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Stephen A. Wood authored
Enforce variable conventions Default using_scin and using_prune selection to off Break different track selection methods into different class methods
Stephen A. Wood authoredEnforce variable conventions Default using_scin and using_prune selection to off Break different track selection methods into different class methods
THcHallCSpectrometer.cxx 30.25 KiB
//*-- Author : Stephen Wood 20-Apr-2012
//////////////////////////////////////////////////////////////////////////
//
// THcHallCSpectrometer
//
// A standard Hall C spectrometer.
// Contains no standard detectors,
// May add hodoscope
//
// The usual name of this object is either "H", "S", or "P"
// for HMS, SOS, or suPerHMS respectively
//
// Defines the functions FindVertices() and TrackCalc(), which are common
// to both the LeftHRS and the RightHRS.
//
// Special configurations of the HRS (e.g. more detectors, different
// detectors) can be supported in on e of three ways:
//
// 1. Use the AddDetector() method to include a new detector
// in this apparatus. The detector will be decoded properly,
// and its variables will be available for cuts and histograms.
// Its processing methods will also be called by the generic Reconstruct()
// algorithm implemented in THaSpectrometer::Reconstruct() and should
// be correctly handled if the detector class follows the standard
// interface design.
//
// 2. Write a derived class that creates the detector in the
// constructor. Write a new Reconstruct() method or extend the existing
// one if necessary.
//
// 3. Write a new class inheriting from THaSpectrometer, using this
// class as an example. This is appropriate if your HRS
// configuration has fewer or different detectors than the
// standard HRS. (It might not be sensible to provide a RemoveDetector()
// method since Reconstruct() relies on the presence of the
// standard detectors to some extent.)
//
// For timing calculations, S1 is treated as the scintillator at the
// 'reference distance', corresponding to the pathlength correction
// matrix.
//
//
// Golden track using scin. Zafar Ahmed. August 19 2014
// Goldent track is moved to THcHallCSpectrometer::TrackCalc()
// if fSelUsingScin == 0 then golden track is calculated just
// like podd. i.e. it is the first track with minimum chi2/ndf
// with sorting ON
//
// if fSelUsingScin == 1 then golden track is calculetd just like
// engine/HTRACKING/h_select_best_track_using_scin.h. This method
// gives the best track with minimum value of chi2/ndf but with
// additional cuts on the tracks. These cuts are on dedx, beta
// and on energy.
//
// Golden track using prune. Zafar Ahmed. September 23 2014
// Selection of golden track using prune method is added.
// A bug is also fixed in THcHodoscope class
// Number of pmts hits, focal plane time, good time for plane 4
// and good time for plane 3 are set to the tracks in
// THcHodoscope class.
//
//////////////////////////////////////////////////////////////////////////
#include "THcHallCSpectrometer.h"
#include "THaTrackingDetector.h"
#include "THcGlobals.h"
#include "THcParmList.h"
#include "THaTrack.h"
#include "THaTrackProj.h"#include "THaTriggerTime.h"
#include "TMath.h"
#include "TList.h"
#include "THcRawShowerHit.h"
#include "THcSignalHit.h"
#include "THcShower.h"
#include "THcHitList.h"
#include "THcHodoscope.h"
#include <vector>
#include <cstring>
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <fstream>
using std::vector;
using namespace std;
//_____________________________________________________________________________
THcHallCSpectrometer::THcHallCSpectrometer( const char* name, const char* description ) :
THaSpectrometer( name, description )
{
// Constructor. Defines the standard detectors for the HRS.
// AddDetector( new THaTriggerTime("trg","Trigger-based time offset"));
//sc_ref = static_cast<THaScintillator*>(GetDetector("s1"));
SetTrSorting(kTRUE);
}
//_____________________________________________________________________________
THcHallCSpectrometer::~THcHallCSpectrometer()
{
// Destructor
DefineVariables( kDelete );
}
//_____________________________________________________________________________
Int_t THcHallCSpectrometer::DefineVariables( EMode mode )
{
// Define/delete standard variables for a spectrometer (tracks etc.)
