from Virtual Planes; Momentum (MeV/c)", 400, 0, 400);
cuts_accept = new TH1D("cuts_accept",
";Selection Criteria; Surviving Events", 5, 0, 5);
mccuts_accept = new TH1D("mccuts_accept",
";Selection Criteria; Surviving Events", 6, 0, 6);
scattering_pos_x =
new TH1D("scattering_pos_x",
"Change in Position (X);#Delta X; Events per mm",
NBINS, scat_bin_array);
scattering_pos_y =
new TH1D("scattering_pos_y",
"Change in Position (Y);#Delta Y; Events per mm",
NBINS, scat_bin_array);
theta_true_x_graph =
new TH1D("theta_true_x_graph",
"Change in Projected Angle (X);#Delta#theta_{X}; Events per radian",
NBINS, scat_bin_array);
theta_true_y_graph =
new TH1D("theta_true_y_graph",
"Change in Projected Angle (Y);#Delta#theta_{Y}; Events per radian",
NBINS, scat_bin_array);
scattering_proj_x_resp =
new TH2D("scattering_proj_x_resp",
"Change in Projected Angle (X);#Delta#theta^{Measured}_{X}; #Delta#theta^{True}_{X}",
NBINS, scat_bin_array, NBINS, scat_bin_array);
scattering_proj_y_resp =
new TH2D("scattering_proj_y_resp",
"Change in Projected Angle (Y);#Delta#theta^{Measured}_{Y}; #Delta#theta^{True}_{Y}",
NBINS, scat_bin_array, NBINS, scat_bin_array);
scattering_proj_x_R =
new TH2D("scattering_proj_x_R",
"Change in Projected Angle (X);#Delta#theta^{Measured}_{X}; #Delta#theta^{True}_{Y}",
NPBINS, pos_array, NBINS, scat_bin_array);
scattering_proj_y_R =
new TH2D("scattering_proj_y_R",
"Change in Projected Angle (Y);#Delta#theta^{Measured}_{Y}; #Delta#theta^{True}_{X}",
NPBINS, pos_array, NBINS, scat_bin_array);
theta_meas_x_graph =
new TH1D("theta_meas_x_graph","Accepted Events;#Delta#theta^{True}_X",
NBINS, scat_bin_array);
theta_meas_y_graph =
new TH1D("theta_meas_y_graph","Accepted Events;#Delta#theta^{True}_Y",
NBINS, scat_bin_array);
jUS=-1;
jDS=-1;
kUS=-1;
kDS=-1;
USrefplaneI = -1;
DSrefplaneI = -1;
USrefplaneZ = 0.;
DSrefplaneZ = 0.;
USabsPlaneI = -1;
DSabsPlaneI = -1;
}
MCSAnalysis::~MCSAnalysis(){
delete chain;
delete mcchain;
// delete tof10;
// delete tof21;
// delete tof10_sel;
// delete tof21_sel;
// delete calc_mom;
}
void MCSAnalysis::Write(){
outfile->cd();
tof10->Write();
tof21->Write();
tof10_sel->Write();
tof21_sel->Write();
calc_mom->Write();
TCanvas *c1 = new TCanvas();
calc_mom->GetXaxis()->SetRangeUser(120,280);
calc_mom->Draw();
cor_mom->SetLineColor(2);
cor_mom->Draw("SAME");
c1->SaveAs("calc_mom.pdf");
cor_mom->Write();
c1->Clear();
calc_mom->GetXaxis()->SetRangeUser(120,280);
cor_mom->Draw();
c1->SaveAs("cor_mom.pdf");
mctof10->Write();
mctof21->Write();
mctof10_sel->Write();
mctof21_sel->Write();
mccalc_mom->Write();
mctrue_mom->Write();
cuts_accept->Write();
mccuts_accept->Write();
//outfile->Close();
delete c1;
}
void MCSAnalysis::Execute(int mode=0){
int verbose_level = 1;
// MAUS::GlobalsManager::InitialiseGlobals(JsonWrapper::JsonToString(SetupConfig(verbose_level)));
dataSelection();
if (mode == 0){
generateMCSResponse();
// DoUnfolding();
DoDeconvolution(modelname2.c_str(), 1);
}
else if (mode >= 1){
referenceSelection();
DoUnfolding();
DoFFTDeconvolution();
ConvolveWithInputDistribution(modelname1.c_str());
DoDeconvolution(modelname1.c_str(), 1);
ConvolveWithInputDistribution(modelname2.c_str());
DoDeconvolution(modelname2.c_str(), 1);
//FitGaussian(outfilename.c_str());
//CalculateChi2(outfilename.c_str(), modelname2.c_str());
//Write();
}
/* else if (mode > 1){
referenceSelection();
ConvolveWithInputDistribution(modelname1.c_str());
DoDeconvolution(modelname1.c_str(), mode);
} */
else {
std::cout<<"Unknown operation mode"<<std::endl;
}
}
void MCSAnalysis::dataSelection(){
// Set addresses for tree selection
chain->SetBranchAddress("RunNumber", &runnumber);
chain->SetBranchAddress("TOFBranch", &tofevent);
chain->SetBranchAddress("SciFiBranch", &scifievent);
chain->SetBranchAddress("CkovBranch", &ckovevent);
chain->SetBranchAddress("KLBranch", &klevent);
chain->SetBranchAddress("EMRBranch", &emrevent);
// Restrict the number of entries to less than or equal to the mcchain entries
int Nentries = chain->GetEntries();
// < mcchain->GetEntries() ?
// chain->GetEntries() : mcchain->GetEntries();
// Loop over all tree entries.
