C++ PHG4CylinderSubsystem类代码示例

//! for visualization purpose only
double
CEmc_Vis(PHG4Reco* g4Reco, double radius, const int crossings, const int absorberactive = 0)
{
  double emc_inner_radius = 95.; // emc inner radius from engineering drawing
  double cemcthickness = 12.7;
  double emc_outer_radius = emc_inner_radius + cemcthickness; // outer radius
  
  if (radius > emc_inner_radius) {
    cout << "inconsistency: preshower radius+thickness: " << radius 
	 << " larger than emc inner radius: " <<  emc_inner_radius
	 << endl;
    gSystem->Exit(-1);
  }
  
  //---------------
  // Load libraries
  //---------------

  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

  // the radii are only to determined the thickness of the cemc
  radius = emc_inner_radius;

  int ilayer = Min_cemc_layer;
  PHG4SpacalSubsystem *cemc;
  cemc = new PHG4SpacalSubsystem("CEMC", ilayer);

  cemc ->get_geom().set_radius(emc_inner_radius);
  cemc ->get_geom().set_thickness(cemcthickness);
  cemc ->get_geom().set_virualize_fiber(true);
  cemc ->get_geom().set_construction_verbose(2);

  cemc->SetActive();
  cemc->SuperDetector("CEMC");
  if (absorberactive)  cemc->SetAbsorberActive();
  cemc->OverlapCheck(overlapcheck);

  g4Reco->registerSubsystem( cemc );

  if (ilayer > Max_cemc_layer)
    {
      cout << "layer discrepancy, current layer " << ilayer
           << " max cemc layer: " << Max_cemc_layer << endl;
    }

  radius += cemcthickness;
  radius += no_overlapp;
  
  PHG4CylinderSubsystem *cyl = new PHG4CylinderSubsystem("EMCELECTRONICS", 0);
  cyl->SetRadius(radius);
  cyl->SetMaterial("G4_TEFLON"); // plastic
  cyl->SetThickness(0.5);
  if (absorberactive)  cyl->SetActive();
  g4Reco->registerSubsystem( cyl );
  radius += 0.5;
  radius += no_overlapp;
  
  return radius;
}

//! A rough version of the inner HCal support ring, from Richie's CAD drawing. - Jin
void HCalInner_SupportRing(PHG4Reco* g4Reco,
			   const int absorberactive = 0) {
  
  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

  const double z_ring1 = (2025 + 2050) / 2. / 10.;
  const double z_ring2 = (2150 + 2175) / 2. / 10.;
  const double dz = 25. / 10.;
  const double innerradius = 116.;
  const double maxradius = 178.0 - 0.001; // avoid touching the outer HCal envelop volumne

  const double z_rings[] =
    { -z_ring2, -z_ring1, z_ring1, z_ring2, 0, 0, 0, 0 };

  PHG4CylinderSubsystem *cyl;

  for (int i = 0; i < 4; i++)
    {
      cyl = new PHG4CylinderSubsystem("HCALIN_SPT_N1", 0);
      cyl->SetPosition(0, 0, z_rings[i]);
      cyl->SuperDetector("HCALIN_SPT");
      cyl->SetRadius(innerradius);
      cyl->SetLengthViaRapidityCoverage(false);
      cyl->SetLength(dz);
      cyl->SetMaterial("G4_Fe"); // use 1 radiation length Al for magnet thickness
      cyl->SetThickness(maxradius - innerradius);
      if (absorberactive)
        cyl->SetActive();
      g4Reco->registerSubsystem(cyl);
    }
  
  return;
}

//! A rough version of the inner HCal support ring, from Richie's CAD drawing. - Jin
void HCalInner_SupportRing(PHG4Reco* g4Reco,
			   const int absorberactive = 0) {
  
  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

  const double z_ring1 = (2025 + 2050) / 2. / 10.;
  const double z_ring2 = (2150 + 2175) / 2. / 10.;
  const double dz = 25. / 10.;
  const double innerradius_sphenix = 116.;
  const double innerradius_ephenix_hadronside = 138.;
  const double maxradius = 178.0 - 0.001; // avoid touching the outer HCal envelop volumne
  const double z_rings[] =
    { -z_ring2, -z_ring1, z_ring1, z_ring2 };

  PHG4CylinderSubsystem *cyl;

  for (int i = 0; i < 4; i++)
    {
      double innerradius = innerradius_sphenix;
      if ( z_rings[i] > 0 && inner_hcal_eic == 1)
      {
        innerradius = innerradius_ephenix_hadronside;
      }
      cyl = new PHG4CylinderSubsystem("HCALIN_SPT_N1", i);
      cyl->set_double_param("place_z",z_rings[i]);
      cyl->SuperDetector("HCALIN_SPT");
      cyl->set_double_param("radius",innerradius);
      cyl->set_int_param("lengthviarapidity",0);
      cyl->set_double_param("length",dz);
      cyl->set_string_param("material","SS310");
      cyl->set_double_param("thickness",maxradius - innerradius);
      if (absorberactive)
	{
	  cyl->SetActive();
	}
      g4Reco->registerSubsystem(cyl);
    }
  
  return;
}

double Pipe(PHG4Reco* g4Reco,
	    double radius,
	    const int absorberactive = 0,
	    int verbosity = 0) {

  double pipe_radius    = 2.16;   // 2.16 cm based on spec sheet
  double pipe_thickness = 0.0760; // 760 um based on spec sheet
  double pipe_length = g4Reco->GetWorldSizeZ() - no_overlapp; // entire volume
  if (radius > pipe_radius) {
    cout << "inconsistency: radius: " << radius 
	 << " larger than Pipe inner radius: " << pipe_radius << endl;
    gSystem->Exit(-1);
  }
  