// Can be overridden or extended by derived (actual) apparatuses
if( mode == kDefine && fIsSetup ) return kOK;
THaSpectrometer::DefineVariables( mode );
fIsSetup = ( mode == kDefine );
RVarDef vars[] = {
{ "tr.betachisq", "Chi2 of beta", "fTracks.THaTrack.GetBetaChi2()"},
{ 0 }
};
return DefineVarsFromList( vars, mode );
}
//_____________________________________________________________________________
Bool_t THcHallCSpectrometer::SetTrSorting( Bool_t set )
{
if( set )
fProperties |= kSortTracks;
else
fProperties &= ~kSortTracks;
return set;
}
//_____________________________________________________________________________
Bool_t THcHallCSpectrometer::GetTrSorting() const{
return ((fProperties & kSortTracks) != 0);
}
//_____________________________________________________________________________
void THcHallCSpectrometer::InitializeReconstruction()
{
fNReconTerms = 0;
fReconTerms.clear();
fAngSlope_x = 0.0;
fAngSlope_y = 0.0;
fAngOffset_x = 0.0;
fAngOffset_y = 0.0;
fDetOffset_x = 0.0;
fDetOffset_y = 0.0;
fZTrueFocus = 0.0;
}
//_____________________________________________________________________________
Int_t THcHallCSpectrometer::ReadDatabase( const TDatime& date )
{
static const char* const here = "THcHallCSpectrometer::ReadDatabase";
#ifdef WITH_DEBUG
cout << "In THcHallCSpectrometer::ReadDatabase()" << endl;
#endif
// --------------- To get energy from THcShower ----------------------
const char* detector_name = "hod";
//THaApparatus* app = GetDetector();
THaDetector* det = GetDetector("hod");
// THaDetector* det = app->GetDetector( shower_detector_name );
if( !dynamic_cast<THcHodoscope*>(det) ) {
Error("THcHallCSpectrometer", "Cannot find hodoscope detector %s",
detector_name );
return fStatus = kInitError;
}
fHodo = static_cast<THcHodoscope*>(det); // fHodo is a membervariable
// fShower = static_cast<THcShower*>(det); // fShower is a membervariable
// --------------- To get energy from THcShower ----------------------
// Get the matrix element filename from the variable store
// Read in the matrix
InitializeReconstruction();
char prefix[2];
cout << " GetName() " << GetName() << endl;
prefix[0]=tolower(GetName()[0]);
prefix[1]='\0';
string reconCoeffFilename;
DBRequest list[]={
{"_recon_coeff_filename", &reconCoeffFilename, kString },
{"theta_offset", &fThetaOffset, kDouble },
{"phi_offset", &fPhiOffset, kDouble },
{"delta_offset", &fDeltaOffset, kDouble },
{"thetacentral_offset", &fThetaCentralOffset, kDouble },
{"_oopcentral_offset", &fOopCentralOffset, kDouble },
{"pcentral_offset", &fPCentralOffset, kDouble },
{"pcentral", &fPcentral, kDouble },
