epic/src/B0Window_geo.cpp

0001 // SPDX-License-Identifier: LGPL-3.0-or-later
0002 // Copyright (C) 2022 Dhevan Gangadharan
0003
0004 #include "DD4hep/DetFactoryHelper.h"
0005 #include "DD4hep/Printout.h"
0006 #include "DD4hep/Shapes.h"
0007 #include "DDRec/DetectorData.h"
0008 #include "DDRec/Surface.h"
0009 #include "XML/Layering.h"
0010 #include <XML/Helper.h>
0011
0012 using namespace std;
0013 using namespace dd4hep;
0014
0015 static Ref_t create_detector(Detector& description, xml_h e, SensitiveDetector /*sens*/) {
0016
0017   xml_det_t x_det  = e;
0018   xml_comp_t x_dim = x_det.dimensions();
0019   xml_comp_t x_pos = x_det.position();
0020   xml_comp_t x_rot = x_det.rotation();
0021   //
0022   string det_name = x_det.nameStr();
0023   string mat_name = dd4hep::getAttrOrDefault<string>(x_det, _U(material), "StainlessSteel");
0024   //
0025   double sizeR     = x_dim.r();
0026   double sizeZ     = x_dim.z();
0027   double sizeR_el  = x_dim.x();
0028   double sizeR_had = x_dim.y();
0029   double posX      = x_pos.x();
0030   double posY      = x_pos.y();
0031   double posZ      = x_pos.z();
0032   double rotX      = x_rot.x();
0033   double rotY      = x_rot.y();
0034   double rotZ      = x_rot.z();
0035
0036   Tube tube(0.0, sizeR, sizeZ);
0037   Tube tube_el(0.0, sizeR_el, sizeZ);
0038   Tube tube_had(0.0, sizeR_had, sizeZ);
0039   SubtractionSolid exit_window(tube, tube_had, Position(0.0, 0.0, 0.0));
0040   exit_window = SubtractionSolid(exit_window, tube_el, Position(-posX, 0.0, 0.0));
0041
0042   Volume vol(det_name + "_vol_ExitWindow", exit_window, description.material(mat_name));
0043   vol.setVisAttributes(description.visAttributes(x_det.visStr()));
0044
0045   Transform3D pos(RotationZYX(rotX, rotY, rotZ), Position(posX, posY, posZ));
0046
0047   DetElement det(det_name, x_det.id());
0048   Volume motherVol = description.pickMotherVolume(det);
0049   PlacedVolume phv = motherVol.placeVolume(vol, pos);
0050
0051   det.setPlacement(phv);
0052
0053   return det;
0054 }
0055
0056 DECLARE_DETELEMENT(B0Window, create_detector)