  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

  PHG4CylinderSubsystem *cyl = new PHG4CylinderSubsystem("PIPE", 0);
  cyl->SetRadius(pipe_radius);
  cyl->SetLengthViaRapidityCoverage(false);
  cyl->SetLength(pipe_length);
  cyl->SetMaterial("G4_Be");
  cyl->SetThickness(pipe_thickness);
  cyl->SuperDetector("PIPE");
  if (absorberactive)  cyl->SetActive();
  g4Reco->registerSubsystem( cyl );

  radius = pipe_radius + pipe_thickness;
  
  if (verbosity >= 0) {
    cout << "=========================== G4_Pipe.C::Pipe() =============================" << endl;
    cout << " PIPE Material Description:" << endl;
    cout << "  inner radius = " << pipe_radius << " cm" << endl;
    cout << "  thickness = " << pipe_thickness << " cm" << endl;
    cout << "  outer radius = " << pipe_radius + pipe_thickness << " cm" << endl;
    cout << "  length = " << pipe_length << " cm" << endl;
    cout << "===========================================================================" << endl;
  }

  radius += no_overlapp;
  
  return radius; 
}

//! EMCal setup macro - 1D azimuthal projective SPACAL
double
CEmc_1DProjectiveSpacal(PHG4Reco* g4Reco, double radius, const int crossings, const int absorberactive = 0)
{
  double emc_inner_radius = 95.; // emc inner radius from engineering drawing
  double cemcthickness = 12.7;
  double emc_outer_radius = emc_inner_radius + cemcthickness; // outer radius

  
  if (radius > emc_inner_radius) {
    cout << "inconsistency: preshower radius+thickness: " << radius 
	 << " larger than emc inner radius: " <<  emc_inner_radius
	 << endl;
    gSystem->Exit(-1);
  }
  
  //---------------
  // Load libraries
  //---------------

  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

//  boundary check
  if (radius> emc_inner_radius - 1.5 - no_overlapp)
    {
      cout <<"G4_CEmc_Spacal.C::CEmc() - expect radius < "<<emc_inner_radius - 1.5 - no_overlapp<<" to install SPACAL"<<endl;
      exit(1);
    }
  radius = emc_inner_radius - 1.5 - no_overlapp;

  // 1.5cm thick teflon as an approximation for EMCAl light collection + electronics (10% X0 total estimated)
  PHG4CylinderSubsystem *cyl = new PHG4CylinderSubsystem("CEMC_ELECTRONICS", 0);
  cyl->SuperDetector("CEMC_ELECTRONICS");
  cyl->set_double_param("radius",radius);
  cyl->set_string_param("material","G4_TEFLON");
  cyl->set_double_param("thickness",1.5);
  if (absorberactive)  cyl->SetActive();
  g4Reco->registerSubsystem( cyl );

  radius += 1.5;
  radius += no_overlapp;


  int ilayer = Min_cemc_layer;
  PHG4SpacalSubsystem *cemc;
  cemc = new PHG4SpacalSubsystem("CEMC", ilayer);

  cemc ->get_geom().set_radius(emc_inner_radius);
  cemc ->get_geom().set_thickness(cemcthickness);
  cemc ->get_geom().set_construction_verbose(1);

  cemc->SetActive();
  cemc->SuperDetector("CEMC");
  if (absorberactive)  cemc->SetAbsorberActive();
  cemc->OverlapCheck(overlapcheck);
  
  g4Reco->registerSubsystem( cemc );

  if (ilayer > Max_cemc_layer)
    {
      cout << "layer discrepancy, current layer " << ilayer
           << " max cemc layer: " << Max_cemc_layer << endl;
    }

  radius += cemcthickness;
  radius += no_overlapp;

  // 0.5cm thick Stainless Steel as an approximation for EMCAl support system
  cyl = new PHG4CylinderSubsystem("CEMC_SPT", 0);
  cyl->SuperDetector("CEMC_SPT");
  cyl->set_double_param("radius",radius);
cyl->set_string_param("material","SS310"); // SS310 Stainless Steel
 cyl->set_double_param("thickness",0.5);
  if (absorberactive)
    cyl->SetActive();
  g4Reco->registerSubsystem(cyl);

  radius += 0.5;
  radius += no_overlapp;

  return radius;
}

//! test for 2D projective SPACAL using 1D projective modules. For evaluation only
double
CEmc_Proj(PHG4Reco* g4Reco, double radius, const int crossings, const int absorberactive = 0)
{
  double emc_inner_radius = 95.; // emc inner radius from engineering drawing
  double cemcthickness = 12.9+1.5;
  double emc_outer_radius = emc_inner_radius + cemcthickness; // outer radius
  
  if (radius > emc_inner_radius) {
    cout << "inconsistency: preshower radius+thickness: " << radius 
	 << " larger than emc inner radius: " <<  emc_inner_radius
	 << endl;
    gSystem->Exit(-1);
  }
  
  //---------------
  // Load libraries
  //---------------

  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

  cout <<"Get_Spacal_Tilt() = "<<Get_Spacal_Tilt()<<endl;