Collection USAllTOF, DSAllTOF, USPreRadSel, DSPreRadSel;
double pz = 0.;
int Nevents = 0;
// Nentries *= int(_sys["FracEvents"]) > 0 ? _sys["FracEvents"] : 1.0;
for (int i=0; i<Nentries; i++){
chain->GetEntry(i);
if (i%100000==0) std::cout<<"Event "<<i<<"\n";
// Set cuts based on the TOFs, ckov, kl, and EMR information
// Locate the tracker reference planes. To be agnostic locate
// the downstream most station of the upstream tracker and the
// upstream most station of the downstream tracker.
cuts_accept->Fill("All Events",1);
// if (scifievent->scifitracks().size() != 2) continue;
// if ( !SelectMomentum() ) continue;
if ( !MatchUSDS() ) {
if (jUS == -1 || kUS == -1){
continue;
}
}
cuts_accept->Fill("US Track Found",1);
FillCollectionSciFi(USAllTOF, jUS, kUS, pz, 0);
FillCollectionSciFi(DSAllTOF, jDS, kDS, pz, 1);
if ( !PIDSelection(true) ) continue;
pz = MomentumFromTOF(true);
cuts_accept->Fill("TOF Selection",1);
FillCollectionSciFi(USPreRadSel, jUS, kUS, pz, 0);
FillCollectionSciFi(DSPreRadSel, jDS, kDS, pz, 1);
if ( !RadialSelection(pz) ) continue;
cuts_accept->Fill("Fiducial Selection",1);
if (jDS != -1 && kDS != -1) {
double pz_cor = CorMomFromTOF(pz);
}
if ( _sys["psel_lcut"] > 0 && _sys["psel_ucut"] > 0 ){
if ( pz < _sys["psel_lcut"] || pz > _sys["psel_ucut"] )
// Cut out events to evaluate systematic uncertainties.
continue;
}
Nevents++;
//
if(_sys["Nevents"] > 0 && Nevents > int(_sys["Nevents"]))
break;
FillCollectionSciFi(_USset, jUS, kUS, pz, 0);
FillCollectionSciFi(_DSset, jDS, kDS, pz, 1);
FillCollectionSciFi(_UStmpset, jUS, kUS, pz, 0);
if (runnumber != LastRunNumber){
UpdateRunInfo();
}
}
make_beam_histograms(USAllTOF, "Upstream, Data", "dataUS_alltof");
make_beam_histograms(DSAllTOF, "Downstream, Data", "dataDS_alltof");
make_acceptance_histograms(USAllTOF, DSAllTOF,
"Data Projection", "dataAcc_alltof");
make_beam_histograms(USPreRadSel, "Upstream, Data", "dataUS_prerad");
make_beam_histograms(DSPreRadSel, "Downstream, Data", "dataDS_prerad");
make_beam_histograms(_USset, "Upstream, Data", "dataUS");
make_beam_histograms(_DSset, "Downstream, Data", "dataDS");
make_acceptance_histograms(_USset, _DSset, "Data Projection", "dataAcc");
PlotRunInfo();
}
void MCSAnalysis::referenceSelection(){
// Set addresses for tree selection
mcchain->SetBranchAddress("TOFBranch", &tofevent);
mcchain->SetBranchAddress("SciFiBranch", &scifievent);
mcchain->SetBranchAddress("CkovBranch", &ckovevent);
mcchain->SetBranchAddress("KLBranch", &klevent);
mcchain->SetBranchAddress("EMRBranch", &emrevent);
// Restrict the number of entries to less than or equal to the mcchain entries
int Nentries = mcchain->GetEntries();
// < mcchain->GetEntries() ?
// chain->GetEntries() : mcchain->GetEntries();
Collection USAllTOF, DSAllTOF, USPreRadSel, DSPreRadSel;
double pz = 0.;
// Loop over all tree entries.
for (int i=0; i<Nentries; i++){
mcchain->GetEntry(i);
if (i%100000==0) std::cout<<"Event "<<i<<"\n";
// Set cuts based on the TOFs, ckov, kl, and EMR information
// Locate the tracker reference planes. To be agnostic locate
// the downstream most station of the upstream tracker and the
//// upstream most station of the downstream tracker.
cuts_accept->Fill("All Events",1);
if ( !MatchUSDS() ) {
if (jUS == -1 || kUS == -1){
continue;
}
}
cuts_accept->Fill("US Track Found",1);
FillCollectionSciFi(USAllTOF, jUS, kUS, pz, 0);
FillCollectionSciFi(DSAllTOF, jDS, kDS, pz, 1);
if ( !PIDSelection(false) ) continue;
cuts_accept->Fill("TOF Selection",1);
pz = MomentumFromTOF(false);
// if (scifievent->scifitracks().size() != 2) continue;
// if ( !SelectMomentum() ) continue;
FillCollectionSciFi(USPreRadSel, jUS, kUS, pz, 0);
FillCollectionSciFi(DSPreRadSel, jDS, kDS, pz, 1);
if ( !RadialSelection(pz) ) continue;
cuts_accept->Fill("Fiducial Selection",1);
FillCollectionSciFi(_USMCset, jUS, kUS, pz, 0);
FillCollectionSciFi(_DSMCset, jDS, kDS, pz, 1);
}
make_beam_histograms(USAllTOF, "Upstream, Data Reference", "dataUSref_alltof");
make_beam_histograms(DSAllTOF, "Downstream, Data Reference", "dataDSref_alltof");
make_acceptance_histograms(USAllTOF, DSAllTOF, "Data Reference", "dataProj_alltof");
make_beam_histograms(USPreRadSel, "Upstream, Data Reference", "dataUSref_prerad");
make_beam_histograms(DSPreRadSel, "Downstream, Data Reference", "dataDSref_prerad");
make_acceptance_histograms(USPreRadSel, DSPreRadSel, "Data Reference", "dataProj_prerad");
make_beam_histograms(_USMCset, "Upstream, Data Reference", "dataUSref");
make_beam_histograms(_DSMCset, "Downstream, Data Reference", "dataDSref");
make_acceptance_histograms(_USMCset, _DSMCset, "Data Reference", "dataProj");
}
void MCSAnalysis::generateMCSResponse(){
mcchain->SetBranchAddress("TOFBranch", &tofevent);
mcchain->SetBranchAddress("SciFiBranch", &scifievent);
mcchain->SetBranchAddress("CkovBranch", &ckovevent);
mcchain->SetBranchAddress("KLBranch", &klevent);
mcchain->SetBranchAddress("EMRBranch", &emrevent);
mcchain->SetBranchAddress("MCEvent", &mcevent);
// Loop over the training sample.
