setupBeamline.cxx

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#include "FPTracker/setupBeamline.h"
#include "FPTracker/STLHelpers.h"
#include "FPTracker/ConfigData.h"
#include "FPTracker/magnetSet.h"
#include "FPTracker/readConfigData.h"
#include "FPTracker/Magnet.h"
#include "FPTracker/EmptySpaceElement.h"
#include "FPTracker/CollimatorData.h"
#include "FPTracker/Collimator.h"
#include "FPTracker/collSet.h"
#include "FPTracker/Plane.h"
#include "FPTracker/Beamline.h"
#include "FPTracker/beamlineXPosition.h"
#include "FPTracker/IBeamElement.h"
#include "FPTracker/Particle.h"
#include <fstream>
#include <iostream>
 
namespace FPTracker{
 
  Beamline setupBeamline(
             const ConfigData& configData,
             const Side& side,
             int magver,
             std::shared_ptr< std::ifstream> magfile 
             )
  {
    
    Magnet::Container_t   magnets    = magnetSet(configData, side, magver, std::move(magfile));
    Plane::Ptr_t          endPlane( new Plane(configData.endMarker, side) );
    CollimatorData  collimatorData(configData);
    Collimator::Container_t collimators = collSet(collimatorData, side);
 
    IBeamElement::List_t elements;
    //elements.reserve( 2*(magnets.size()+collimators.size()+planes.size()) );
    elements.assign(magnets.begin(), magnets.end());
    elements.push_back(std::move(endPlane));
    elements.insert(elements.end(), collimators.begin(), collimators.end());
    elements.sort(absZGreater< IBeamElement::ConstPtr_t >);
 
 
    IBeamElement::ListIter_t current  = elements.begin();
    IBeamElement::ListIter_t last     = elements.end();
 
    elements.push_front
      (
       EmptySpaceElement::Ptr_t(
                     new EmptySpaceElement( 
                               0., 
                               (*current)->frontFace(),
                               beamlineXPosition(0.),
                               (*current)->side()
                               ) 
                     )
       );
    ++current;
 
    for(; current != last; ++current){
      IBeamElement::ListIter_t previous = current;
      --previous;
      elements.insert(current, 
              EmptySpaceElement::Ptr_t(
                            new  EmptySpaceElement(
                                       *previous, 
                                       *current
                                       )
                            )
              );
    }
      
    Beamline beamline(elements.begin(), elements.end());
 
    double pbeam = configData.pbeam0;
    std::shared_ptr<IParticle> ip = (side ==  beam1) ? 
      std::shared_ptr<IParticle>(new Particle(0., 0., 0., 0., 0.,     pbeam) ):
      std::shared_ptr<IParticle>(new Particle(0., 0., 0., 0., 0., -1.*pbeam) );
    beamline.calibrate( *ip );
 
 
    return beamline;
  }
}