  // the radii are only to determined the thickness of the cemc
  //double emc_inner_radius = radius; // emc inner radius from engineering spreadsheet
  // double cemcthickness = 12.9+1.5;
  //  double emc_outer_radius = emc_inner_radius + cemcthickness; // outer radius
  radius = emc_outer_radius;
  
  int ilayer = Min_cemc_layer;
  PHG4SpacalSubsystem *cemc;
  cemc = new PHG4SpacalSubsystem("CEMC", ilayer);

  cemc ->get_geom().set_radius(emc_inner_radius);
  cemc ->get_geom().set_thickness(cemcthickness);
  cemc ->get_geom().set_construction_verbose(2);

  cemc ->get_geom().set_config(PHG4CylinderGeom_Spacalv1::kProjective_PolarTaper);
  cemc ->get_geom().set_azimuthal_tilt(Get_Spacal_Tilt());
//  cemc ->get_geom().set_azimuthal_tilt(-2.3315/2./95*1.9);
//  cemc ->get_geom().set_azimuthal_tilt(6.28/256*2);
//  cemc ->get_geom().set_azimuthal_tilt(-6.28/256*4);
//  cemc ->get_geom().set_azimuthal_seg_visible(true);
//  cemc ->get_geom().set_virualize_fiber(false);
//  cemc ->get_geom().set_assembly_spacing(0.001);
  cemc ->get_geom().set_polar_taper_ratio(1.128);
//  cemc ->get_geom().set_polar_taper_ratio(1.123);
//  cemc ->get_geom().set_polar_taper_ratio(1.117);
//  cemc ->get_geom().set_absorber_mat("G4_AIR");
//  cemc ->get_geom().set_azimuthal_n_sec(256/2);

  cemc->SetActive();
  cemc->SuperDetector("CEMC");
  if (absorberactive)  cemc->SetAbsorberActive();
  cemc->OverlapCheck(overlapcheck);

  g4Reco->registerSubsystem( cemc );

  if (ilayer > Max_cemc_layer)
    {
      cout << "layer discrepancy, current layer " << ilayer
           << " max cemc layer: " << Max_cemc_layer << endl;
    }

  radius += cemcthickness;
  radius += no_overlapp;

  PHG4CylinderSubsystem *cyl = new PHG4CylinderSubsystem("EMCELECTRONICS", 0);
  cyl->set_double_param("radius",radius);
  cyl->set_string_param("material","G4_TEFLON");
  cyl->set_double_param("thickness",0.5);
  if (absorberactive)  cyl->SetActive();
  g4Reco->registerSubsystem( cyl );
  radius += 0.5;
  radius += no_overlapp;

  return radius;
}

//! 2D full projective SPACAL
double
CEmc_2DProjectiveSpacal(PHG4Reco *g4Reco, double radius, const int crossings,
                        const int absorberactive = 0)
{
  double emc_inner_radius = 92;  // emc inner radius from engineering drawing
  double cemcthickness = 24.00000 - no_overlapp;

  //max radius is 116 cm;
  double emc_outer_radius = emc_inner_radius + cemcthickness;  // outer radius
  assert(emc_outer_radius < 116);

  if (radius > emc_inner_radius)
  {
    cout << "inconsistency: preshower radius+thickness: " << radius
         << " larger than emc inner radius: " << emc_inner_radius << endl;
    gSystem->Exit(-1);
  }

  //---------------
  // Load libraries
  //---------------

  gSystem->Load("libg4detectors.so");

  // the radii are only to determined the thickness of the cemc
  radius = emc_inner_radius;

  //---------------
  // Load libraries
  //---------------

  // 1.5cm thick teflon as an approximation for EMCAl light collection + electronics (10% X0 total estimated)
  PHG4CylinderSubsystem *cyl = new PHG4CylinderSubsystem("CEMC_ELECTRONICS", 0);
  cyl->set_double_param("radius", radius);
  cyl->set_string_param("material", "G4_TEFLON");
  cyl->set_double_param("thickness", 1.5 - no_overlapp);
  cyl->SuperDetector("CEMC_ELECTRONICS");
  cyl->OverlapCheck(overlapcheck);
  if (absorberactive) cyl->SetActive();
  g4Reco->registerSubsystem(cyl);

  radius += 1.5;
  cemcthickness -= 1.5 + no_overlapp;

  // 0.5cm thick Stainless Steel as an approximation for EMCAl support system
  cyl = new PHG4CylinderSubsystem("CEMC_SPT", 0);
  cyl->SuperDetector("CEMC_SPT");
  cyl->set_double_param("radius", radius + cemcthickness - 0.5);
  cyl->set_string_param("material", "SS310");  // SS310 Stainless Steel
  cyl->set_double_param("thickness", 0.5 - no_overlapp);
  cyl->OverlapCheck(overlapcheck);
  if (absorberactive)
    cyl->SetActive();
  g4Reco->registerSubsystem(cyl);

  cemcthickness -= 0.5 + no_overlapp;

  //---------------
  // Load libraries
  //---------------

  int ilayer = 0;
  PHG4SpacalSubsystem *cemc;

  const bool use_2015_design = false;
  if (use_2015_design)
  {
    cemc = new PHG4SpacalSubsystem("CEMC", ilayer);

    cemc->set_int_param("config", PHG4CylinderGeom_Spacalv1::kFullProjective_2DTaper_SameLengthFiberPerTower);
    cemc->set_double_param("radius", radius);            // overwrite minimal radius
    cemc->set_double_param("thickness", cemcthickness);  // overwrite thickness
    cemc->set_int_param("azimuthal_n_sec", 32);
    //    cemc->set_int_param("construction_verbose", 2);

    cemc->SetActive();
    cemc->SuperDetector("CEMC");
    if (absorberactive)
      cemc->SetAbsorberActive();
    cemc->OverlapCheck(overlapcheck);
  }

  else
  {
    cemc = new PHG4SpacalSubsystem("CEMC", ilayer);

    cemc->set_int_param("virualize_fiber", 0);
    cemc->set_int_param("azimuthal_seg_visible", 1);
    cemc->set_int_param("construction_verbose", 0);
    cemc->Verbosity(0);

    cemc->UseCalibFiles(PHG4DetectorSubsystem::xml);
    cemc->SetCalibrationFileDir(string(getenv("CALIBRATIONROOT")) + string("/CEMC/Geometry_2017ProjTilted/"));
    cemc->set_double_param("radius", radius);            // overwrite minimal radius
    cemc->set_double_param("thickness", cemcthickness);  // overwrite thickness

    cemc->SetActive();
    cemc->SuperDetector("CEMC");
    if (absorberactive)
//.........这里部分代码省略.........