Collection USRecSet, DSRecSet, USVirtSet, DSVirtSet;
Collection USAllTOF, DSAllTOF, USPreRadSel, DSPreRadSel;
Collection USVAllTOF, DSVAllTOF, USVPreRadSel, DSVPreRadSel;
// Collection USeRecSet, DSeRecSet, USmuRecSet, DSmuRecSet;
int nMuAbsSel=0, nEAbsSel=0, nMuAbsAll=0, nEAbsAll=0;
TH1D* mom_resUS = new TH1D("mom_resUS", ";p_{rec} - p_{MC} (MeV/c)",
2000, -100, 100);
TH1D* mom_resDS = new TH1D("mom_resDS", ";p_{rec} - p_{MC} (MeV/c)",
2000, -100, 100);
TH2D* mom_responseUS = new TH2D("mom_responseUS", ";p_{rec} (MeV/c); p_{MC} (MeV/c)",
300, 0, 300, 300, 0, 300);
TH2D* mom_responseDS = new TH2D("mom_responseDS", ";p_{rec} (MeV/c); p_{MC} (MeV/c)",
300, 100, 300, 300, 0, 300);
TH2D* mom_responseABS = new TH2D("mom_responseABS", ";p_{rec} (MeV/c); p_{MC} (MeV/c)",
300, 100, 300, 300, 0, 300);
int ngood=0;
for (int j=0; j<mcchain->GetEntries(); j++){
mcchain->GetEntry(j);
if (j%100000==0) std::cout<<"MC Event "<<j<<", selected "<<ngood<<" events.\n";
// if(fabs(mcevent->GetPrimary()->GetParticleId()) != 13) continue;
// Select events that produce virtual plane hits and pass the data selection cuts.
Vars USAbsHit, DSAbsHit, USTrackerRefHit, DSTrackerRefHit;
double pz = 0.;
mccuts_accept->Fill("All Events",1);
if ( !PIDSelection(false) ) continue; // event_ok=false;
if( !findVirtualPlanes() ) continue;
mccuts_accept->Fill("Found Virtual Planes",1);
FillVarsVirtual(USAbsHit, USabsPlaneI);
FillVarsVirtual(DSAbsHit, DSabsPlaneI);
FillVarsVirtual(USTrackerRefHit, USrefplaneI);
FillVarsVirtual(DSTrackerRefHit, DSrefplaneI);
if (mcevent->GetVirtualHits()->at(USrefplaneI).GetParticleId()==-13 &&
mcevent->GetVirtualHits()->at(DSrefplaneI).GetParticleId()==-11)
nEAbsAll++;
if (mcevent->GetVirtualHits()->at(USrefplaneI).GetParticleId()==-13)
nMuAbsAll++;
// Apply selection cuts as with the data
bool event_ok=true;
if ( !MatchUSDS() ) {
if (jUS == -1 || kUS == -1){
cuts_accept->Fill("US Tracker Found", 1);
event_ok=false;
}
}
if (event_ok) mccuts_accept->Fill("US Track Found",1);
if (event_ok) pz = MomentumFromTOF(false);
if (event_ok) mccuts_accept->Fill("TOF Selection",1);
// if (scifievent->scifitracks().size() != 2) continue;
FillCollectionSciFi(USPreRadSel, jUS, kUS, pz, 0);
FillCollectionSciFi(DSPreRadSel, jDS, kDS, pz, 1);
USVPreRadSel.append_instance(USAbsHit);
DSVPreRadSel.append_instance(DSAbsHit);
if ( !RadialSelection(pz) ) event_ok=false;
if (event_ok) mccuts_accept->Fill("Fiducial Selection",1);
if (event_ok) mctrue_mom->Fill(mcevent->GetVirtualHits()->at(USrefplaneI).GetMomentum().z());
Vars USSciFiRec, DSSciFiRec;
if (event_ok){
FillVarsSciFi(USSciFiRec, jUS, kUS, pz, 0);
FillVarsSciFi(DSSciFiRec, jDS, kDS, pz, 1);
USRecSet.append_instance(USSciFiRec);
DSRecSet.append_instance(DSSciFiRec);
if (mcevent->GetVirtualHits()->at(USrefplaneI).GetParticleId()==-13 &&
mcevent->GetVirtualHits()->at(USrefplaneI).GetParticleId()==-11)
nEAbsSel++;
if (mcevent->GetVirtualHits()->at(USrefplaneI).GetParticleId()==-13)
nMuAbsSel++;
mom_resUS->Fill(USSciFiRec.pz - USTrackerRefHit.pz);
mom_resDS->Fill(DSSciFiRec.pz - DSTrackerRefHit.pz);
mom_responseUS->Fill(USSciFiRec.pz, USTrackerRefHit.pz);
mom_responseDS->Fill(DSSciFiRec.pz, DSTrackerRefHit.pz);
mom_responseABS->Fill(DSSciFiRec.pz, USAbsHit.pz);
}
USVirtSet.append_instance(USAbsHit);
DSVirtSet.append_instance(DSAbsHit);
FillMCSResponse(event_ok, USSciFiRec, DSSciFiRec, USAbsHit, DSAbsHit);
FillMuScattResponse(event_ok, USSciFiRec, DSSciFiRec, USAbsHit, DSAbsHit);
ngood++;
}
std::cout<<"For all events simulated there are "<<nEAbsAll<<" decay electrons and "<<nMuAbsAll<<" muons.\n";
std::cout<<"For the selected MC events there are "<<nEAbsSel<<" decay electrons and "<<nMuAbsSel<<" muons.\n";
