createGearForILD.cpp

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//==========================================================================
//  AIDA Detector description implementation 
//--------------------------------------------------------------------------
// Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN)
// All rights reserved.
//
// For the licensing terms see $DD4hepINSTALL/LICENSE.
// For the list of contributors see $DD4hepINSTALL/doc/CREDITS.
//
// Author     : F.Gaede
//
//==========================================================================
#include "DD4hep/Detector.h"
#include "DD4hep/Factories.h"
#include "DD4hep/DD4hepUnits.h" 

#include "DDRec/DetectorData.h"
#include "DDRec/DDGear.h"
#include "DDRec/MaterialManager.h"

#include "DDRec/Vector3D.h"

#include "DDSegmentation/Segmentation.h"

#include "gearimpl/TPCParametersImpl.h"
#include "gearimpl/FixedPadSizeDiskLayout.h"
#include "gearimpl/ZPlanarParametersImpl.h"
#include "gearimpl/FTDParametersImpl.h"
#include "gearimpl/CalorimeterParametersImpl.h"

#include <iostream>

namespace dd4hep{
  namespace rec{
    
    using namespace detail ;

    static long createGearForILD(Detector& description, int /*argc*/, char** /*argv*/) {
      
      std::cout << " **** running plugin createGearForILD ! " <<  std::endl ;
      
      
      // ===========================================================================================
      // global parameters:
      
      double crossing_angle(0.) ;
      try{ crossing_angle = description.constant<double>("ILC_Main_Crossing_Angle") ; } catch(std::runtime_error&e) {std::cerr << " >>>> " << e.what() << std::endl ;} 
      
      
      //========= TPC ==============================================================================
      try{

    DetElement tpcDE = description.detector("TPC") ;
    
    FixedPadSizeTPCData* tpc = tpcDE.extension<FixedPadSizeTPCData>() ;
    
    gear::TPCParametersImpl* gearTPC = new gear::TPCParametersImpl( tpc->driftLength /dd4hep::mm , gear::PadRowLayout2D::POLAR ) ;
    
    gearTPC->setPadLayout( new gear::FixedPadSizeDiskLayout( tpc->rMinReadout/dd4hep::mm , tpc->rMaxReadout/dd4hep::mm, tpc->padHeight/dd4hep::mm,
                                 tpc->padWidth/dd4hep::mm , tpc->maxRow, tpc->padGap /dd4hep::mm  ) ) ;
    
    gearTPC->setDoubleVal("tpcInnerRadius", tpc->rMin/dd4hep::mm  )  ; // inner r of support tube
    gearTPC->setDoubleVal("tpcOuterRadius", tpc->rMax/dd4hep::mm  )  ; // outer radius of TPC
    gearTPC->setDoubleVal("tpcInnerWallThickness", tpc->innerWallThickness/dd4hep::mm  )  ;   // thickness of inner shell
    gearTPC->setDoubleVal("tpcOuterWallThickness", tpc->outerWallThickness/dd4hep::mm  )  ;   // thickness of outer shell
    
    tpcDE.addExtension< GearHandle >( new GearHandle( gearTPC, "TPCParameters" ) ) ;

      } catch( std::runtime_error& e ){  
    std::cerr << " >>>> " << e.what() << std::endl ;
      } 

      //========= VXD ==============================================================================
      
      try{
    DetElement vxdDE = description.detector("VXD") ;
    
    ZPlanarData* vxd = vxdDE.extension<ZPlanarData>() ;
    
    //      ZPlanarParametersImpl (int type, double shellInnerRadius, double shellOuterRadius, double shellHalfLength, double shellGap, double shellRadLength)
    int vxdType =  gear::ZPlanarParameters::CMOS ;
    gear::ZPlanarParametersImpl* gearVXD = new gear::ZPlanarParametersImpl( vxdType, vxd->rInnerShell/dd4hep::mm,  vxd->rOuterShell/dd4hep::mm,
                                        vxd->zHalfShell/dd4hep::mm , vxd->gapShell/dd4hep::mm , 0.  ) ;
    
    for(unsigned i=0,n=vxd->layers.size() ; i<n; ++i){
      
      const rec::ZPlanarData::LayerLayout& l = vxd->layers[i] ;
      