double
CEmc(PHG4Reco* g4Reco, double radius, const int crossings, const int absorberactive = 0)
{
  if (radius > 100) {
    cout << "inconsistency: radius: " << radius 
	 << " larger than ALICE CEMC inner radius: 100" << endl;
    gSystem->Exit(-1);
  }
  
  radius = 100;
  
  //---------------
  // Load libraries
  //---------------

  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

  double depth = 18*1.23; // 18 radlen, 1 radlen = 1.23 cm
  double scintiwidth = 0.176;
  double leadwidth = 0.144;

  PHG4CylinderSubsystem *cemc;

  for (int ilayer = Min_cemc_layer; ilayer <= Max_cemc_layer; ilayer++)
    {

      cemc = new PHG4CylinderSubsystem("ABSORBER_CEMC", ilayer);
      cemc->SetRadius(radius);
      cemc->SetMaterial("G4_Pb");
      cemc->SetThickness(leadwidth);
      cemc->SuperDetector("ABSORBER_CEMC");
      if (absorberactive)  cemc->SetActive();
      cemc->OverlapCheck(overlapcheck);
      g4Reco->registerSubsystem( cemc );
      radius += leadwidth;
      radius += no_overlapp;

      cemc =  new PHG4CylinderSubsystem("CEMC", ilayer);
      cemc->SetRadius(radius);
      cemc->SetMaterial("Scintillator");
      cemc->SetThickness(scintiwidth);
      cemc->SetActive();
      cemc->SuperDetector("CEMC");
      cemc->OverlapCheck(overlapcheck);
      g4Reco->registerSubsystem( cemc );

      radius += scintiwidth;
      radius += no_overlapp;
    }

  PHG4CylinderSubsystem *cyl = new PHG4CylinderSubsystem("EMCELECTRONICS", 0);
  cyl->SetRadius(radius);
  cyl->SetMaterial("G4_TEFLON"); // plastic
  cyl->SetThickness(0.5);
  if (absorberactive)  cyl->SetActive();
  g4Reco->registerSubsystem( cyl );
  radius += 0.5;
  radius += no_overlapp;
  
  return radius;
}

//! 2D full projective SPACAL
double
CEmc_2DProjectiveSpacal(PHG4Reco* g4Reco, double radius, const int crossings,
    const int absorberactive = 0)
{
  double emc_inner_radius = 95.; // emc inner radius from engineering drawing
  double cemcthickness = 21.00000 - no_overlapp;
  double emc_outer_radius = emc_inner_radius + cemcthickness; // outer radius

  if (radius > emc_inner_radius)
    {
      cout << "inconsistency: preshower radius+thickness: " << radius
          << " larger than emc inner radius: " << emc_inner_radius << endl;
      gSystem->Exit(-1);
    }

  //---------------
  // Load libraries
  //---------------

  gSystem->Load("libg4detectors.so");

  // the radii are only to determined the thickness of the cemc
  radius = emc_inner_radius;

  //---------------
  // Load libraries
  //---------------

  // 1.5cm thick teflon as an approximation for EMCAl light collection + electronics (10% X0 total estimated)
  PHG4CylinderSubsystem *cyl = new PHG4CylinderSubsystem("CEMC_ELECTRONICS", 0);
  cyl->set_double_param("radius",radius);
  cyl->set_string_param("material","G4_TEFLON");
  cyl->set_double_param("thickness",1.5- no_overlapp);
  cyl->SuperDetector("CEMC_ELECTRONICS");
  cyl->OverlapCheck(overlapcheck);
  if (absorberactive)  cyl->SetActive();
  g4Reco->registerSubsystem( cyl );

  radius += 1.5;
  cemcthickness -= 1.5+no_overlapp;


  // 0.5cm thick Stainless Steel as an approximation for EMCAl support system
  cyl = new PHG4CylinderSubsystem("CEMC_SPT", 0);
  cyl->SuperDetector("CEMC_SPT");
cyl->set_double_param("radius",radius +cemcthickness - 0.5 );
cyl->set_string_param("material","SS310"); // SS310 Stainless Steel
cyl->set_double_param("thickness",0.5 - no_overlapp);
  cyl->OverlapCheck(overlapcheck);
  if (absorberactive)
    cyl->SetActive();
  g4Reco->registerSubsystem(cyl);

  cemcthickness -= 0.5+no_overlapp;


  //---------------
  // Load libraries
  //---------------

  int ilayer = Min_cemc_layer;
  PHG4SpacalSubsystem *cemc;
  cemc = new PHG4SpacalSubsystem("CEMC", ilayer);

  cemc->get_geom().set_config(
      PHG4CylinderGeom_Spacalv1::kFullProjective_2DTaper_SameLengthFiberPerTower);

  // load from hard code map for now. Need to move to calibration file or database.
  cemc->get_geom().load_demo_sector_tower_map3();
  cemc->get_geom().set_radius(radius);
  cemc->get_geom().set_thickness(cemcthickness);
  cemc->get_geom().set_construction_verbose(1);

  cemc->SetActive();
  cemc->SuperDetector("CEMC");
  if (absorberactive)
    cemc->SetAbsorberActive();
  cemc->OverlapCheck(overlapcheck);

  g4Reco->registerSubsystem(cemc);

  if (ilayer > Max_cemc_layer)
    {
      cout << "layer discrepancy, current layer " << ilayer
          << " max cemc layer: " << Max_cemc_layer << endl;
    }

  radius += cemcthickness;
  radius += no_overlapp;

  return radius;
}

//.........这里部分代码省略.........
      
