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Public Types | Public Member Functions | Protected Member Functions

MuonResidualsAngleFitter Class Reference

#include <MuonResidualsAngleFitter.h>

Inheritance diagram for MuonResidualsAngleFitter:
MuonResidualsFitter

List of all members.

Public Types

enum  {
  kAngle = 0, kXControl, kYControl, kSigma,
  kGamma, kNPar
}
enum  { kResidual = 0, kXAngle, kYAngle, kNData }

Public Member Functions

bool fit (Alignable *ali)
 MuonResidualsAngleFitter (int residualsModel, int minHitsPerRegion, int useResiduals, bool weightAlignment=true)
int ndata ()
int npar ()
double plot (std::string name, TFileDirectory *dir, Alignable *ali)
double sumofweights ()
int type () const

Protected Member Functions

void inform (TMinuit *tMinuit)

Detailed Description

Date:
2011/10/12 23:18:05
Revision:
1.11
Author:
J. Pivarski - Texas A&M University <pivarski@physics.tamu.edu>

Definition at line 12 of file MuonResidualsAngleFitter.h.


Member Enumeration Documentation

anonymous enum
Enumerator:
kAngle 
kXControl 
kYControl 
kSigma 
kGamma 
kNPar 

Definition at line 14 of file MuonResidualsAngleFitter.h.

anonymous enum
Enumerator:
kResidual 
kXAngle 
kYAngle 
kNData 

Definition at line 23 of file MuonResidualsAngleFitter.h.


Constructor & Destructor Documentation

MuonResidualsAngleFitter::MuonResidualsAngleFitter ( int  residualsModel,
int  minHitsPerRegion,
int  useResiduals,
bool  weightAlignment = true 
) [inline]

Definition at line 30 of file MuonResidualsAngleFitter.h.


Member Function Documentation

bool MuonResidualsAngleFitter::fit ( Alignable ali) [virtual]

Implements MuonResidualsFitter.

Definition at line 40 of file MuonResidualsAngleFitter.cc.

References MuonResidualsFitter::dofit(), MuonResidualsFitter::initialize_table(), kAngle, kGamma, MuonResidualsFitter::kGaussPowerTails, MuonResidualsFitter::kPureGaussian, kResidual, kSigma, kXControl, kYControl, MuonResidualsFitter::m_minHits, timingPdfMaker::mean, MuonResidualsAngleFitter_FCN(), N, funct::pow(), MuonResidualsFitter::residuals_begin(), MuonResidualsFitter::residuals_end(), MuonResidualsFitter::residualsModel(), mathSSE::sqrt(), dqm_diff::start, plotscripts::stdev(), relval_parameters_module::step, AlCaHLTBitMon_QueryRunRegistry::string, makeMuonMisalignmentScenario::sum_x, and makeMuonMisalignmentScenario::sum_xx.

                                                 {
  initialize_table();  // if not already initialized

  double sum_x = 0.;
  double sum_xx = 0.;
  int N = 0;

  for (std::vector<double*>::const_iterator resiter = residuals_begin();  resiter != residuals_end();  ++resiter) {
    const double residual = (*resiter)[kResidual];
//     const double xangle = (*resiter)[kXAngle];
//     const double yangle = (*resiter)[kYAngle];

    if (fabs(residual) < 0.1) {  // truncate at 100 mrad
      sum_x += residual;
      sum_xx += residual*residual;
      N++;
    }
  }

  if (N < m_minHits) return false;

  // truncated mean and stdev to seed the fit
  double mean = sum_x/double(N);
  double stdev = sqrt(sum_xx/double(N) - pow(sum_x/double(N), 2));