make_beam_histograms(USVirtSet, "Upstream, Data", "VirtMCUS");
make_beam_histograms(DSVirtSet, "Downstream, Data", "VirtMCDS");
//make_beam_histograms(USAllTOF, "Upstream, Reconstructed Simulation", "recMCUS_alltof");
//make_beam_histograms(DSAllTOF, "Downstream, Reconstructed Simulation", "recMCDS_alltof");
make_beam_histograms(USPreRadSel, "Upstream, Reconstructed Simulation", "recMCUS_prerad");
make_beam_histograms(DSPreRadSel, "Downstream, Reconstructed Simulation", "recMCDS_prerad");
make_scattering_acceptance_histograms(USVPreRadSel,
DSVPreRadSel, DSPreRadSel,
"Virtual Projection","VirtPreRad");
make_beam_histograms(USRecSet, "Upstream, Reconstructed Simulation", "recMCUS");
make_beam_histograms(DSRecSet, "Downstream, Reconstructed Simulation", "recMCDS");
make_scattering_acceptance_histograms(USVirtSet,
DSVirtSet,DSRecSet,
"Virtual Projection","VirtProj");
mom_resUS->Write();
mom_resDS->Write();
mom_responseUS->Write();
mom_responseDS->Write();
mom_responseABS->Write();
}
bool MCSAnalysis::MatchUSDS(){
bool trackmatched = true;
jUS=-1;
jDS=-1;
kUS=-1;
kDS=-1;
if( scifievent->scifitracks().size() == 1 ||
scifievent->scifitracks().size() == 2){
for ( size_t j=0; j<scifievent->scifitracks().size(); j++){
int npoints = scifievent->scifitracks()[j]->scifitrackpoints().size();
double maxUS=0.0, minDS=44000;
int tracker = scifievent->scifitracks()[j]->tracker();
for ( int k=0; k<npoints; k++){
double zpos =
scifievent->scifitracks()[j]->scifitrackpoints()[k]->pos().z();
if(tracker==0 && zpos > maxUS){
maxUS = zpos;
kUS = k;
jUS = j;
}
if(tracker==1 && zpos < minDS){
minDS = zpos;
kDS = k;
jDS = j;
}
}
if (jUS != -1 && kUS != -1 && jDS != -1 && kDS != 1) {
USrefplaneZ = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->pos().z();
DSrefplaneZ = minDS;
// std::cout<<"Identified US track by ["<<jUS<<", "<<kUS<<"] at z = "<<USrefplaneZ<<" mm and DS track by ["<<jDS<<", "<<kDS<<"] at z = "<<DSrefplaneZ<<" mm."<<std::endl;
}
}
if (jUS == -1 || kUS == -1) {
//std::cout<<"Failed US track by ["<<jUS<<", "<<kUS<<"] and DS track by ["<<jDS<<", "<<kDS<<"]"<<std::endl;
trackmatched = false;
}
}
else trackmatched = false;
return trackmatched;
}
bool MCSAnalysis::PIDSelection(bool isdata=true){
// Consider the TOF hits first
double rawTOF0HitTime = -1., rawTOF1HitTime = -1., rawTOF2HitTime = -1.;
/*
if ( tofevent->GetTOFEventSlabHit().GetTOF0SlabHitArraySize() == 2 )
rawTOF0HitTime = ( tofevent->GetTOFEventSlabHit().GetTOF0SlabHitArray()[0].GetRawTime() +
tofevent->GetTOFEventSlabHit().GetTOF0SlabHitArray()[1].GetRawTime() ) / 2.;
else
return false;
if ( tofevent->GetTOFEventSlabHit().GetTOF1SlabHitArraySize() == 2 )
rawTOF1HitTime = ( tofevent->GetTOFEventSlabHit().GetTOF1SlabHitArray()[0].GetRawTime() +
tofevent->GetTOFEventSlabHit().GetTOF1SlabHitArray()[1].GetRawTime() ) / 2.;
else
return false;
if ( tofevent->GetTOFEventSlabHit().GetTOF2SlabHitArraySize() == 2 )
rawTOF2HitTime = ( tofevent->GetTOFEventSlabHit().GetTOF2SlabHitArray()[0].GetRawTime() +
tofevent->GetTOFEventSlabHit().GetTOF2SlabHitArray()[1].GetRawTime() ) / 2.;
else
return false;
*/
if ( tofevent->GetTOFEventSpacePoint().GetTOF0SpacePointArraySize() >= 1 )
rawTOF0HitTime = tofevent->GetTOFEventSpacePoint().GetTOF0SpacePointArray()[0].GetTime();
else
return false;
if ( tofevent->GetTOFEventSpacePoint().GetTOF1SpacePointArraySize() >= 1 )
rawTOF1HitTime = tofevent->GetTOFEventSpacePoint().GetTOF1SpacePointArray()[0].GetTime();
else
return false;
if ( tofevent->GetTOFEventSpacePoint().GetTOF2SpacePointArraySize() >= 1 )
rawTOF2HitTime = tofevent->GetTOFEventSpacePoint().GetTOF2SpacePointArray()[0].GetTime();
else // Allow for TOF2 to not be hit
rawTOF2HitTime = rawTOF1HitTime + 100.0 * 8.22475 / 0.299792458; // ns.