      PHG4SiliconTrackerSubsystem* sitrack = new PHG4SiliconTrackerSubsystem("SILICON_TRACKER", vpair);
      sitrack->Verbosity(verbosity);
      sitrack->SetActive(1);
      sitrack->OverlapCheck(intt_overlapcheck);
      g4Reco->registerSubsystem(sitrack);
      
      // Update the laddertype and ladder spacing configuration
      for(int i=0;i<n_intt_layer;i++)
	{
	  sitrack->set_int_param(i, "laddertype", laddertype[i]);
	  sitrack->set_int_param(i, "nladder", nladder[i]);
	  sitrack->set_double_param(i,"sensor_radius", sensor_radius[i]);  // expecting cm
	  sitrack->set_double_param(i,"offsetphi",offsetphi[i]);  // expecting degrees
	}
      
      // outer radius marker (translation back to cm)
      radius = intt_radius_max * 0.1;
    }
  
  //  int verbosity = 1;
  
  // time projection chamber layers --------------------------------------------
  
  // switch ONLY for backward compatibility with 40 layer hits files!
  if (tpc_layers_40)
    {
      n_tpc_layer_inner = 8;
      tpc_layer_thick_inner = 1.25;
      tpc_layer_rphi_count_inner = 1152;
      cout << "Using 8 inner_layers for backward comatibility" << endl;
    }

  PHG4CylinderSubsystem* cyl;

  radius = inner_cage_radius;

  double cage_length = 211.0;  // From TPC group, gives eta = 1.1 at 78 cm
  double n_rad_length_cage = 1.13e-02;
  double cage_thickness = 28.6 * n_rad_length_cage;  // Kapton X_0 = 28.6 cm  // mocks up Kapton + carbon fiber structure

  // inner field cage
  cyl = new PHG4CylinderSubsystem("SVTXSUPPORT", n_maps_layer + n_intt_layer);
  cyl->set_double_param("radius", radius);
  cyl->set_int_param("lengthviarapidity", 0);
  cyl->set_double_param("length", cage_length);
  cyl->set_string_param("material", "G4_KAPTON");
  cyl->set_double_param("thickness", cage_thickness);
  cyl->SuperDetector("SVTXSUPPORT");
  cyl->Verbosity(0);
  g4Reco->registerSubsystem(cyl);

  radius += cage_thickness;

  double inner_readout_radius = 30.;
  if (inner_readout_radius < radius) inner_readout_radius = radius;

  string tpcgas = "sPHENIX_TPC_Gas";  //  Ne(90%) CF4(10%) - defined in g4main/PHG4Reco.cc

  // Layer of inert TPC gas from 20-30 cm
  if (inner_readout_radius - radius > 0)
  {
    cyl = new PHG4CylinderSubsystem("SVTXSUPPORT", n_maps_layer + n_intt_layer + 1);
    cyl->set_double_param("radius", radius);
    cyl->set_int_param("lengthviarapidity", 0);
    cyl->set_double_param("length", cage_length);

double Magnet(PHG4Reco* g4Reco,
	      double radius,
	      const int crossings = 0,
	      const int absorberactive = 0,
	      int verbosity = 0) {

  double magnet_inner_cryostat_wall_radius = 142;
  double magnet_inner_cryostat_wall_thickness = 1;
  double magnet_outer_cryostat_wall_radius = 174.5;
  double magnet_outer_cryostat_wall_thickness = 2.5;
  double magnet_coil_radius = 150.8;
  double magnet_coil_thickness = 9.38;
  double magnet_length = 379.;
  double coil_length = 361.5;
  if (radius > magnet_inner_cryostat_wall_radius) {
    cout << "inconsistency: radius: " << radius 
	 << " larger than Magnet inner radius: " << magnet_inner_cryostat_wall_radius << endl;
    gSystem->Exit(-1);
  }
  
  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

  radius = magnet_inner_cryostat_wall_radius;
  PHG4CylinderSubsystem *cyl = new PHG4CylinderSubsystem("MAGNET", 0);
  cyl->SetRadius(magnet_inner_cryostat_wall_radius);
  cyl->SetLengthViaRapidityCoverage(false);
  cyl->SetLength(magnet_length);
  cyl->SetMaterial("Al5083"); // use 1 radiation length Al for magnet thickness
  cyl->SetThickness(magnet_inner_cryostat_wall_thickness);
  cyl->SuperDetector("MAGNET");
  if (absorberactive)  cyl->SetActive();
  g4Reco->registerSubsystem( cyl );

  cyl = new PHG4CylinderSubsystem("MAGNET", 1);
  cyl->SetRadius(magnet_coil_radius);
  cyl->SetLengthViaRapidityCoverage(false);
  cyl->SetLength(coil_length);
  cyl->SetMaterial("Al5083"); // use 1 radiation length Al for magnet thickness
  cyl->SetThickness(magnet_coil_thickness);
  cyl->SuperDetector("MAGNET");
  if (absorberactive)  cyl->SetActive();
  g4Reco->registerSubsystem( cyl );

  cyl = new PHG4CylinderSubsystem("MAGNET", 2);
  cyl->SetRadius(magnet_outer_cryostat_wall_radius);
  cyl->SetLengthViaRapidityCoverage(false);
  cyl->SetLength(magnet_length);
  cyl->SetMaterial("Al5083"); // use 1 radiation length Al for magnet thickness
  cyl->SetThickness(magnet_outer_cryostat_wall_thickness);
  cyl->SuperDetector("MAGNET");
  if (absorberactive)  cyl->SetActive();
  g4Reco->registerSubsystem( cyl );