{"theta_lab", &fTheta_lab, kDouble }, {"partmass", &fPartMass, kDouble },
{"sel_using_scin", &fSelUsingScin, kInt, 0, 1},
{"sel_using_prune", &fSelUsingPrune, kInt, 0, 1},
{"sel_ndegreesmin", &fSelNDegreesMin, kDouble, 0, 1},
{"sel_dedx1min", &fSeldEdX1Min, kDouble, 0, 1},
{"sel_dedx1max", &fSeldEdX1Max, kDouble, 0, 1},
{"sel_betamin", &fSelBetaMin, kDouble, 0, 1},
{"sel_betamax", &fSelBetaMax, kDouble, 0, 1},
{"sel_etmin", &fSelEtMin, kDouble, 0, 1},
{"sel_etmax", &fSelEtMax, kDouble, 0, 1},
{"hodo_num_planes", &fNPlanes, kInt },
{"scin_2x_zpos", &fScin2XZpos, kDouble, 0, 1},
{"scin_2x_dzpos", &fScin2XdZpos, kDouble, 0, 1},
{"scin_2y_zpos", &fScin2YZpos, kDouble, 0, 1},
{"scin_2y_dzpos", &fScin2YdZpos, kDouble, 0, 1},
{"prune_xp", &fPruneXp, kDouble, 0, 1},
{"prune_yp", &fPruneYp, kDouble, 0, 1},
{"prune_ytar", &fPruneYtar, kDouble, 0, 1},
{"prune_delta", &fPruneDelta, kDouble, 0, 1},
{"prune_beta", &fPruneBeta, kDouble, 0, 1},
{"prune_df", &fPruneDf, kDouble, 0, 1},
{"prune_chibeta", &fPruneChiBeta, kDouble, 0, 1},
{"prune_npmt", &fPruneNPMT, kDouble, 0, 1},
{"prune_fptime", &fPruneFpTime, kDouble, 0, 1},
{0}
};
// Default values
fSelUsingScin = 0;
fSelUsingPrune = 0;
gHcParms->LoadParmValues((DBRequest*)&list,prefix);
EnforcePruneLimits();
cout << "\n\n\nhodo planes = " << fNPlanes << endl;
cout << "sel using scin = " << fSelUsingScin << endl;
cout << "fPruneXp = " << fPruneXp << endl;
cout << "fPruneYp = " << fPruneYp << endl;
cout << "fPruneYtar = " << fPruneYtar << endl;
cout << "fPruneDelta = " << fPruneDelta << endl;
cout << "fPruneBeta = " << fPruneBeta << endl;
cout << "fPruneDf = " << fPruneDf << endl;
cout << "fPruneChiBeta = " << fPruneChiBeta << endl;
cout << "fPruneFpTime = " << fPruneFpTime << endl;
cout << "fPruneNPMT = " << fPruneNPMT << endl;
cout << "sel using prune = " << fSelUsingPrune << endl;
cout << "fPartMass = " << fPartMass << endl;
cout << "fPcentral = " << fPcentral << " " <<fPCentralOffset << endl;
cout << "fThate_lab = " << fTheta_lab << " " <<fThetaCentralOffset << endl;
fPcentral= fPcentral*(1.+fPCentralOffset/100.);
// Check that these offsets are in radians
fTheta_lab=fTheta_lab + fThetaCentralOffset*TMath::RadToDeg();
Double_t ph = 0.0+fPhiOffset*TMath::RadToDeg();
SetCentralAngles(fTheta_lab, ph, false);
Double_t off_x = 0.0, off_y = 0.0, off_z = 0.0;
fPointingOffset.SetXYZ( off_x, off_y, off_z );
//
ifstream ifile;
ifile.open(reconCoeffFilename.c_str());
if(!ifile.is_open()) {
Error(here, "error opening reconstruction coefficient file %s",reconCoeffFilename.c_str());
return kInitError; // Is this the right return code?