// return false;
if(isdata){
tof10->Fill(rawTOF1HitTime - rawTOF0HitTime);
tof21->Fill(rawTOF2HitTime - rawTOF1HitTime);
if ( rawTOF1HitTime - rawTOF0HitTime < TOF_lower_limit ||
rawTOF1HitTime - rawTOF0HitTime > TOF_upper_limit) return false;
// if ( rawTOF2HitTime - rawTOF1HitTime < TOF_lower_limit ||
// rawTOF2HitTime - rawTOF1HitTime > TOF_upper_limit) return false;
tof10_sel->Fill(rawTOF1HitTime - rawTOF0HitTime);
tof21_sel->Fill(rawTOF2HitTime - rawTOF1HitTime);
}
else {
mctof10->Fill(rawTOF1HitTime - rawTOF0HitTime);
mctof21->Fill(rawTOF2HitTime - rawTOF1HitTime);
if ( rawTOF1HitTime - rawTOF0HitTime < TOF_lower_limit ||
rawTOF1HitTime - rawTOF0HitTime > TOF_upper_limit) return false;
// if ( rawTOF2HitTime - rawTOF1HitTime < TOF_lower_limit ||
// rawTOF2HitTime - rawTOF1HitTime > TOF_upper_limit) return false;
mctof10_sel->Fill(rawTOF1HitTime - rawTOF0HitTime);
mctof21_sel->Fill(rawTOF2HitTime - rawTOF1HitTime);
}
return true;
}
bool MCSAnalysis::RadialSelection(double pz){
bool selected = true;
if (jUS == -1 || kUS == -1)
selected = false;
else {
Vars USplane;
USplane.X = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->pos().x() + _sys["alXUS"];
USplane.Y = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->pos().y() + _sys["alYUS"];
USplane.Z = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->pos().z();
// if ( sqrt(xpos*xpos + ypos*ypos) > meanp) selected = false;
USplane.dXdz = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->gradient().x() +
tan(_sys["thXUS"] * atan(1.)/45.0);
USplane.dYdz = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->gradient().y() +
tan(_sys["thYUS"] * atan(1.)/45.0);
USplane.pz = pz; // scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->mom().z();
USplane.px = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->mom().x() +
tan(_sys["thXUS"] * atan(1.)/45.0) * USplane.pz;
USplane.py = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->mom().y() +
tan(_sys["thXUS"] * atan(1.)/45.0) * USplane.pz;
// scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->mom().z();
// if ( sqrt(dXdz*dXdz + dYdz*dYdz) > sigmap) selected = false;
double abspos = _sys["abspos"];
double phi = atan2(USplane.dYdz, USplane.dXdz);
double zdiff = 2*fabs(USplane.Z - abspos);
// double xabs = dXdz > 0 ? (dXdz + sigmap*cos(phi)) * zdiff + xpos : (dXdz - sigmap*cos(phi)) * zdiff + xpos;
// double yabs = dYdz > 0 ? (dYdz + sigmap*sin(phi)) * zdiff + ypos : (dYdz - sigmap*sin(phi)) * zdiff + ypos;
USplane.dXdz += sigmap*cos(phi);
USplane.dYdz += sigmap*sin(phi);
USplane.px += sigmap*cos(phi)*USplane.pz;
USplane.py += sigmap*sin(phi)*USplane.pz;
// double xabs = (dXdz + sigmap*cos(phi)) * zdiff + xpos;
// double yabs = (dYdz + sigmap*sin(phi)) * zdiff + ypos;
Vars DSproj = PropagateVarsMu(USplane, _sys["abspos"] + 549.95);
if ( sqrt(DSproj.X*DSproj.X + DSproj.Y*DSproj.Y) > meanp) selected = false;
}
return selected;
}
std::vector<double> MCSAnalysis::DefineProjectionAngles(Vars US, Vars DS){
std::vector<double> projTheta;
double USnorm = 1./sqrt(1 + US.dXdz*US.dXdz + US.dYdz*US.dYdz);
double u[3] = {US.dXdz*USnorm, US.dYdz*USnorm, USnorm};
double w[3] = {-u[0]*u[1], (u[0]*u[0] + u[2]*u[2]), -u[1]*u[2]};
double Wnorm = 1./sqrt(w[0]*w[0] + w[1]*w[1] + w[2]*w[2]);
w[0] *= Wnorm;
w[1] *= Wnorm;
w[2] *= Wnorm;
double DSnorm = 1./sqrt(1 + DS.dXdz*DS.dXdz + DS.dYdz*DS.dYdz);
double d[3] = {DS.dXdz*DSnorm, DS.dYdz*DSnorm, DSnorm};
projTheta.push_back( atan( (d[0]*w[0] + d[1]*w[1] + d[2]*w[2])/
(d[0]*u[0] + d[1]*u[1] + d[2]*u[2]) ));
projTheta.push_back( atan( (d[0]*u[2] - u[0]*d[2])\
/(d[0]*u[0] + d[1]*u[1] + d[2]*d[2]) *
1./sqrt(u[2]*u[2] + u[0]*u[0])) );
// projTheta.push_back( atan( (d[0]*u[2] - u[0]*d[2]) \
///(d[0]*u[0] + d[1]*u[1] + d[2]*u[2]) *
// 1./sqrt(u[0]*u[0] + u[2]*u[2])) );
projTheta.push_back( acos( ( (1 + US.dXdz * DS.dXdz + US.dYdz * DS.dYdz )/
sqrt(1 + US.dXdz*US.dXdz + US.dYdz*US.dYdz)/
sqrt(1 + DS.dXdz*DS.dXdz + DS.dYdz*DS.dYdz))) );
return projTheta;
}
std::vector<double> MCSAnalysis::CalculatePathLength(double pz){
std::vector<double> path_length;
std::vector<double> vpath_length;
// Path length for muon between TOF1 and absorber
Vars USplane;
/*