  radius = magnet_outer_cryostat_wall_radius + magnet_outer_cryostat_wall_thickness; // outside of magnet
  
  if (verbosity > 0) {
    cout << "========================= G4_Magnet.C::Magnet() ===========================" << endl;
    cout << " MAGNET Material Description:" << endl;
    cout << "  inner radius = " << magnet_inner_cryostat_wall_radius << " cm" << endl;
    cout << "  outer radius = " << magnet_outer_cryostat_wall_radius + magnet_outer_cryostat_wall_thickness << " cm" << endl;
    cout << "  length = " << magnet_length << " cm" << endl;
    cout << "===========================================================================" << endl;
  }

  radius += no_overlapp;
  
  return radius; 
}

int G4Setup(const int absorberactive = 0,
	    const string &field ="1.5",
	    const EDecayType decayType = TPythia6Decayer::kAll,
	    const bool do_svtx = true,
	    const bool do_preshower = false,
	    const bool do_cemc = true,
	    const bool do_hcalin = true,
	    const bool do_magnet = true,
	    const bool do_hcalout = true,
	    const bool do_pipe = true,
	    const bool do_bbc = true,
	    const bool do_FEMC = false,
	    const bool do_FHCAL = false,
     	    const float magfield_rescale = 1.0) {
  
  //---------------
  // Load libraries
  //---------------

  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

  //---------------
  // Fun4All server
  //---------------

  Fun4AllServer *se = Fun4AllServer::instance();

  PHG4Reco* g4Reco = new PHG4Reco();
  g4Reco->set_rapidity_coverage(1.1); // according to drawings

  if (decayType != TPythia6Decayer::kAll) {
    g4Reco->set_force_decay(decayType);
  }
  
  double fieldstrength;
  istringstream stringline(field);
  stringline >> fieldstrength;
  if (stringline.fail()) { // conversion to double fails -> we have a string

    if (field.find("sPHENIX.root") != string::npos) {
      g4Reco->set_field_map(field, 1);
    } else {
      g4Reco->set_field_map(field, 2);
    }
  } else {
    g4Reco->set_field(fieldstrength); // use const soleniodal field
  }
  g4Reco->set_field_rescale(magfield_rescale);
  
  double radius = 0.;

  //----------------------------------------
  // PIPE
  if (do_pipe) radius = Pipe(g4Reco, radius, absorberactive);
  
  //----------------------------------------
  // SVTX
  if (do_svtx) radius = Svtx(g4Reco, radius, absorberactive);

  //----------------------------------------
  // PRESHOWER
  
  if (do_preshower) radius = PreShower(g4Reco, radius, absorberactive);

  //----------------------------------------
  // CEMC
//
  if (do_cemc) radius = CEmc(g4Reco, radius, 8, absorberactive);
//  if (do_cemc) radius = CEmc_Vis(g4Reco, radius, 8, absorberactive);// for visualization substructure of SPACAL, slow to render
  
  //----------------------------------------
  // HCALIN
  
  if (do_hcalin) radius = HCalInner(g4Reco, radius, 4, absorberactive);

  //----------------------------------------
  // MAGNET
  
  if (do_magnet) radius = Magnet(g4Reco, radius, 0, absorberactive);

  //----------------------------------------
  // HCALOUT
  
  if (do_hcalout) radius = HCalOuter(g4Reco, radius, 4, absorberactive);

  //----------------------------------------
  // FEMC

  if ( do_FEMC )
    FEMCSetup(g4Reco, absorberactive);

  //----------------------------------------
  // FHCAL

  if ( do_FHCAL )
    FHCALSetup(g4Reco, absorberactive);

  // sPHENIX forward flux return(s)
  PHG4CylinderSubsystem *flux_return_plus = new PHG4CylinderSubsystem("FWDFLUXRET", 0);
//.........这里部分代码省略.........

double Svtx(PHG4Reco* g4Reco, double radius, 
	    const int absorberactive = 0,
	    int verbosity = 0) {
  
  float svtx_inner_radius = 2.71;
  
  if (radius > svtx_inner_radius) {
    cout << "inconsistency: radius: " << radius 
	 << " larger than SVTX inner radius: " << svtx_inner_radius << endl;
    gSystem->Exit(-1);
  }
 
  //---------------
  // Load libraries
  //---------------

  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

  PHG4CylinderSubsystem *cyl;
 
  //======================================================================================================
  // The thicknesses from Yasuyuki on June 12, 2014 are as follows:
  // For Si 1mm = 1.07% X_0
  // For Cu 1mm = 6.96% X_0
  // The thickness of the tracking layers is:
  // Pixels:         1.3% X_0  (0.21% sensor +  1.07% support)  sensor = 200 mc Si, support = 154 mc Cu
  // Stripixel:      5%   X_0  (0.67% sensor + 4.3% support)    sensor = 624 mc Si, support = 618 mc Cu
  // Outer strips:   2%   X_0 (conservative)  (0.34% sensor + 1.66% support) sensor = 320 mc Si, support = 238 mc Cu
  //=======================================================================================================

  double si_thickness[7] = {0.02, 0.02, 0.032, 0.032, 0.032, 0.032, 0.032};
  double svxrad[7] = {svtx_inner_radius, 4.63, 9.5, 10.5, 44.5, 45.5, 80.0}; // provides 98 MeV Upsilon resolution
  // Thicknesses (in % X_0) of 1.3,1.3,2.7/2,2.7/2,2.0/2,2.0/2,2.0 - YA's most conservative case
  double support_thickness[7] = {0.0154, 0.0154, 0.0338/2.0, 0.0338/2.0, 0.0238/2.0, 0.0238/2.0, 0.0238};
  double length[7] = {20., 20., -1, -1., - 1., - 1., -1}; // -1 use eta coverage to determine length