}
string line="!";
int good=1;
while(good && line[0]=='!') { good = getline(ifile,line).good();
// cout << line << endl;
}
// Read in focal plane rotation coefficients
// Probably not used, so for now, just paste in fortran code as a comment
while(good && line.compare(0,4," ---")!=0) {
// if(line(1:13).eq.'h_ang_slope_x')read(line,1201,err=94)h_ang_slope_x
// if(line(1:13).eq.'h_ang_slope_y')read(line,1201,err=94)h_ang_slope_y
// if(line(1:14).eq.'h_ang_offset_x')read(line,1201,err=94)h_ang_offset_x
// if(line(1:14).eq.'h_ang_offset_y')read(line,1201,err=94)h_ang_offset_y
// if(line(1:14).eq.'h_det_offset_x')read(line,1201,err=94)h_det_offset_x
// if(line(1:14).eq.'h_det_offset_y')read(line,1201,err=94)h_det_offset_y
// if(line(1:14).eq.'h_z_true_focus')read(line,1201,err=94)h_z_true_focus
good = getline(ifile,line).good();
}
// Read in reconstruction coefficients and exponents
line=" ";
good = getline(ifile,line).good();
// cout << line << endl;
fNReconTerms = 0;
fReconTerms.clear();
fReconTerms.reserve(500);
//cout << "Reading matrix elements" << endl;
while(good && line.compare(0,4," ---")!=0) {
fReconTerms.push_back(reconTerm());
sscanf(line.c_str()," %le %le %le %le %1d%1d%1d%1d%1d"
,&fReconTerms[fNReconTerms].Coeff[0],&fReconTerms[fNReconTerms].Coeff[1]
,&fReconTerms[fNReconTerms].Coeff[2],&fReconTerms[fNReconTerms].Coeff[3]
,&fReconTerms[fNReconTerms].Exp[0]
,&fReconTerms[fNReconTerms].Exp[1]
,&fReconTerms[fNReconTerms].Exp[2]
,&fReconTerms[fNReconTerms].Exp[3]
,&fReconTerms[fNReconTerms].Exp[4]);
fNReconTerms++;
good = getline(ifile,line).good();
}
cout << "Read " << fNReconTerms << " matrix element terms" << endl;
if(!good) {
Error(here, "Error processing reconstruction coefficient file %s",reconCoeffFilename.c_str());
return kInitError; // Is this the right return code?
}
return kOK;
}
//_____________________________________________________________________________
void THcHallCSpectrometer::EnforcePruneLimits()
{
// Enforce minimum values for the prune cuts
fPruneXp = TMath::Max( 0.08, fPruneXp);
fPruneYp = TMath::Max( 0.04, fPruneYp);
fPruneYtar = TMath::Max( 4.0, fPruneYtar);
fPruneDelta = TMath::Max( 13.0, fPruneDelta);
fPruneBeta = TMath::Max( 0.1, fPruneBeta);
fPruneDf = TMath::Max( 1.0, fPruneDf);
fPruneChiBeta = TMath::Max( 2.0, fPruneChiBeta);
fPruneFpTime = TMath::Max( 5.0, fPruneFpTime);
fPruneNPMT = TMath::Max( 6.0, fPruneNPMT);
}
//_____________________________________________________________________________
Int_t THcHallCSpectrometer::FindVertices( TClonesArray& tracks )
{
// Reconstruct target coordinates for all tracks found in the focal plane.
// In Hall A, this is passed off to the tracking detectors.
// In Hall C, we do the target traceback here since the traceback should
// not depend on which tracking detectors are used.
fNtracks = tracks.GetLast()+1;
for (Int_t it=0;it<tracks.GetLast()+1;it++) {
THaTrack* track = static_cast<THaTrack*>( tracks[it] );
Double_t hut[5];
Double_t hut_rot[5];
hut[0] = track->GetX()/100.0 + fZTrueFocus*track->GetTheta() + fDetOffset_x;//m
hut[1] = track->GetTheta() + fAngOffset_x;//radians
hut[2] = track->GetY()/100.0 + fZTrueFocus*track->GetPhi() + fDetOffset_y;//m
hut[3] = track->GetPhi() + fAngOffset_y;//radians
Double_t gbeam_y = 0.0;// This will be the y position from the fast raster
hut[4] = -gbeam_y/100.0;
// Retrieve the focal plane coordnates
// Do the transpormation
// Stuff results into track
hut_rot[0] = hut[0];
hut_rot[1] = hut[1] + hut[0]*fAngSlope_x;
hut_rot[2] = hut[2];
hut_rot[3] = hut[3] + hut[2]*fAngSlope_y;
hut_rot[4] = hut[4];
// Compute COSY sums
Double_t sum[4];
for(Int_t k=0;k<4;k++) {
sum[k] = 0.0;
}
for(Int_t iterm=0;iterm<fNReconTerms;iterm++) {
Double_t term=1.0;
for(Int_t j=0;j<5;j++) {
if(fReconTerms[iterm].Exp[j]!=0) {
term *= pow(hut_rot[j],fReconTerms[iterm].Exp[j]);
}
}
for(Int_t k=0;k<4;k++) {
sum[k] += term*fReconTerms[iterm].Coeff[k];
}
}
// Transfer results to track
// No beam raster yet
//; In transport coordinates phi = hyptar = dy/dz and theta = hxptar = dx/dz
//; but for unknown reasons the yp offset is named htheta_offset
//; and the xp offset is named hphi_offset
track->SetTarget(0.0, sum[1]*100.0, sum[0]+fPhiOffset, sum[2]+fThetaOffset);
track->SetDp(sum[3]*100.0+fDeltaOffset); // Percent. (Don't think podd cares if it is % or fraction)
// There is an hpcentral_offset that needs to be applied somewhere.
