EndcapPresamplerConstruction.cxx

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#include "LArGeoEndcap/EndcapPresamplerConstruction.h"
#include "GeoModelKernel/GeoElement.h"  
#include "GeoModelKernel/GeoMaterial.h"  
#include "GeoModelKernel/GeoFullPhysVol.h"  
#include "GeoModelKernel/GeoPhysVol.h"  
#include "GeoModelKernel/GeoVPhysVol.h"  
#include "GeoModelKernel/GeoLogVol.h"  
#include "GeoModelKernel/GeoTubs.h"  
#include "GeoModelKernel/GeoNameTag.h"  
#include "GeoModelKernel/GeoIdentifierTag.h"  
#include "GeoModelKernel/GeoDefinitions.h"
#include "GeoModelInterfaces/StoredMaterialManager.h"
#include "GeoModelKernel/GeoShapeUnion.h"
#include "GeoModelKernel/GeoShapeShift.h"
 
#include "StoreGate/StoreGateSvc.h"
#include "GaudiKernel/MsgStream.h"
#include "GaudiKernel/Bootstrap.h"
#include "GaudiKernel/SystemOfUnits.h"
 
// For the database:
 
#include "RDBAccessSvc/IRDBAccessSvc.h"
#include "RDBAccessSvc/IRDBRecord.h"
#include "RDBAccessSvc/IRDBRecordset.h"
 
#include "GeoModelInterfaces/IGeoModelSvc.h"
 
#include <string>
#include <cmath>
 
 
// EndcapPresamplerConstruction
// Insert the LAr Endcap Presampler into a pre-defined mother volume 
// i.e. into the front cold wall of endcap cryostat (cyl.#14)
// 14-Jan-2002 Mikhail Leltchouk
 
 
 
EndcapPresamplerConstruction::EndcapPresamplerConstruction( bool imb ):
  m_psPhysical(nullptr)
{
  m_isModule = imb;
}
 
EndcapPresamplerConstruction::~EndcapPresamplerConstruction() {;}
 
 
GeoIntrusivePtr<GeoFullPhysVol> EndcapPresamplerConstruction::Envelope()
{
  if (m_psPhysical) return m_psPhysical->clone();
 
 
  ISvcLocator *svcLocator = Gaudi::svcLocator();
  SmartIF<StoreGateSvc> detStore{svcLocator->service("DetectorStore")};
  if (!detStore.isValid()) {
    throw std::runtime_error("Error in EndcapCryostatConstruction, cannot access DetectorStore");
  }
 
  StoredMaterialManager* materialManager = nullptr;
  if (StatusCode::SUCCESS != detStore->retrieve(materialManager, std::string("MATERIALS"))) return nullptr;
 
  const GeoMaterial *LAr  = materialManager->getMaterial("std::LiquidArgon");
  if (!LAr) {
    throw std::runtime_error("Error in EndcapCryostatConstruction, std::LiquidArgon is not found.");
  }
 
 
 //===>
  SmartIF<IRDBAccessSvc> pAccessSvc{svcLocator->service("RDBAccessSvc")};
  if (!pAccessSvc.isValid()) {
    throw std::runtime_error ("Cannot locate RDBAccessSvc!!");
  }
 
  SmartIF<IGeoModelSvc> geoModel{svcLocator->service("GeoModelSvc")};
  if (!geoModel.isValid()) {
    throw std::runtime_error ("Cannot locate GeoModelSvc!!");
  }
  
  std::string AtlasVersion = geoModel->atlasVersion();
  std::string LArVersion = geoModel->LAr_VersionOverride();
 
  std::string detectorKey  = LArVersion.empty() ? AtlasVersion : LArVersion;
  std::string detectorNode = LArVersion.empty() ? "ATLAS" : "LAr";
 
 
 
  IRDBRecordset_ptr presamplerPosition = pAccessSvc->getRecordsetPtr("PresamplerPosition",AtlasVersion, "ATLAS");
  
    //===>
 
 
  // LAr Endcap Presampler GEOMETRY
  double Rmin = 1231.74*Gaudi::Units::mm;
  double Rmax = 1701.98*Gaudi::Units::mm;
  double HalfZ = ((*presamplerPosition)[0]->getDouble("TCK")/2.)*Gaudi::Units::cm;  
 
 
  std::string name = "LAr::Endcap::Presampler::LiquidArgon";
 
  double phi_size = 360.*Gaudi::Units::deg;
  double start_phi = 0.;
  
  if( m_isModule ){
    phi_size = M_PI / 4;
    start_phi = M_PI / 2 - M_PI / 8;
  }
  
  GeoTubs* endcapPresamplerSolid  = new GeoTubs(Rmin, Rmax, HalfZ, start_phi, phi_size);
 
  const GeoLogVol* endcapPresamplerLog = new GeoLogVol(name,endcapPresamplerSolid, LAr);
  m_psPhysical = new GeoFullPhysVol(endcapPresamplerLog);
 
  return m_psPhysical;
}
 
/*  G3 code for comparison: cryogeo.age
 
 Fill  CREE                  ! e. cold wall front flange
       Section   = 14        ! endcap element number
       Material  = 2         ! material type
       Rmin      = 22.1      ! minimal radius            23.2 > 22.1
       Dr        = 194.4     ! radial thickness 193.8 > 195.4 > 194.4cold
       Zmin      = 356.1     ! location in z (minimum)  357.0 > 356.1
       Dz        = 6.5       ! lenght in z                5.0 >   6.5
 
 FILL  PSAM    ! CEPS parameters - ABSOLUTE nominal positions
       zpos = 362.4    ! nominal positions
       Tck  = 0.4      ! thinkness
       rmin = 123.174  ! minimal radius
       rmax = 170.198  ! maximum radius
* ---------------------------------------------------------------------
Block     CEPS  is the EC presampler
     Material   Liquid_Argon
     Medium     sensitive    isvol=1
     Attribute  CEPS         seen=1 colo=3
     Shape      TUBE         Rmin=psam_rmin  Rmax=psam_rmax  dz=psam_Tck/2
 
* eta limits are calculated based on geometry, taken into account Zshift:
 
     eta1=asinh((psam_zpos+CRYM_Zshift)/psam_rmax)
     eta2=asinh((psam_zpos+CRYM_Zshift)/psam_rmin)
     nbin=nint((eta2-eta1)/chit_Detaps)
     deta=(eta2-eta1)/nbin
     HITS CEPS  comp=1:1:   eta:deta:(eta1,eta2),
                            phi:chit_Dphi:(0,2*M_PI),
                            Eloss:0:(0,chit_Emax)
endblock
* ---------------------------------------------------------------------
*/