  // here is our silicon:
  double inner_radius = radius;
  for (int ilayer = Min_si_layer; ilayer <= Max_si_layer; ilayer++)
    {
      cyl = new PHG4CylinderSubsystem("SVTX", ilayer);
      radius = svxrad[ilayer];
      // protect against installing layer with radius < inner radius from argument
      if (radius < inner_radius)
	{
	  cout << "current radius " << radius << " smaller than inner radius "
	       << inner_radius << endl;
	  gSystem->Exit(-1);
	}
      cyl->set_double_param("radius",radius);
      if (length[ilayer] > 0)
        {
          cyl->set_int_param("lengthviarapidity",0);
          cyl->set_double_param("length",length[ilayer]);
        }
      else
	{
          cyl->set_int_param("lengthviarapidity",1);
	}
      cyl->set_string_param("material","G4_Si");
      cyl->set_double_param("thickness",si_thickness[ilayer]);
      cyl->SetActive();
      cyl->SuperDetector("SVTX");
      g4Reco->registerSubsystem( cyl );

      radius += si_thickness[ilayer] + no_overlapp;
      cyl = new PHG4CylinderSubsystem("SVTXSUPPORT", ilayer);
      cyl->set_double_param("radius",radius);
      if (length[ilayer] > 0)
        {
          cyl->set_int_param("lengthviarapidity",0);
          cyl->set_double_param("length",length[ilayer]);
        }
      else
	{
          cyl->set_int_param("lengthviarapidity",1);
	}
      cyl->set_string_param("material","G4_Cu");
      cyl->set_double_param("thickness",support_thickness[ilayer]);
      if (absorberactive)  cyl->SetActive();
      cyl->SuperDetector("SVTXSUPPORT");
      g4Reco->registerSubsystem( cyl );
    }
  if (ilayer != (Max_si_layer+1)) // coming out of the loop, layer is layer+1
    {
      cout << "layer number mismatch for Max_si_layer, Max_si_layer "
           << Max_si_layer << " should be " << ilayer << endl;
      gSystem->Exit(-1);
    }
  radius += support_thickness[Max_si_layer] + no_overlapp;

  if (verbosity > 0) {
    cout << "============================ G4_Svtx.C::Svtx() ============================" << endl;
    cout << " SVTX Material Description:" << endl;
    for (int ilayer = Min_si_layer; ilayer <= Max_si_layer; ilayer++) {
      cout << "  layer " << ilayer
	   << "  radius " << svxrad[ilayer]
	   << "  zlength " << length[ilayer]
	   << "  thickness (Si) " << si_thickness[ilayer]
//.........这里部分代码省略.........

double Svtx(PHG4Reco* g4Reco, double radius, 
	    const int absorberactive = 0,
	    int verbosity = 0) {

  float svtx_inner_radius = 2.335; // based on the ALICE ITS (same beam pipe as ours)
  
  if (radius > svtx_inner_radius) {
    cout << "inconsistency: radius: " << radius 
	 << " larger than SVTX inner radius: " << svtx_inner_radius << endl;
    gSystem->Exit(-1);
  }
 
  PHG4CylinderSubsystem *cyl;

  // silicon layers ------------------------------------------------------------

  // inner pixels are a copy of the MAPS ITS inner layers
  // outer strips are from YA at the Santa Fe Tracking Workshop 10/27/2015
  // see: https://indico.bnl.gov/conferenceDisplay.py?confId=1364

  // The updated thicknesses from Yasuyuki are as follows:
  // For Si 1mm = 1.07% X_0
  // For Cu 1mm = 6.96% X_0
  // The thickness of the tracking layers is:
  // 0 MAPS: 0.3% X_0  (0.053% sensor + 0.247% support) sensor =  50 mc Si, support =  35 mc Cu
  // 1 MAPS: 0.3% X_0  (0.053% sensor + 0.247% support) sensor =  50 mc Si, support =  35 mc Cu
  // 2 MAPS: 0.3% X_0  (0.053% sensor + 0.247% support) sensor =  50 mc Si, support =  35 mc Cu
  
  double si_thickness[3] = {0.0050, 0.0050, 0.0050};
  double svxrad[3] = {svtx_inner_radius, 3.132, 3.904};
  double support_thickness[3] = {0.0035, 0.0035, 0.0035};
  double length[3] = {27., 27., 27.};

  for (int ilayer=0;ilayer<n_svx_layer;++ilayer) {
    cyl = new PHG4CylinderSubsystem("SVTX", ilayer);
    radius = svxrad[ilayer];
    cyl->SetRadius(radius);
    cyl->SetLength( length[ilayer] );
    cyl->SetMaterial("G4_Si");
    cyl->SetThickness( si_thickness[ilayer] );
    cyl->SetActive();
    cyl->SuperDetector("SVTX");
    g4Reco->registerSubsystem( cyl );
    
    radius += si_thickness[ilayer] + no_overlapp;
    
    cyl = new PHG4CylinderSubsystem("SVTXSUPPORT", ilayer);
    cyl->SetRadius(radius);
    cyl->SetLength( length[ilayer] );
    cyl->SetMaterial("G4_Cu");
    cyl->SetThickness( support_thickness[ilayer] );
    cyl->SuperDetector("SVTXSUPPORT");
    g4Reco->registerSubsystem( cyl );
  }