// (happly_offs)
track->SetMomentum(fPcentral*(1+track->GetDp()/100.0));
}
// ------------------ Moving it to TrackCalc --------------------
/*
// If enabled, sort the tracks by chi2/ndof
if( GetTrSorting() )
fTracks->Sort();
// Find the "Golden Track".
if( GetNTracks() > 0 ) {
// Select first track in the array. If there is more than one track
// and track sorting is enabled, then this is the best fit track
// (smallest chi2/ndof). Otherwise, it is the track with the best
// geometrical match (smallest residuals) between the U/V clusters
// in the upper and lower VDCs (old behavior). //
// Chi2/dof is a well-defined quantity, and the track selected in this
// way is immediately physically meaningful. The geometrical match
// criterion is mathematically less well defined and not usually used
// in track reconstruction. Hence, chi2 sortiing is preferable, albeit
// obviously slower.
fGoldenTrack = static_cast<THaTrack*>( fTracks->At(0) );
fTrkIfo = *fGoldenTrack;
fTrk = fGoldenTrack;
} else
fGoldenTrack = NULL;
*/
// ------------------ Moving it to TrackCalc --------------------
return 0;
}
//_____________________________________________________________________________
Int_t THcHallCSpectrometer::TrackCalc()
{
if ( ( fSelUsingScin == 0 ) && ( fSelUsingPrune == 0 ) ) {
BestTrackSimple();
} else if (fSelUsingPrune !=0) {
BestTrackUsingPrune();
} else {
BestTrackUsingScin();
}
return TrackTimes( fTracks );
}
//_____________________________________________________________________________
Int_t THcHallCSpectrometer::BestTrackSimple()
{
if( GetTrSorting() )
fTracks->Sort();
// Find the "Golden Track".
// if( GetNTracks() > 0 ) {
if( fNtracks > 0 ) {
// Select first track in the array. If there is more than one track
// and track sorting is enabled, then this is the best fit track
// (smallest chi2/ndof). Otherwise, it is the track with the best
// geometrical match (smallest residuals) between the U/V clusters
// in the upper and lower VDCs (old behavior).
//
// Chi2/dof is a well-defined quantity, and the track selected in this
// way is immediately physically meaningful. The geometrical match
// criterion is mathematically less well defined and not usually used
// in track reconstruction. Hence, chi2 sortiing is preferable, albeit
// obviously slower.