      // FIXME set rad lengths to 0 -> need to get from dd4hep ....
      gearVXD->addLayer( l.ladderNumber, l.phi0, 
                 l.distanceSupport/dd4hep::mm,   l.offsetSupport/dd4hep::mm,   l.thicknessSupport/dd4hep::mm,   l.zHalfSupport/dd4hep::mm,   l.widthSupport/dd4hep::mm,   0. , 
                 l.distanceSensitive/dd4hep::mm, l.offsetSensitive/dd4hep::mm, l.thicknessSensitive/dd4hep::mm, l.zHalfSensitive/dd4hep::mm, l.widthSensitive/dd4hep::mm, 0. )  ;
    
    }
    
    GearHandle* handle = new GearHandle( gearVXD, "VXDParameters" )  ;
    
    // quick hack for now: add the one material that is needed by KalDet :  
    //      handle->addMaterial( "VXDSupportMaterial", 2.075865162e+01, 1.039383117e+01, 2.765900000e+02, 1.014262421e+03, 3.341388059e+03)  ; 
    
    // -------- better: get right averaged material from first ladder:  ------------------
    MaterialManager matMgr( Detector::getInstance().world().volume() ) ;
      
    const rec::ZPlanarData::LayerLayout& l = vxd->layers[0] ;
    
    Vector3D a( l.distanceSupport                      , l.phi0 , 0. ,  Vector3D::cylindrical ) ;
    Vector3D b( l.distanceSupport + l.thicknessSupport , l.phi0 , 0. ,  Vector3D::cylindrical ) ;
    
    const MaterialVec& materials = matMgr.materialsBetween( a , b  ) ;
    
    MaterialData mat = ( materials.size() > 1  ? matMgr.createAveragedMaterial( materials ) : materials[0].first  ) ;
    
    // std::cout << " ####### found materials between points : " << a << " and " << b << " : " ;
    // for( unsigned i=0,n=materials.size();i<n;++i){
    //  std::cout <<  materials[i].first.name() << "[" <<   materials[i].second << "], " ;
    // }
    // std::cout << std::endl ;
    // std::cout << "   averaged material : " << mat << std::endl ;
    
    handle->addMaterial( "VXDSupportMaterial", mat.A(), mat.Z() , mat.density()/(dd4hep::kg/(dd4hep::g*dd4hep::m3)) , mat.radiationLength()/dd4hep::mm , mat.interactionLength()/dd4hep::mm )  ; 
    
    
    vxdDE.addExtension< GearHandle >( handle ) ;

      } catch( std::runtime_error& e ){  
    std::cerr << " >>>> " << e.what() << std::endl ;
      } 

      //========= SIT ==============================================================================
      
      try{ 

    DetElement sitDE = description.detector("SIT") ;
    
    ZPlanarData* sit = sitDE.extension<ZPlanarData>() ;
    
    //      ZPlanarParametersImpl (int type, double shellInnerRadius, double shellOuterRadius, double shellHalfLength, double shellGap, double shellRadLength)
    int sitType =  gear::ZPlanarParameters::CCD ;
    gear::ZPlanarParametersImpl* gearSIT = new gear::ZPlanarParametersImpl( sitType, sit->rInnerShell/dd4hep::mm,  sit->rOuterShell/dd4hep::mm,
                                        sit->zHalfShell/dd4hep::mm , sit->gapShell/dd4hep::mm , 0.  ) ;
    std::vector<int> n_sensors_per_ladder ;
    
    for(unsigned i=0,n=sit->layers.size() ; i<n; ++i){
      
      const rec::ZPlanarData::LayerLayout& l = sit->layers[i] ;
      
      // FIXME set rad lengths to 0 -> need to get from dd4hep ....
      gearSIT->addLayer( l.ladderNumber, l.phi0, 
                 l.distanceSupport/dd4hep::mm,   l.offsetSupport/dd4hep::mm,   l. thicknessSupport/dd4hep::mm,   l.zHalfSupport/dd4hep::mm,   l.widthSupport/dd4hep::mm,   0. , 
                 l.distanceSensitive/dd4hep::mm, l.offsetSensitive/dd4hep::mm, l. thicknessSensitive/dd4hep::mm, l.zHalfSensitive/dd4hep::mm, l.widthSensitive/dd4hep::mm, 0. )  ;
      
      
      n_sensors_per_ladder.push_back( l.sensorsPerLadder);
    }
    
    gearSIT->setDoubleVal("strip_width_mm"  , sit->widthStrip / dd4hep::mm ) ;
    gearSIT->setDoubleVal("strip_length_mm" , sit->lengthStrip/ dd4hep::mm ) ;
    gearSIT->setDoubleVal("strip_pitch_mm"  , sit->pitchStrip / dd4hep::mm ) ;
    gearSIT->setDoubleVal("strip_angle_deg" , sit->angleStrip / dd4hep::deg ) ;
    
    
    gearSIT->setIntVals("n_sensors_per_ladder",n_sensors_per_ladder);
    
    sitDE.addExtension< GearHandle >( new GearHandle( gearSIT, "SITParameters" ) ) ;