std::cout << "jUS " << jUS << std::endl;
std::cout << "kUS " << kUS << std::endl;
*/
USplane.X = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->pos().x() + _sys["alXUS"];
USplane.Y = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->pos().y() + _sys["alYUS"];
USplane.Z = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->pos().z();
USplane.dXdz = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->gradient().x() +
tan(_sys["thXUS"] * atan(1.)/45.0);
USplane.dYdz = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->gradient().y() +
tan(_sys["thYUS"] * atan(1.)/45.0);
USplane.pz = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->mom().z();
USplane.px = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->mom().x() +
tan(_sys["thXUS"] * atan(1.)/45.0) * USplane.pz;
USplane.py = scifievent->scifitracks()[jUS]->scifitrackpoints()[kUS]->mom().y() +
tan(_sys["thXUS"] * atan(1.)/45.0) * USplane.pz;
Vars USabsoproj = PropagateVarsMu(USplane, _sys["abspos"]);
Vars USTOF1proj = PropagateVarsMu(USplane, _sys["TOF1_z"]);
/*
std::cout << USabsoproj.X << std::endl;
std::cout << USplane.X << std::endl;
std::cout << USTOF1proj.X << std::endl;
*/
vpath_length.push_back(USabsoproj.X - USTOF1proj.X);
vpath_length.push_back(USabsoproj.Y - USTOF1proj.Y);
vpath_length.push_back(USabsoproj.Z - USTOF1proj.Z);
path_length.push_back(sqrt(vpath_length[0]*vpath_length[0] + vpath_length[1]*vpath_length[1] + vpath_length[2]*vpath_length[2]));
//Path length for muon between absorber and TOF2
vpath_length.clear();
Vars DSplane;
/*
std::cout << "jDS " << jDS << std::endl;
std::cout << "kDS " << kDS << std::endl;
*/
DSplane.X = scifievent->scifitracks()[jDS]->scifitrackpoints()[kDS]->pos().x() + _sys["alXDS"];
DSplane.Y = scifievent->scifitracks()[jDS]->scifitrackpoints()[kDS]->pos().y() + _sys["alYDS"];
DSplane.Z = scifievent->scifitracks()[jDS]->scifitrackpoints()[kDS]->pos().z();
DSplane.dXdz = scifievent->scifitracks()[jDS]->scifitrackpoints()[kDS]->gradient().x() +
tan(_sys["thXDS"] * atan(1.)/45.0);
DSplane.dYdz = scifievent->scifitracks()[jDS]->scifitrackpoints()[kDS]->gradient().y() +
tan(_sys["thYDS"] * atan(1.)/45.0);
DSplane.pz = scifievent->scifitracks()[jDS]->scifitrackpoints()[kDS]->mom().z();
DSplane.px = scifievent->scifitracks()[jDS]->scifitrackpoints()[kDS]->mom().x() +
tan(_sys["thXDS"] * atan(1.)/45.0) * DSplane.pz;
DSplane.py = scifievent->scifitracks()[jDS]->scifitrackpoints()[kDS]->mom().y() +
tan(_sys["thXDS"] * atan(1.)/45.0) * DSplane.pz;
Vars DSabsoproj = PropagateVarsMu(DSplane, _sys["abspos"]);
Vars DSTOF2proj = PropagateVarsMu(DSplane, _sys["TOF2_z"]);
vpath_length.push_back(DSTOF2proj.X - DSabsoproj.X);
vpath_length.push_back(DSTOF2proj.Y - DSabsoproj.Y);
vpath_length.push_back(DSTOF2proj.Z - DSabsoproj.Z);
path_length.push_back(sqrt(vpath_length[0]*vpath_length[0] + vpath_length[1]*vpath_length[1] + vpath_length[2]*vpath_length[2]));
return path_length;
}
double MCSAnalysis::CorMomFromTOF(double pz){
// Initialise and collect initial TOF and pz
double t_path = 0;
double p_corrected = 0;
double t_initial = TimeofFlight();
if (t_initial != 100) {
t_initial = t_initial*0.299792458;
std::vector<double> path_length = CalculatePathLength(pz);
if (path_length.size() == 2) {
double s1 = path_length.at(0)/1000;
double s2 = path_length.at(1)/1000;
pz = 105.65*(s1+s2)/sqrt(pow(t_initial,2)-pow((s1+s2),2));
// delta - from Bethe-Bloch (units are cm)
double z = 3.25;
double rho = 0.694;
double dEdx = BetheBloch(pz);
double Eloss = dEdx * z * rho;
double E = sqrt(pow(pz,2)+pow(105.65,2));
E -= Eloss;
double ploss = sqrt(pow(E,2) - pow(105.65,2));
E += Eloss;
double delta = pz - ploss;
/*
std::cout << "delta " << delta << std::endl;
std::cout << "E " << E << std::endl;
*/
// time0
double t1 = s1*sqrt(pow(pz+delta,2)+pow(105.65,2))/(pz+delta);
double t2 = s2*sqrt(pow(pz-delta,2)+pow(105.65,2))/(pz-delta);
double t0 = t1 + t2;
/*
std::cout << "t2 " << t2 << std::endl;
std::cout << "t1 " << t1 << std::endl;
std::cout << "t0 " << t0 << std::endl;
*/
// Root finding
/*
MyFunction1D myf1;
myf1.E = E;
myf1.delta = delta;
myf1.s1 = s1;
myf1.s2 = s2;
std::cout << "myf1.operator()(pz) " << myf1.operator()(pz) << std::endl;