fGoldenTrack = static_cast<THaTrack*>( fTracks->At(0) );
fTrkIfo = *fGoldenTrack;
fTrk = fGoldenTrack;
} else
fGoldenTrack = NULL;
return(0);
}
//_____________________________________________________________________________
Int_t THcHallCSpectrometer::BestTrackUsingScin()
{
Double_t chi2Min;
if( fNtracks > 0 ) {
fGoodTrack = -1;
chi2Min = 10000000000.0;
Int_t y2Dmin = 100;
Int_t x2Dmin = 100;
Bool_t* x2Hits = new Bool_t [fHodo->GetNPaddles(2)];
Bool_t* y2Hits = new Bool_t [fHodo->GetNPaddles(3)];
for (UInt_t j = 0; j < fHodo->GetNPaddles(2); j++ ){
x2Hits[j] = kFALSE;
}
for (UInt_t j = 0; j < fHodo->GetNPaddles(3); j++ ){
y2Hits[j] = kFALSE;
}
for (Int_t rawindex=0; rawindex<fHodo->GetTotHits(); rawindex++) {
Int_t ip = fHodo->GetGoodRawPlane(rawindex);
if(ip==2) { // X2
Int_t goodRawPad = fHodo->GetGoodRawPad(rawindex);
x2Hits[goodRawPad] = kTRUE;
} else if (ip==3) { // Y2
Int_t goodRawPad = fHodo->GetGoodRawPad(rawindex);
y2Hits[goodRawPad] = kTRUE;
}
}
for (Int_t itrack = 0; itrack < fNtracks; itrack++ ){
Double_t chi2PerDeg;
THaTrack* aTrack = static_cast<THaTrack*>( fTracks->At(itrack) );
if (!aTrack) return -1;
if ( aTrack->GetNDoF() > fSelNDegreesMin ){
chi2PerDeg = aTrack->GetChi2() / aTrack->GetNDoF();
if( ( aTrack->GetDedx() > fSeldEdX1Min ) &&
( aTrack->GetDedx() < fSeldEdX1Max ) &&
( aTrack->GetBeta() > fSelBetaMin ) &&
( aTrack->GetBeta() < fSelBetaMax ) &&
( aTrack->GetEnergy() > fSelEtMin ) &&
( aTrack->GetEnergy() < fSelEtMax ) )
{
Int_t x2D, y2D;
if ( fNtracks > 1 ){
Double_t hitpos3 = aTrack->GetX() + aTrack->GetTheta() * ( fScin2XZpos + 0.5 * fScin2XdZpos );
Int_t icounter3 = TMath::Nint( ( hitpos3 - fHodo->GetPlaneCenter(2) ) / fHodo->GetPlaneSpacing(2) ) + 1;
Int_t hitCnt3 = TMath::Max( TMath::Min(icounter3, (Int_t) fHodo->GetNPaddles(2) ) , 1); // scin_2x_nr = 16
// fHitDist3 = fHitPos3 - ( fHodo->GetPlaneSpacing(2) * ( hitCnt3 - 1 ) + fHodo->GetPlaneCenter(2) );
Double_t hitpos4 = aTrack->GetY() + aTrack->GetPhi() * ( fScin2YZpos + 0.5 * fScin2YdZpos );
Int_t icounter4 = TMath::Nint( ( fHodo->GetPlaneCenter(3) - hitpos4 ) / fHodo->GetPlaneSpacing(3) ) + 1;
Int_t hitCnt4 = TMath::Max( TMath::Min(icounter4, (Int_t) fHodo->GetNPaddles(3) ) , 1); // scin_2y_nr = 10
// fHitDist4 = fHitPos4 - ( fHodo->GetPlaneCenter(3) - fHodo->GetPlaneSpacing(3) * ( hitCnt4 - 1 ) );
// Plane 3
Int_t mindiff=1000;
for (UInt_t i = 0; i < fHodo->GetNPaddles(2); i++ ){
if ( x2Hits[i] ) {
Int_t diff = TMath::Abs((Int_t)hitCnt3-(Int_t)i-1);
if (diff < mindiff) mindiff = diff;
}
}
if(mindiff < 1000) {
x2D = mindiff;
} else {
x2D = 0; // Is this what we really want if there were no hits on this plane?
}
// Plane 4
mindiff = 1000;
for (UInt_t i = 0; i < fHodo->GetNPaddles(3); i++ ){ if ( y2Hits[i] ) {
Int_t diff = TMath::Abs((Int_t)hitCnt4-(Int_t)i-1);
if (diff < mindiff) mindiff = diff;
}
}
if(mindiff < 1000) {
y2D = mindiff;
} else {
y2D = 0; // Is this what we really want if there were no hits on this plane?