      } catch( std::runtime_error& e ){ 
    std::cerr << " >>>> " << e.what() << std::endl ;
      } 

      //============================================================================================

      try {

    DetElement setDE = description.detector("SET") ;
    
    ZPlanarData* set = setDE.extension<ZPlanarData>() ;
    
    //      ZPlanarParametersImpl (int type, double shellInnerRadius, double shellOuterRadius, double shellHalfLength, double shellGap, double shellRadLength)
    int setType =  gear::ZPlanarParameters::CCD ;
    gear::ZPlanarParametersImpl* gearSET = new gear::ZPlanarParametersImpl( setType, set->rInnerShell/dd4hep::mm,  set->rOuterShell/dd4hep::mm,
                                        set->zHalfShell/dd4hep::mm , set->gapShell/dd4hep::mm , 0.  ) ;
    std::vector<int> n_sensors_per_ladder ;
    //n_sensors_per_ladder.clear() ;
    
    for(unsigned i=0,n=set->layers.size() ; i<n; ++i){
      
      const rec::ZPlanarData::LayerLayout& l = set->layers[i] ;
      
      // FIXME set rad lengths to 0 -> need to get from dd4hep ....
      gearSET->addLayer( l.ladderNumber, l.phi0, 
                 l.distanceSupport/dd4hep::mm,   l.offsetSupport/dd4hep::mm,   l. thicknessSupport/dd4hep::mm,   l.zHalfSupport/dd4hep::mm,   l.widthSupport/dd4hep::mm,   0. , 
                 l.distanceSensitive/dd4hep::mm, l.offsetSensitive/dd4hep::mm, l. thicknessSensitive/dd4hep::mm, l.zHalfSensitive/dd4hep::mm, l.widthSensitive/dd4hep::mm, 0. )  ;
      
      
      n_sensors_per_ladder.push_back( l.sensorsPerLadder);
    }
    
    gearSET->setDoubleVal("strip_width_mm"  , set->widthStrip / dd4hep::mm ) ;
    gearSET->setDoubleVal("strip_length_mm" , set->lengthStrip/ dd4hep::mm ) ;
    gearSET->setDoubleVal("strip_pitch_mm"  , set->pitchStrip / dd4hep::mm ) ;
    gearSET->setDoubleVal("strip_angle_deg" , set->angleStrip / dd4hep::deg ) ;

    
    gearSET->setIntVals("n_sensors_per_ladder",n_sensors_per_ladder);
    
    setDE.addExtension< GearHandle >( new GearHandle( gearSET, "SETParameters" ) ) ;

      } catch( std::runtime_error& e ){  
    std::cerr << " >>>> " << e.what() << std::endl ;
      } 
      
      //============================================================================================

      try {

    DetElement ftdDE = description.detector("FTD") ;
    
    ZDiskPetalsData* ftd = ftdDE.extension<ZDiskPetalsData>() ;
    
    gear::FTDParametersImpl* gearFTD = new gear::FTDParametersImpl();
    
    for(unsigned i=0,n=ftd->layers.size() ; i<n; ++i){
      
      const rec::ZDiskPetalsData::LayerLayout& l = ftd->layers[i] ;
      
      
      bool isDoubleSided  = l.typeFlags[ rec::ZDiskPetalsStruct::SensorType::DoubleSided ] ;
      
      // avoid 'undefined reference' at link time ( if built w/o optimization ):
      static const int PIXEL = gear::FTDParameters::PIXEL ;
      static const int STRIP = gear::FTDParameters::STRIP ;
      int  sensorType   = ( l.typeFlags[ rec::ZDiskPetalsStruct::SensorType::Pixel ] ? PIXEL : STRIP ) ;
      //                  gear::FTDParameters::PIXEL :  gear::FTDParameters::STRIP ) ;
      
      double zoffset = fabs( l.zOffsetSupport ) ;
      double signoffset =  l.zOffsetSupport > 0  ?  1. : -1 ;
      
