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ref_RectangularTracker_geo.cpp 3.39 KiB
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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     : M.Frank
    // Modified   : W.Armstrong
    //
    //==========================================================================
    //
    // Specialized generic detector constructor
    // 
    //==========================================================================
    #include "DD4hep/DetFactoryHelper.h"
    
    using namespace std;
    using namespace dd4hep;
    using namespace dd4hep::detail;
    
    static Ref_t create_detector(Detector& description, xml_h e, SensitiveDetector sens)  {
      xml_det_t  x_det     = e;
      Material   air       = description.air();
      string     det_name  = x_det.nameStr();
      bool       reflect   = x_det.reflect();
      DetElement sdet(det_name,x_det.id());
      Assembly   assembly(det_name);
      PlacedVolume pv;
      int l_num = 0;
      xml::Component  pos  = x_det.position();
    
      for(xml_coll_t i(x_det,_U(layer)); i; ++i, ++l_num)  {
        xml_comp_t x_layer    = i;
        string     l_nam      = det_name + _toString(l_num, "_layer%d");
        double     x_lay      = x_layer.x();
        double     y_lay      = x_layer.y();
        double     z          = 0;
        double     zmin       = 0;
        double     layerWidth = 0.;
        int        s_num      = 0;
        for(xml_coll_t j(x_layer,_U(slice)); j; ++j)  {
          double thickness = xml_comp_t(j).thickness();
          layerWidth += thickness;
        }
        Box    l_box(x_lay/2.0, y_lay/2.0, layerWidth/2.0 );
        Volume l_vol(l_nam, l_box, air);
        l_vol.setVisAttributes(description, x_layer.visStr());
        for (xml_coll_t j(x_layer, _U(slice)); j; ++j, ++s_num) {
          xml_comp_t x_slice = j;
          double     thick   = x_slice.thickness();
          Material   mat     = description.material(x_slice.materialStr());
          string     s_nam   = l_nam + _toString(s_num, "_slice%d");
          Volume     s_vol(s_nam, Box(x_lay/2.0, y_lay/2.0, thick/2.0), mat);
          if (x_slice.isSensitive()) {
            sens.setType("tracker");
            s_vol.setSensitiveDetector(sens);
          }
          s_vol.setAttributes(description, x_slice.regionStr(), x_slice.limitsStr(), x_slice.visStr());
          pv = l_vol.placeVolume(s_vol, Position(0, 0, z - zmin - layerWidth / 2 + thick / 2));
          pv.addPhysVolID("slice", s_num);
        }
    
        DetElement layer(sdet,l_nam+"_pos",l_num);
        pv = assembly.placeVolume(l_vol,Position(0,0,zmin+layerWidth/2.));
        pv.addPhysVolID("layer",l_num);
        pv.addPhysVolID("barrel",1);
        layer.setPlacement(pv);
        if ( reflect )  {
          pv = assembly.placeVolume(l_vol,Transform3D(RotationY(M_PI),Position(0,0,-zmin-layerWidth/2)));
          pv.addPhysVolID("layer",l_num);
          pv.addPhysVolID("barrel",2);
          DetElement layerR = layer.clone(l_nam+"_neg");
          sdet.add(layerR.setPlacement(pv));
        }
      }
      if ( x_det.hasAttr(_U(combineHits)) ) {
        sdet.setCombineHits(x_det.attr<bool>(_U(combineHits)),sens);
      }
      pv = description.pickMotherVolume(sdet).placeVolume(assembly,Position(pos.x(),pos.y(),pos.z()));
      pv.addPhysVolID("system", x_det.id());      // Set the subdetector system ID.
      sdet.setPlacement(pv);
      return sdet;
    }
    
    DECLARE_DETELEMENT(ref_RectangularTracker,create_detector)