}
} else { // Only a single track
x2D = 0.;
y2D = 0.;
}
if ( y2D <= y2Dmin ) {
if ( y2D < y2Dmin ) {
x2Dmin = 100;
chi2Min = 10000000000.;
} // y2D min
if ( x2D <= x2Dmin ){
if ( x2D < x2Dmin ){
chi2Min = 10000000000.0;
} // condition x2D
if ( chi2PerDeg < chi2Min ){
fGoodTrack = itrack; // fGoodTrack = itrack
y2Dmin = y2D;
x2Dmin = x2D;
chi2Min = chi2PerDeg;
fGoldenTrack = static_cast<THaTrack*>( fTracks->At( fGoodTrack ) );
fTrkIfo = *fGoldenTrack;
fTrk = fGoldenTrack;
}
} // condition x2D
} // condition y2D
} // conditions for dedx, beta and trac energy
} // confition for fNFreeFP greater than fSelNDegreesMin
} // loop over tracks
// Fall back to using track with minimum chi2
if ( fGoodTrack == -1 ){
chi2Min = 10000000000.0;
for (Int_t iitrack = 0; iitrack < fNtracks; iitrack++ ){
Double_t chi2PerDeg;
THaTrack* aTrack = dynamic_cast<THaTrack*>( fTracks->At(iitrack) );
if (!aTrack) return -1;
if ( aTrack->GetNDoF() > fSelNDegreesMin ){
chi2PerDeg = aTrack->GetChi2() / aTrack->GetNDoF();
if ( chi2PerDeg < chi2Min ){
fGoodTrack = iitrack;
chi2Min = chi2PerDeg;
fGoldenTrack = aTrack;
fTrkIfo = *fGoldenTrack;
fTrk = fGoldenTrack;
}
}
} // loop over trakcs
}
} else // Condition for fNtrack > 0 fGoldenTrack = NULL;
return(0);
}
//_____________________________________________________________________________
Int_t THcHallCSpectrometer::BestTrackUsingPrune()
{
Int_t nGood;
Double_t chi2Min;
if ( fNtracks > 0 ) {
chi2Min = 10000000000.0;
fGoodTrack = 0;
Bool_t* keep = new Bool_t [fNtracks];
Int_t* reject = new Int_t [fNtracks];
THaTrack *testTracks[fNtracks];
// ! Initialize all tracks to be good
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
keep[ptrack] = kTRUE;
reject[ptrack] = 0;
testTracks[ptrack] = static_cast<THaTrack*>( fTracks->At(ptrack) );
if (!testTracks[ptrack]) return -1;
}
// ! Prune on xptar
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( TMath::Abs( testTracks[ptrack]->GetTTheta() ) < fPruneXp ) && ( keep[ptrack] ) ){
nGood ++;
}
}
if ( nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( TMath::Abs( testTracks[ptrack]->GetTTheta() ) >= fPruneXp ){
keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 1;
}
}
}
// ! Prune on yptar
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( TMath::Abs( testTracks[ptrack]->GetTPhi() ) < fPruneYp ) && ( keep[ptrack] ) ){
nGood ++;
}
}
if (nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( TMath::Abs( testTracks[ptrack]->GetTPhi() ) >= fPruneYp ){
keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 2;
}
}
}
// ! Prune on ytar
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( TMath::Abs( testTracks[ptrack]->GetTY() ) < fPruneYtar ) && ( keep[ptrack] ) ){
nGood ++;
}
}
if (nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( TMath::Abs( testTracks[ptrack]->GetTY() ) >= fPruneYtar ){ keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 10;
}
}
}
// ! Prune on delta
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( TMath::Abs( testTracks[ptrack]->GetDp() ) < fPruneDelta ) && ( keep[ptrack] ) ){
nGood ++;
}
}
if (nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( TMath::Abs( testTracks[ptrack]->GetDp() ) >= fPruneDelta ){
keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 20;
}
}
}
// ! Prune on beta
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
Double_t p = testTracks[ptrack]->GetP();
Double_t betaP = p / TMath::Sqrt( p * p + fPartMass * fPartMass );
if ( ( TMath::Abs( testTracks[ptrack]->GetBeta() - betaP ) < fPruneBeta ) && ( keep[ptrack] ) ){
nGood ++;
}
}
if (nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
Double_t p = testTracks[ptrack]->GetP();
Double_t betaP = p / TMath::Sqrt( p * p + fPartMass * fPartMass );