      gearFTD->addLayer( l.petalNumber, l.sensorsPerPetal, 
                 isDoubleSided, sensorType, 
                 l.petalHalfAngle, l.phi0, l.alphaPetal, 
                 l.zPosition/dd4hep::mm, zoffset/dd4hep::mm, signoffset,
                 l.distanceSupport/dd4hep::mm, l.thicknessSupport/dd4hep::mm,
                 l.widthInnerSupport/dd4hep::mm, l.widthOuterSupport/dd4hep::mm,
                 l.lengthSupport/dd4hep::mm, 
                 0.,
                 l.distanceSensitive/dd4hep::mm, l.thicknessSensitive/dd4hep::mm,
                 l.widthInnerSensitive/dd4hep::mm, l.widthOuterSensitive/dd4hep::mm,
                 l.lengthSensitive/dd4hep::mm, 
                 0. ) ;
      
      
      // FIXME set rad lengths to 0 -> need to get from dd4hep ....
    }
    
    gearFTD->setDoubleVal("strip_width_mm"  , ftd->widthStrip / dd4hep::mm ) ;
    gearFTD->setDoubleVal("strip_length_mm" , ftd->lengthStrip/ dd4hep::mm ) ;
    gearFTD->setDoubleVal("strip_pitch_mm"  , ftd->pitchStrip / dd4hep::mm ) ;
    gearFTD->setDoubleVal("strip_angle_deg" , ftd->angleStrip / dd4hep::deg ) ;
    
    
    ftdDE.addExtension< GearHandle >( new GearHandle( gearFTD, "FTDParameters" ) ) ;

      } catch( std::runtime_error& e ){  
    std::cerr << " >>>> " << e.what() << std::endl ;
      } 

      //============================================================================================

      try {
    
    DetElement coilDE = description.detector("Coil") ;
    
    gear::GearParametersImpl* gearCOIL = new gear::GearParametersImpl();
    
    Tube coilTube = Tube( coilDE.volume().solid() )  ;
    
    gearCOIL->setDoubleVal("Coil_cryostat_inner_radius" , coilTube->GetRmin()/ dd4hep::mm ) ;
    gearCOIL->setDoubleVal("Coil_cryostat_outer_radius" , coilTube->GetRmax()/ dd4hep::mm ) ;
    gearCOIL->setDoubleVal("Coil_cryostat_half_z"       , coilTube->GetDZ()/ dd4hep::mm ) ;
    
    coilDE.addExtension< GearHandle >( new GearHandle( gearCOIL, "CoilParameters" ) ) ;
      
      } catch( std::runtime_error& e ){  
    std::cerr << " >>>> " << e.what() << std::endl ;
      } 

      //============================================================================================

      try {

    DetElement tubeDE = description.detector("Tube") ;
    
    ConicalSupportData* tube = tubeDE.extension<ConicalSupportData>() ;
    
    gear::GearParametersImpl* gearTUBE = new gear::GearParametersImpl();
    
    tube->isSymmetricInZ = true ;
    
    unsigned n = tube->sections.size() ;
    
    std::vector<double> rInner(n) ;
    std::vector<double> rOuter(n) ;
    std::vector<double> zStart(n) ;
    
    for(unsigned i=0 ; i<n ; ++i){
      
      const ConicalSupportData::Section& s = tube->sections[i] ;
      
      rInner[i] = s.rInner/ dd4hep::mm  ; 
      rOuter[i] = s.rOuter/ dd4hep::mm  ; 
      zStart[i] = s.zPos  / dd4hep::mm  ; 
      
      // FIXME set rad lengths to 0 -> need to get from dd4hep ....
    }
    
    gearTUBE->setDoubleVals("RInner" , rInner ) ;
    gearTUBE->setDoubleVals("ROuter" , rOuter ) ;
    gearTUBE->setDoubleVals("Z"      , zStart ) ;
    
    
    tubeDE.addExtension< GearHandle >( new GearHandle( gearTUBE, "BeamPipe" ) ) ;
      
      } catch( std::runtime_error& e ){  
    std::cerr << " >>>> " << e.what() << std::endl ;
      } 