  // time projection chamber layers --------------------------------------------

  double inner_cage_radius = 30.;
  string tpcgas = "G4_Ar";

  radius = inner_cage_radius;
  
  double n_rad_length_cage = 1.0e-02;
  double cage_length = 400.;
  double cage_thickness = 1.43 * n_rad_length_cage;
  
  cyl = new PHG4CylinderSubsystem("SVTXSUPPORT", 3);
  cyl->SetRadius(radius);
  cyl->SetLength(cage_length);
  cyl->SetMaterial("G4_Cu");
  cyl->SetThickness( cage_thickness ); // Cu X_0 = 1.43 cm
  cyl->SuperDetector("SVTXSUPPORT");
  g4Reco->registerSubsystem( cyl );

  radius += cage_thickness;
  
  double outer_radius = 80.;
  int npoints = Max_si_layer - n_svx_layer;
  double delta_radius =  ( outer_radius - cage_thickness - radius )/( (double)npoints );
  
  for(int ilayer=n_svx_layer;ilayer<(2+npoints);++ilayer) {
    cyl = new PHG4CylinderSubsystem("SVTX", ilayer);
    cyl->SetRadius(radius);
    cyl->SetLength( cage_length );
    cyl->SetMaterial(tpcgas.c_str());
    cyl->SetThickness(  delta_radius - 0.01 );
    cyl->SetActive();
    cyl->SuperDetector("SVTX");
    g4Reco->registerSubsystem( cyl );
    
    radius += delta_radius;
  }

  cyl = new PHG4CylinderSubsystem("SVTXSUPPORT", 2+npoints);
  cyl->SetRadius(radius);
  cyl->SetLength(cage_length);
  cyl->SetMaterial("G4_Cu");
  cyl->SetThickness( cage_thickness ); // Cu X_0 = 1.43 cm
  cyl->SuperDetector("SVTXSUPPORT");
  g4Reco->registerSubsystem( cyl );
//.........这里部分代码省略.........

//! Jin Huang <[email protected]> : Fully tuned for ePHENIX LOI setup
void
G4Setup(const int absorberactive = 0, const float field = -1.)
{
  //---------------
  // Load libraries
  //---------------

  gSystem->Load("libg4detectors.so");
  gSystem->Load("libg4testbench.so");

  //---------------
  // Fun4All server
  //---------------

  Fun4AllServer *se = Fun4AllServer::instance();

  PHG4Reco* g4Reco = new PHG4Reco();
  g4Reco->set_rapidity_coverage(1.1); // temperary value assigned by ePHENIX LOI
  if (field < 0)
    {
      const char * map =
          "/direct/phenix+WWW/p/draft/jinhuang/sPHENIX/ePHENIX/BABAR_V11_GridOut_ePHENIX.SF7.root";

      cout << "G4Setup - Using ePHENIX LOI field map ";
      cout << map;
      cout << endl;

      g4Reco->set_field_map(map, 2);
    }
  else
    {
      g4Reco->set_field(field); // use const soleniodal field 
    }

  /////////////////////////////////////////////////
  //  Beam Pipe
  /////////////////////////////////////////////////
  PHG4CylinderSubsystem *beamcyl;
  beamcyl = new PHG4CylinderSubsystem("BEAMPIPE", 1);
  beamcyl->SetRadius(2.0);
  beamcyl->SetThickness(0.1);
  beamcyl->SetLengthViaRapidityCoverage(false);
  beamcyl->SetLength(g4Reco->GetWorldSizeZ() - 10.); //g4Reco->GetWorldSizeZ()); // go through our entire world in z directions
  beamcyl->SetMaterial("G4_Be");
  //   beamcyl->SetPosition(0, 0, 250);
  //  if (absorberactive) beamcyl->SetActive();
  beamcyl->OverlapCheck(overlapcheck);
  g4Reco->registerSubsystem(beamcyl);

  /////////////////////////////////////////////////
  // Central magnet and detectors
  /////////////////////////////////////////////////

  PHG4CylinderSubsystem *cyl;

  double magnet_inner_radius = 140;
  double magnet_outer_radius = 173;
  double magnet_thickness = magnet_outer_radius - magnet_inner_radius;
  double emc_inner_radius = 95.; // emc inner radius from engineering spreadsheet
  double hcal_in_inner_radius = magnet_outer_radius + 15.; // inner hcal inner radius from engineering spreadsheet
  double hcal_out_inner_radius = hcal_in_inner_radius + 30.; // inner hcal inner radius from engineering spreadsheet
  double preshower_inner_radius = 90.;
  double tpc_inner_radius = 15.;
  double tpc_outer_radius = 80.;
  double tpc_thickness = tpc_outer_radius - tpc_inner_radius;

  int ilayer = -1; // just to declare this varialbe outside of detector setups

  double radius = tpc_inner_radius;
  radius = Tpc(g4Reco, radius, tpc_thickness, absorberactive);
//
  radius = G4_DIRC(g4Reco);

  if (radius > emc_inner_radius - 4.)
    {
      cout << "inconsistency: " << radius << " larger than emc inner radius: "
          << emc_inner_radius - 4. << endl;
      gSystem->Exit(-1);
    }

  // inside CEmc now...
  //radius = emc_inner_radius - 4.;
  //cyl = new PHG4CylinderSubsystem("EMCELECTRONICS", 0);
  //cyl->SetRadius(radius);
  //cyl->SetMaterial("G4_TEFLON"); // plastic
  //cyl->SetThickness(0.5);
  //if (absorberactive)
  //  cyl->SetActive();
  //cyl->OverlapCheck(overlapcheck);
  //g4Reco->registerSubsystem(cyl);

  radius = emc_inner_radius;
  int ncross = 4;
  radius = CEmc(g4Reco, radius, ncross, absorberactive);
  double saveradius = radius + no_overlapp;

//   double al_radlen =  8.897;
//   radius = magnet_inner_radius + magnet_thickness/2. - al_radlen/2.;
  // magnet (1 radlen Al = 8.897cm - pdg)
//.........这里部分代码省略.........