if ( TMath::Abs( testTracks[ptrack]->GetBeta() - betaP ) >= fPruneBeta ) {
keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 100;
}
}
}
// ! Prune on deg. freedom for track chisq
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( testTracks[ptrack]->GetNDoF() >= fPruneDf ) && ( keep[ptrack] ) ){
nGood ++;
}
}
if (nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( testTracks[ptrack]->GetNDoF() < fPruneDf ){
keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 200;
}
}
}
//! Prune on num pmt hits
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( testTracks[ptrack]->GetNPMT() >= fPruneNPMT ) && ( keep[ptrack] ) ){
nGood ++;
}
}
if (nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( testTracks[ptrack]->GetNPMT() < fPruneNPMT ){
keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 100000; }
}
}
// ! Prune on beta chisqr
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( testTracks[ptrack]->GetBetaChi2() < fPruneChiBeta ) &&
( testTracks[ptrack]->GetBetaChi2() > 0.01 ) && ( keep[ptrack] ) ){
nGood ++;
}
}
if (nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( testTracks[ptrack]->GetBetaChi2() >= fPruneChiBeta ) ||
( testTracks[ptrack]->GetBetaChi2() <= 0.01 ) ){
keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 1000;
}
}
}
// ! Prune on fptime
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( TMath::Abs( testTracks[ptrack]->GetFPTime() - fHodo->GetStartTimeCenter() ) < fPruneFpTime ) &&
( keep[ptrack] ) ){
nGood ++;
}
}
if (nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( TMath::Abs( testTracks[ptrack]->GetFPTime() - fHodo->GetStartTimeCenter() ) >= fPruneFpTime ) {
keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 2000;
}
}
}
// ! Prune on Y2 being hit
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( testTracks[ptrack]->GetGoodPlane4() == 1 ) && keep[ptrack] ) {
nGood ++;
}
}
if (nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( testTracks[ptrack]->GetGoodPlane4() != 1 ) {
keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 10000;
}
}
}
// ! Prune on X2 being hit
nGood = 0;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( ( testTracks[ptrack]->GetGoodPlane3() == 1 ) && keep[ptrack] ) {
nGood ++;
}
}
if (nGood > 0 ) {
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
if ( testTracks[ptrack]->GetGoodPlane3() != 1 ) {
keep[ptrack] = kFALSE;
reject[ptrack] = reject[ptrack] + 20000;
}
}
}
// ! Pick track with best chisq if more than one track passed prune tests
Double_t chi2PerDeg = 0.;
for (Int_t ptrack = 0; ptrack < fNtracks; ptrack++ ){
chi2PerDeg = testTracks[ptrack]->GetChi2() / testTracks[ptrack]->GetNDoF();
if ( ( chi2PerDeg < chi2Min ) && ( keep[ptrack] ) ){
fGoodTrack = ptrack;
chi2Min = chi2PerDeg;
}
}
fGoldenTrack = static_cast<THaTrack*>( fTracks->At(fGoodTrack) );
fTrkIfo = *fGoldenTrack;
fTrk = fGoldenTrack;
} else // Condition for fNtrack > 0
fGoldenTrack = NULL;
return(0);
}
//_____________________________________________________________________________
Int_t THcHallCSpectrometer::TrackTimes( TClonesArray* Tracks ) {
// Do the actual track-timing (beta) calculation.
// Use multiple scintillators to average together and get "best" time at S1.
//
// To be useful, a meaningful timing resolution should be assigned
// to each Scintillator object (part of the database).
return 0;
}
//_____________________________________________________________________________
Int_t THcHallCSpectrometer::ReadRunDatabase( const TDatime& date )
{
// Override THaSpectrometer with nop method. All needed kinamatics
// read in ReadDatabase.
return kOK;
}
//_____________________________________________________________________________
ClassImp(THcHallCSpectrometer)