  // refine the standard deviation calculation
  sum_x = 0.;
  sum_xx = 0.;
  N = 0;
  for (std::vector<double*>::const_iterator resiter = residuals_begin();  resiter != residuals_end();  ++resiter) {
    const double residual = (*resiter)[kResidual];
    if (mean - 1.5*stdev < residual  &&  residual < mean + 1.5*stdev) {
      sum_x += residual;
      sum_xx += residual*residual;
      N++;
    }
  }
  mean = sum_x/double(N);
  stdev = sqrt(sum_xx/double(N) - pow(sum_x/double(N), 2));

  sum_x = 0.;
  sum_xx = 0.;
  N = 0;
  for (std::vector<double*>::const_iterator resiter = residuals_begin();  resiter != residuals_end();  ++resiter) {
    const double residual = (*resiter)[kResidual];
    if (mean - 1.5*stdev < residual  &&  residual < mean + 1.5*stdev) {
      sum_x += residual;
      sum_xx += residual*residual;
      N++;
    }
  }
  mean = sum_x/double(N);
  stdev = sqrt(sum_xx/double(N) - pow(sum_x/double(N), 2));

  std::vector<int> parNum;
  std::vector<std::string> parName;
  std::vector<double> start;
  std::vector<double> step;
  std::vector<double> low;
  std::vector<double> high;

  parNum.push_back(kAngle);     parName.push_back(std::string("angle"));     start.push_back(mean);     step.push_back(0.1);               low.push_back(0.);    high.push_back(0.);
  parNum.push_back(kXControl);  parName.push_back(std::string("xcontrol"));  start.push_back(0.);       step.push_back(0.1);               low.push_back(0.);    high.push_back(0.);
  parNum.push_back(kYControl);  parName.push_back(std::string("ycontrol"));  start.push_back(0.);       step.push_back(0.1);               low.push_back(0.);    high.push_back(0.);
  parNum.push_back(kSigma);     parName.push_back(std::string("sigma"));     start.push_back(stdev);  step.push_back(0.1*stdev);       low.push_back(0.);    high.push_back(0.);
  if (residualsModel() != kPureGaussian && residualsModel() != kGaussPowerTails) {
  parNum.push_back(kGamma);     parName.push_back(std::string("gamma"));     start.push_back(stdev);  step.push_back(0.1*stdev);         low.push_back(0.);    high.push_back(0.);
  }

  return dofit(&MuonResidualsAngleFitter_FCN, parNum, parName, start, step, low, high);
}
void MuonResidualsAngleFitter::inform ( TMinuit *  tMinuit) [protected, virtual]
int MuonResidualsAngleFitter::ndata ( ) [inline, virtual]

Implements MuonResidualsFitter.

Definition at line 40 of file MuonResidualsAngleFitter.h.

References kNData.

{ return kNData; }
int MuonResidualsAngleFitter::npar ( ) [inline, virtual]
double MuonResidualsAngleFitter::plot ( std::string  name,
TFileDirectory dir,
Alignable ali 
) [virtual]

Implements MuonResidualsFitter.

Definition at line 112 of file MuonResidualsAngleFitter.cc.

References kAngle, kGamma, MuonResidualsFitter::kGaussPowerTails, MuonResidualsFitter::kPowerLawTails, MuonResidualsFitter::kPureGaussian, kResidual, MuonResidualsFitter::kROOTVoigt, kSigma, kXAngle, kXControl, kYAngle, kYControl, TFileDirectory::make(), MuonResidualsFitter_GaussPowerTails_TF1(), MuonResidualsFitter_powerLawTails_TF1(), MuonResidualsFitter_pureGaussian_TF1(), MuonResidualsFitter_ROOTVoigt_TF1(), NULL, MuonResidualsFitter::numResiduals(), MuonResidualsFitter::residuals_begin(), MuonResidualsFitter::residuals_end(), MuonResidualsFitter::residualsModel(), AlCaHLTBitMon_QueryRunRegistry::string, and MuonResidualsFitter::value().