std::cout << "myf1.Derivative(pz) " << myf1.Derivative(pz) << std::endl;
ROOT::Math::GradFunctor1D f1(myf1);
ROOT::Math::RootFinder rfn(ROOT::Math::RootFinder::kGSL_STEFFENSON);
rfn.SetFunction(f1, pz);
rfn.Solve();
cout << rfn.Root() << endl;
*/
// delta_t
double term3i = 0.5* (s1 + s2)*pow(105.65,2)*pow(delta,2)/(pow(pz,2)*pow(E,2));
double term3ii = pz/E + 2*E/pz;
double term2 = -(s1 - s2) * delta * pow(105.65,2)/ (pow(pz,2)*E);
double dtime = term2 + term3i*term3ii;
/*
std::cout << "term3i " << term3i << std::endl;
std::cout << "term3ii " << term3ii << std::endl;
std::cout << "term2 " << term2 << std::endl;
std::cout << "dtime " << dtime << std::endl;
*/
// Corrected P
double time = t0 + dtime;
p_corrected = pz - ((1/(s1-s2))*E*pow(pz,2)*dtime)/pow(105.65,2);
//std::cout << "pz " << pz << std::endl;
pz = p_corrected;
t_path = t0+dtime;
/*
std::cout << "p_corrected " << p_corrected << std::endl;
std::cout << "counter " << counter << std::endl;
std::cout << "iteration " << i << std::endl;
std::cout << "t_path " << t_path << std::endl;
*/
}
// Iteration
/*
counter += 1;
int i = 0;
for (i;i<1000;i++)
while (t0_first*1.1-t_path>0.1)
t_cor->Fill(i,t_path);
if (counter==3) {
std::cout << "doing graph" << std::endl;
TCanvas *c1 = new TCanvas();
t_cor->Draw();
c1->SaveAs("t_cor.pdf");
c1->Clear();
}
*/
cor_mom->Fill(p_corrected);
}
}
double MCSAnalysis::TimeofFlight(){
double rawTOF1HitTime = -1., rawTOF2HitTime = -1.;
if( int(tofevent->GetTOFEventSpacePoint().GetTOF1SpacePointArray().size()) > 0)
rawTOF1HitTime =
tofevent->GetTOFEventSpacePoint().GetTOF1SpacePointArray()[0].GetTime();
if( int(tofevent->GetTOFEventSpacePoint().GetTOF2SpacePointArray().size()) > 0)
rawTOF2HitTime =
tofevent->GetTOFEventSpacePoint().GetTOF2SpacePointArray()[0].GetTime();
double dt = 100.0; // something rediculously large as a default number
if ( rawTOF1HitTime != -1 && rawTOF2HitTime != -1 ){
dt = rawTOF2HitTime - rawTOF1HitTime;
}
return dt;
}
double MCSAnalysis::BetheBloch(double pz){
double beta = pow(pz,2)/(pow(105.65,2)+pow(pz,2));
double gamma = 1/sqrt(1-pow(beta,2));
double W = 2*0.511*pow(beta,2)*pow(gamma,2)/(1+2*gamma*0.511/105.65+pow(0.511/105.65,2));
double I = 36.5e-6;
double density = log(18.51e-6/I)+log(beta*gamma)-1/2;
double dEdxpre = 0.307075*2/(pow(beta,2)*7.94894);
double dEdxterm1 = 0.5*log(2*0.511*pow(beta,2)*pow(gamma,2)*W/pow(I,2)) - pow(beta,2) - density;
double dEdx = dEdxpre * dEdxterm1;
/*
std::cout << "beta " << beta << std::endl;
std::cout << "gamma " << gamma << std::endl;
std::cout << "W " << W << std::endl;
std::cout << "density " << density << std::endl;
std::cout << "dEdxpre " << dEdxpre << std::endl;
std::cout << "dEdxterm1 " << dEdxterm1 << std::endl;
std::cout << "dEdx " << dEdx << std::endl;
*/
return dEdx;
}
double MCSAnalysis::MomentumFromTOF(bool isdata=true){
// Cuts remove events where the following statements do not make sense so we proceed without cuts.
double rawTOF0HitTime = -1., rawTOF1HitTime = -1., rawTOF2HitTime = -1.;
if( int(tofevent->GetTOFEventSpacePoint().GetTOF0SpacePointArray().size()) > 0)
rawTOF0HitTime =
tofevent->GetTOFEventSpacePoint().GetTOF0SpacePointArray()[0].GetTime();
if( int(tofevent->GetTOFEventSpacePoint().GetTOF1SpacePointArray().size()) > 0)
rawTOF1HitTime =
tofevent->GetTOFEventSpacePoint().GetTOF1SpacePointArray()[0].GetTime();
if( int(tofevent->GetTOFEventSpacePoint().GetTOF2SpacePointArray().size()) > 0)
rawTOF2HitTime =
tofevent->GetTOFEventSpacePoint().GetTOF2SpacePointArray()[0].GetTime();
// tofevent->GetTOFEventSlabHit().GetTOF2SlabHitArray()[1].GetRawTime() ) / 2.;
// need to hard code a few things here (unfortunately) pertaining to the geometry and the time of flight.
double dt0 = (_sys["TOF1_z"] - _sys["TOF0_z"]) / 0.299792458 / 1000.; // ns.
double dt = 10.0 * dt0; // something rediculously large as a default number
double pz = 105.65 / sqrt(dt*dt/dt0/dt0 - 1.0);
if ( rawTOF1HitTime != -1 && rawTOF0HitTime != -1 ){
dt = rawTOF1HitTime - rawTOF0HitTime;
pz = 105.65 / sqrt(dt*dt/dt0/dt0 - 1.0) - 36.1;
}
if ( rawTOF1HitTime != -1 && rawTOF2HitTime != -1 ){
// Better estimate of the longitudinal momentum
dt0 = (_sys["TOF2_z"] - _sys["TOF1_z"]) / 0.299792458 / 1000.; // ns.