      //========= CALO ==============================================================================

      //**********************************************************
      //*  gear interface w/ LayeredCalorimeterData extension
      //**********************************************************

      std::map< std::string, std::string > caloMap ;
      caloMap["HcalBarrel"] = "HcalBarrelParameters"  ; 
      caloMap["EcalBarrel"] = "EcalBarrelParameters" ;
      caloMap["EcalEndcap"] = "EcalEndcapParameters" ;
      caloMap["EcalPlug"]   = "EcalPlugParameters" ;
      caloMap["YokeBarrel"] = "YokeBarrelParameters" ;
      caloMap["YokeEndcap"] = "YokeEndcapParameters" ;
      caloMap["YokePlug"]   = "YokePlugParameters" ;
      caloMap["HcalBarrel"] = "HcalBarrelParameters" ;
      caloMap["HcalEndcap"] = "HcalEndcapParameters" ;
      caloMap["HcalRing"]   = "HcalRingParameters" ;
      caloMap["Lcal"]       = "LcalParameters" ;
      caloMap["LHcal"]      = "LHcalParameters" ;
      caloMap["BeamCal"]    = "BeamCalParameters" ;
      
      for(  std::map< std::string, std::string >::const_iterator it = caloMap.begin() ; it != caloMap.end() ; ++it ){

      

    try {

      DetElement caloDE = description.detector( it->first ) ;
    
      LayeredCalorimeterData* calo = caloDE.extension<LayeredCalorimeterData>() ;
      
      gear::CalorimeterParametersImpl* gearCalo = 
        ( calo->layoutType == LayeredCalorimeterData::BarrelLayout  ?
          new gear::CalorimeterParametersImpl(  calo->extent[0]/dd4hep::mm, calo->extent[3]/dd4hep::mm, calo->inner_symmetry, calo->phi0 )  :
          //CalorimeterParametersImpl (double rMin, double zMax, int symOrder=8, double phi0=0.0) - C'tor for a cylindrical (octagonal) BARREL calorimeter.
          new gear::CalorimeterParametersImpl(  calo->extent[0]/dd4hep::mm,  calo->extent[1]/dd4hep::mm,  calo->extent[2]/dd4hep::mm, calo->outer_symmetry, calo->phi0 )   ) ;
      //CalorimeterParametersImpl (double rMin, double rMax, double zMin, int symOrder=2, double phi0=0.0) - C'tor for a cylindrical (octagonal) ENDCAP calorimeter. 
      
      for( unsigned i=0, nL = calo->layers.size() ; i <nL ; ++i ){
        
        LayeredCalorimeterData::Layer& l = calo->layers[i] ;
        
            //Do some arithmetic to get thicknesses and (approximate) absorber thickneses from "new" rec structures
            //The positioning should come out right, but the absorber thickness should be overestimated due to the presence of 
            //other less dense material
        if( i == 0 ) {
          gearCalo->layerLayout().positionLayer( l.distance/dd4hep::mm, 
                             (l.inner_thickness+l.sensitive_thickness/2.)/dd4hep::mm , 
                             l.cellSize0/dd4hep::mm, l.cellSize1/dd4hep::mm, 
                             (l.inner_thickness-l.sensitive_thickness/2.)/dd4hep::mm ) ;
        }else{
          gearCalo->layerLayout().addLayer( (l.inner_thickness+l.sensitive_thickness/2.+calo->layers[i-1].outer_thickness-calo->layers[i-1].sensitive_thickness/2. ) / dd4hep::mm , 
                        l.cellSize0/dd4hep::mm, l.cellSize1/dd4hep::mm, (l.inner_thickness-l.sensitive_thickness/2.+calo->layers[i-1].outer_thickness-calo->layers[i-1].sensitive_thickness/2.)/dd4hep::mm) ;
        }
        // if( i == 0 ) {
        //   gearCalo->layerLayout().positionLayer( l.distance/dd4hep::mm, l.thickness/dd4hep::mm , 
        //                       l.cellSize0/dd4hep::mm, l.cellSize1/dd4hep::mm, l.absorberThickness/dd4hep::mm ) ;
        // }else{
        //   gearCalo->layerLayout().addLayer(                             l.thickness/dd4hep::mm , 
        //                                  l.cellSize0/dd4hep::mm, l.cellSize1/dd4hep::mm, l.absorberThickness/dd4hep::mm ) ;
        // }
        
      }
    
      if( it->first == "HcalBarrel" ){
        // additional parameters needed by MarlinPandora
        gearCalo->setIntVal("Hcal_outer_polygon_order"   ,  calo->outer_symmetry  ) ;
        gearCalo->setDoubleVal("Hcal_outer_polygon_phi0" ,  calo->phi0 ) ;
      }
          
      if( it->first == "BeamCal" ){

        try{
          // additional parameters needed by BCalReco
          
          SensitiveDetector sD = description.sensitiveDetector( it->first   )   ;
          Readout readOut = sD.readout() ;
          Segmentation seg = readOut.segmentation() ;
          
