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//==========================================================================
// Zero Degree Calorimeter Detector implementation
//--------------------------------------------------------------------------
// Build two towers of ZDC - small and large
// Sampling type calorimeter
// J.KIM
// Created 2020-07-21
// Modified 2020-07-22
//==========================================================================
#include "DD4hep/DetFactoryHelper.h"
#include "DD4hep/Printout.h"
#include <XML/Helper.h>
#include "TMath.h"
#include "DDRec/Surface.h"
#include "DDRec/DetectorData.h"
#include "XML/Layering.h"
#include "Math/Transform3D.h"
using namespace std;
using namespace dd4hep;
using namespace dd4hep::rec;
using namespace dd4hep::detail;
/** \addtogroup calorimeters Calorimeters
*/
/** \addtogroup ZeroDegreeCalorimeter Zero-degree calorimeter
* \brief Type: **ZeroDegreeCAL**.
* \author J. Kim
* \ingroup calorimeters
*
*
* \code
* <detector id="2" name="largeZDC" type="ZDC" readout="ZDCHits" vis="RedVis">
*
* \endcode
*
* @{
*/
static Ref_t createDetector(Detector& lcdd, xml_h e, SensitiveDetector sens) {
xml_det_t x_det = e;
int det_id = x_det.id();
string det_name = x_det.nameStr();
xml_dim_t pos = x_det.position();
double x_pos = dd4hep::getAttrOrDefault(pos, _Unicode(x),0.0);
double y_pos = dd4hep::getAttrOrDefault(pos, _Unicode(y),0.0);
double z_pos = dd4hep::getAttrOrDefault(pos, _Unicode(z),0.0);
xml_dim_t dim = x_det.dimensions();
double pixel_x = dim.x();
double pixel_y = dim.y();
Material air = lcdd.material("Air");
double z = z_pos;
double zmin = z_pos;
DetElement det(det_name, det_id);
int layer_num = 1;
int slice_num = 1;
double totWidth = Layering(x_det).totalThickness();
Box envelope (pixel_x/2.0, pixel_y/2.0,totWidth);
Volume envelopeVol(det_name+"_envelope",envelope,air);
PlacedVolume pv;
xml_comp_t x_layer = x_det.child(_U(layer));
// Read layers
for(xml_coll_t c(x_det,_U(layer)); c; ++c)
{
xml_comp_t x_layer = c;
int repeat = x_layer.repeat();
double layerWidth = 0;
for(xml_coll_t l(x_layer,_U(slice)); l; ++l)
layerWidth += xml_comp_t(l).thickness();
// Loop over repeat#
for(int i=0; i< repeat; i++)
{
double zlayer = z;
string layer_name = det_name + _toString(layer_num,"_layer%d");
Volume layer_vol(layer_name,Box(pixel_x/2.0, pixel_y/2.0,layerWidth/2.0),air);
// Loop over slices
for(xml_coll_t l(x_layer,_U(slice)); l; ++l)
{
xml_comp_t x_slice = l;
double w = x_slice.thickness();
string slice_name = layer_name + _toString(slice_num,"slice%d");
Material slice_mat = lcdd.material(x_slice.materialStr());
Volume slice_vol (slice_name,Box(pixel_x/2.0, pixel_y/2.0,w/2.0),slice_mat);
if(x_slice.isSensitive())
{
sens.setType("calorimeter");
slice_vol.setSensitiveDetector(sens);
}
slice_vol.setAttributes(lcdd,x_slice.regionStr(), x_slice.limitsStr(), x_slice.visStr());
pv = layer_vol.placeVolume(slice_vol, Transform3D(RotationZYX(0.0,0.0,0.0),Position(0.0,0.0,z-zlayer-layerWidth/2.0+w/2.0)));
pv.addPhysVolID("slice", slice_num);
z += w;
++slice_num;
}
string layer_vis = dd4hep::getAttrOrDefault(x_layer, _Unicode(vis), "InvisibleWithDaughters");
layer_vol.setAttributes(lcdd, x_layer.regionStr(), x_layer.limitsStr(), layer_vis);
pv = envelopeVol.placeVolume(layer_vol, Transform3D(RotationZYX(0.0,0.0,0.0), Position(0,0,zlayer-zmin-totWidth/2.0+layerWidth/2.0)));
pv.addPhysVolID("layer", layer_num);
++layer_num;
}
}
envelopeVol.setAttributes(lcdd,x_det.regionStr(), x_det.limitsStr(), "InvisibleWithDaughters");
Volume motherVol = lcdd.pickMotherVolume(det);
PlacedVolume phv = motherVol.placeVolume(envelopeVol, Position(x_pos,y_pos,z_pos+totWidth/2.0));
phv.addPhysVolID("system", det.id());
det.setPlacement(phv);
return det;
}
DECLARE_DETELEMENT(topsideZDC, createDetector)