                                                                                         {
  std::stringstream raw_name, narrowed_name, xcontrol_name, ycontrol_name;
  raw_name << name << "_raw";
  narrowed_name << name << "_narrowed";
  xcontrol_name << name << "_xcontrol";
  ycontrol_name << name << "_ycontrol";

  TH1F *raw_hist = dir->make<TH1F>(raw_name.str().c_str(), (raw_name.str() + std::string(" (mrad)")).c_str(), 100, -100., 100.);
  TH1F *narrowed_hist = dir->make<TH1F>(narrowed_name.str().c_str(), (narrowed_name.str() + std::string(" (mrad)")).c_str(), 100, -100., 100.);
  TProfile *xcontrol_hist = dir->make<TProfile>(xcontrol_name.str().c_str(), (xcontrol_name.str() + std::string(" (mrad)")).c_str(), 100, -1., 1.);
  TProfile *ycontrol_hist = dir->make<TProfile>(ycontrol_name.str().c_str(), (ycontrol_name.str() + std::string(" (mrad)")).c_str(), 100, -1., 1.);

  narrowed_name << "fit";
  xcontrol_name << "fit";
  ycontrol_name << "fit";

  double scale_factor = double(numResiduals()) * (100. - -100.)/100;   // (max - min)/nbins

  TF1 *narrowed_fit = NULL;
  if (residualsModel() == kPureGaussian) {
    narrowed_fit = new TF1(narrowed_name.str().c_str(), MuonResidualsFitter_pureGaussian_TF1, -100., 100., 3);
    narrowed_fit->SetParameters(scale_factor, value(kAngle) * 1000., value(kSigma) * 1000.);
    narrowed_fit->Write();
  }
  else if (residualsModel() == kPowerLawTails) {
    narrowed_fit = new TF1(narrowed_name.str().c_str(), MuonResidualsFitter_powerLawTails_TF1, -100., 100., 4);
    narrowed_fit->SetParameters(scale_factor, value(kAngle) * 1000., value(kSigma) * 1000., value(kGamma) * 1000.);
    narrowed_fit->Write();
  }
  else if (residualsModel() == kROOTVoigt) {
    narrowed_fit = new TF1(narrowed_name.str().c_str(), MuonResidualsFitter_ROOTVoigt_TF1, -100., 100., 4);
    narrowed_fit->SetParameters(scale_factor, value(kAngle) * 1000., value(kSigma) * 1000., value(kGamma) * 1000.);
    narrowed_fit->Write();
  }
  else if (residualsModel() == kGaussPowerTails) {
    narrowed_fit = new TF1(narrowed_name.str().c_str(), MuonResidualsFitter_GaussPowerTails_TF1, -100., 100., 3);
    narrowed_fit->SetParameters(scale_factor, value(kAngle) * 1000., value(kSigma) * 1000.);
    narrowed_fit->Write();
  }

  TF1 *xcontrol_fit = new TF1(xcontrol_name.str().c_str(), "[0]+x*[1]", -1., 1.);
  xcontrol_fit->SetParameters(value(kAngle) * 1000., value(kXControl) * 1000.);
  xcontrol_fit->Write();

  TF1 *ycontrol_fit = new TF1(ycontrol_name.str().c_str(), "[0]+x*[1]", -1., 1.);
  ycontrol_fit->SetParameters(value(kAngle) * 1000., value(kYControl) * 1000.);
  ycontrol_fit->Write();

  for (std::vector<double*>::const_iterator resiter = residuals_begin();  resiter != residuals_end();  ++resiter) {
    const double raw_residual = (*resiter)[kResidual];
    const double xangle = (*resiter)[kXAngle];
    const double yangle = (*resiter)[kYAngle];

    double xangle_correction = value(kXControl) * xangle;
    double yangle_correction = value(kYControl) * yangle;
    double corrected_residual = raw_residual - xangle_correction - yangle_correction;

    raw_hist->Fill(raw_residual * 1000.);
    narrowed_hist->Fill(corrected_residual * 1000.);

    xcontrol_hist->Fill(xangle, (raw_residual - yangle_correction) * 1000.);
    ycontrol_hist->Fill(yangle, (raw_residual - xangle_correction) * 1000.);
  }

  return 0.;
}
double MuonResidualsAngleFitter::sumofweights ( ) [inline, virtual]

Implements MuonResidualsFitter.

Definition at line 43 of file MuonResidualsAngleFitter.h.

References MuonResidualsFitter::numResiduals().

{ return numResiduals(); }
int MuonResidualsAngleFitter::type ( ) const [inline, virtual]