          //        DDSegmentation::DoubleVecParameter rPar =  dynamic_cast<DDSegmentation::DoubleVecParameter>( seg.parameter("grid_r_values"));
          DDSegmentation::DoubleVecParameter pPar =  dynamic_cast<DDSegmentation::DoubleVecParameter>( seg.parameter("grid_phi_values"));
          DDSegmentation::DoubleParameter    oPPar=  dynamic_cast<DDSegmentation::DoubleParameter>(    seg.parameter("offset_phi"));
          

          //offset_phi="-180*degree+(360*degree-BCal_SpanningPhi)*0.5"
          double offsetPhi   = oPPar->typedValue() ;
          double spanningPhi = 360.*dd4hep::deg - 2.*( offsetPhi + 180.*dd4hep::deg ) ;  

          gearCalo->setDoubleVals( "phi_segmentation"     , pPar->typedValue()  );
          gearCalo->setDoubleVal(  "cylinder_starting_phi", offsetPhi  );
          gearCalo->setDoubleVal(  "cylinder_spanning_phi", spanningPhi );
          gearCalo->setDoubleVal(  "beam_crossing_angle"  , crossing_angle );

          //fixme: don't know how to get these parameters at this stage ...
          //       probably need a named parameter object at every DetElement  ....
          gearCalo->setDoubleVal(  "dead_area_outer_r"       ,   0 );
          gearCalo->setDoubleVal(  "pairsMonitorZ"           ,   0. );
          gearCalo->setDoubleVal(  "FIXME_dead_area_outer_r" ,  -1. );
          gearCalo->setDoubleVal(  "FIXME_pairsMonitorZ"     ,  -1. );
        
        } catch( std::runtime_error& e ){  
          std::cerr << " >>>> BeamCal: " << e.what() << std::endl ;
        }
      }

      if( it->first == "Lcal" ||  it->first == "LHcal" ){
        gearCalo->setDoubleVal(  "beam_crossing_angle"  , crossing_angle );
      }

      caloDE.addExtension< GearHandle >( new GearHandle( gearCalo, it->second ) ) ;
      
    } catch( std::runtime_error& e ){  
      std::cerr << " >>>> " << e.what() << std::endl ;
    } 

      } // calo loop 



      //**********************************************************
      //*  test gear interface w/ LayeredExtensionImpl extension
      //**********************************************************
      
      // DetElement calo2DE = description.detector("EcalBarrel") ;
      
      // Calorimeter calo2( calo2DE ) ;
      
      // gear::CalorimeterParametersImpl* gearCalo2 = 
      //    ( calo2.isBarrel()  ?
      //      new gear::CalorimeterParametersImpl(  calo2.getRMin()/dd4hep::mm,                             calo2.getZMax()/dd4hep::mm, calo2.getNSides(),  0. )  :    // fixme: phi 0  is not defined ??
      //      new gear::CalorimeterParametersImpl(  calo2.getRMin()/dd4hep::mm, calo2.getRMax()/dd4hep::mm, calo2.getZMin()/dd4hep::mm, calo2.getNSides(),  0. ) 
      //      ) ;

      // for( unsigned i=0, nL = calo2.numberOfLayers() ; i <nL ; ++i ){
        
      //    if( i == 0 ) {
      //      gearCalo2->layerLayout().positionLayer( calo2.getRMin()/dd4hep::mm, calo2.thickness(i)/dd4hep::mm ,  0. /dd4hep::mm,   0. /dd4hep::mm, calo2.absorberThickness(i)/dd4hep::mm ) ;

      //    }else{                                                                                        //     fixme:   cell sizes  not in API !? 

      //      gearCalo2->layerLayout().addLayer(                                  calo2.thickness(i)/dd4hep::mm ,  0. /dd4hep::mm,   0. /dd4hep::mm, calo2.absorberThickness(i)/dd4hep::mm ) ;
      //    }


      // }

      // calo2DE.addExtension< GearHandle >( new GearHandle( gearCalo2, "EcalBarrelParameters" ) ) ;


      //============================================================================================



      // --- Detector::apply() expects return code 1 if all went well ! ----
      return 1;
    }
  }
}
DECLARE_APPLY( GearForILD, dd4hep::rec::createGearForILD )