dt = rawTOF2HitTime - rawTOF1HitTime;
pz = 105.65 / sqrt(dt*dt/dt0/dt0 - 1.0);
}
if(isdata)
calc_mom->Fill(pz);
else
mccalc_mom->Fill(pz);
return pz;
}
void MCSAnalysis::ConvolveWithInputDistribution(std::string distname){
int isfirst = 0;
if (distname.find(modelname1.c_str()) != std::string::npos)
isfirst = 1;
TFile* infile = new TFile(modelfile.c_str());
std::string tmpname = "thetaX_refconv_";
tmpname += distname;
TH1D* thetaX_refconv =
new TH1D(tmpname.c_str(),"Change in Projected Angle (X);#Delta#theta_{X}; Events per 4 mrad",
_histlimits["NbinsXY"], _histlimits["minXY"], _histlimits["maxXY"]);
tmpname = "thetaY_refconv_";
tmpname += distname;
TH1D* thetaY_refconv =
new TH1D(tmpname.c_str(),"Change in Projected Angle (Y);#Delta#theta_{Y}; Events per 4 mrad",
_histlimits["NbinsXY"], _histlimits["minXY"], _histlimits["maxXY"]);
tmpname = "thetaScatt_refconv_";
tmpname += distname;
TH1D* thetaScatt_refconv =
new TH1D(tmpname.c_str(),"Scattering Angle between Momentum Vectors;#theta_{Scatt}; Events per mrad",
_histlimits["NbinsTh"], _histlimits["minTh"], _histlimits["maxTh"]);
tmpname = "theta2Scatt_refconv_";
tmpname += distname;
TH1D* theta2Scatt_refconv =
new TH1D(tmpname.c_str(),"Scattering Angle between Momentum Vectors;#theta^{2}_{Scatt}; Events per mrad",
_histlimits["NbinsTh2"], _histlimits["minTh2"], _histlimits["maxTh2"]);
tmpname = "thetaScatt_refconv_vp_";
tmpname += distname;
TH2D* thetaScatt_refconv_vp =
new TH2D(tmpname.c_str(),"Scattering Angle between Momentum Vectors;Momentum (MeV/c); #theta_{Scatt}",
200, 100, 300, _histlimits["NbinsTh"], _histlimits["minTh"], _histlimits["maxTh"]);
TH2D* thetaXUS_thetaXDS =
new TH2D("thetaXUS_thetaXDS","Upstream vs. Downstream Angle;#theta_{X}^{US}; #theta_{X}^{DS}",
_histlimits["NbinsXY"], _histlimits["minXY"], _histlimits["maxXY"],
_histlimits["NbinsXY"], _histlimits["minXY"], _histlimits["maxXY"]);
TH2D* thetaYUS_thetaYDS =
new TH2D("thetaYUS_thetaYDS","Upstream vs. Downstream Angle;#theta_{X}^{US}; #theta_{X}^{DS}",
_histlimits["NbinsXY"], _histlimits["minXY"], _histlimits["maxXY"],
_histlimits["NbinsXY"], _histlimits["minXY"], _histlimits["maxXY"]);
tmpname = "thetaX_";
tmpname += distname;
std::cout<<"Convolution with "<<tmpname<<" from "<<modelfile<<std::endl;
TH1D* hx = (TH1D*)infile->Get(tmpname.c_str());
TH1D* hy = (TH1D*)infile->Get(tmpname.c_str());
// Collection DSConvSet;
// for (int l=0; l<10; l++){
for (int i=0; i<_USMCset.N(); i++){
for (int j=0; j<20; j++){
double dthetaX = hx->GetRandom() * _sys["resX"];
double dthetaY = hy->GetRandom() * _sys["resY"];
// First project the upstream track to the absorber
double zabspos = _sys["abspos"] + 0.0;
Vars projvarAbs = PropagateVarsMu(_USMCset.E(i), zabspos);
double xabs = projvarAbs.X; /// _USMCset.E(i).X + _USMCset.E(i).dXdz * dzabsUS;
double yabs = projvarAbs.Y; /// _USMCset.E(i).Y + _USMCset.E(i).dYdz * dzabsUS;
// Now add the angle from the model to the downstream measurement.
double dXdz_abs = _DSMCset.E(i).dXdz + tan(dthetaY);
double dYdz_abs = _DSMCset.E(i).dYdz + tan(dthetaX);
// double d_thetaY = atan(dXdz_abs) - atan(_DSMCset.E(i).dXdz);
// double d_thetaX = atan(dYdz_abs) - atan(_DSMCset.E(i).dYdz);
// Project the track into the downstream reference plane
// double xref = xabs + dXdz_abs * dzabsDS;
// double yref = yabs + dYdz_abs * dzabsDS;
Vars tmpvar = _DSMCset.E(i);
tmpvar.X = xabs;
tmpvar.Y = yabs;
tmpvar.Z = _sys["abspos"];
tmpvar.dXdz = dXdz_abs;
tmpvar.dYdz = dYdz_abs;
tmpvar.px = dXdz_abs * _USMCset.E(i).pz;
tmpvar.py = dYdz_abs * _USMCset.E(i).pz;
tmpvar.pz = _USMCset.E(i).pz;
tmpvar.TOF12= _USMCset.E(i).TOF12;
tmpvar.TOF01= _USMCset.E(i).TOF01;
std::vector<double> projDTheta = DefineProjectionAngles(tmpvar, _DSMCset.E(i));
double d_thetaX = projDTheta[0];
double d_thetaY = projDTheta[1];
//double cosdthetaScatt = ( (1 + dXdz_abs * _DSMCset.E(i).dXdz + dYdz_abs*_DSMCset.E(i).dYdz) /
// sqrt( 1 + dXdz_abs*dXdz_abs + dYdz_abs*dYdz_abs) /
// sqrt(1 + _DSMCset.E(i).dXdz*_DSMCset.E(i).dXdz + _DSMCset.E(i).dYdz * _DSMCset.E(i).dYdz) );
double dthetaScatt = projDTheta[2]; /// acos(cosdthetaScatt);
Vars projvar = PropagateVarsMu(tmpvar, _sys["abspos"] + 2993.05);
// Remove events that do not pass through the tracker at its centre
// double xtracker = xabs + dXdz_abs * (_sys["abspos"] + 549.95);
// double ytracker = yabs + dYdz_abs * (dzabsDS + 549.95);
if( sqrt(projvar.X*projvar.X + projvar.Y*projvar.Y) > meanp ){
tmpvar.X = 0.0;
tmpvar.Y = 0.0;
tmpvar.Z = 0.0;
tmpvar.dXdz = 1./2.;
tmpvar.dYdz = 1./2.;
}
std::vector<double> projTheta = DefineProjectionAngles(_USMCset.E(i), tmpvar);
double thetaY = projTheta[1]; /// atan(tmpvar.dXdz) - atan(_USMCset.E(i).dXdz);
double thetaX = projTheta[0]; /// atan(tmpvar.dYdz) - atan(_USMCset.E(i).dYdz);
// double cosScatt = ( (1 + _USMCset.E(i).dXdz * tmpvar.dXdz +
// _USMCset.E(i).dYdz * tmpvar.dYdz )/
// sqrt(1 + _USMCset.E(i).dXdz*_USMCset.E(i).dXdz +
// _USMCset.E(i).dYdz*_USMCset.E(i).dYdz)/
// sqrt(1 + tmpvar.dXdz*tmpvar.dXdz +
// tmpvar.dYdz*tmpvar.dYdz));
double thetaScatt = projTheta[2]; /// acos(cosScatt);