static DD4hep::Geometry::Ref_t createCaloDiscs(DD4hep::Geometry::LCDD& aLcdd,
DD4hep::XML::Handle_t aXmlElement,
DD4hep::Geometry::SensitiveDetector aSensDet) {
ServiceHandle<IMessageSvc> msgSvc("MessageSvc", "CalDiscsConstruction");
MsgStream lLog(&(*msgSvc), "CalDiscsConstruction");
DD4hep::XML::DetElement xmlDetElem = aXmlElement;
std::string nameDet = xmlDetElem.nameStr();
int idDet = xmlDetElem.id();
DD4hep::XML::Dimension dim(xmlDetElem.dimensions());
DD4hep::Geometry::DetElement caloDetElem(nameDet, idDet);
// Create air envelope for the whole endcap
DD4hep::Geometry::Cone envelopePositive(dim.dz(), dim.rmin1(), dim.rmax(), dim.rmin2(), dim.rmax());
DD4hep::Geometry::Cone envelopeNegative(dim.dz(), dim.rmin2(), dim.rmax(), dim.rmin1(), dim.rmax());
DD4hep::Geometry::UnionSolid envelopeShape(envelopePositive, envelopeNegative,
DD4hep::Geometry::Position(0, 0, -2 * dim.z_offset()));
DD4hep::Geometry::Volume envelopeVol(nameDet + "_vol", envelopeShape, aLcdd.material("Air"));
DD4hep::Geometry::Volume envelopePositiveVol(nameDet + "_positive_vol", envelopePositive, aLcdd.material("Air"));
DD4hep::Geometry::Volume envelopeNegativeVol(nameDet + "_negative_vol", envelopeNegative, aLcdd.material("Air"));
lLog << MSG::DEBUG << "Placing dector on the positive side: (cm) " << dim.z_offset() << endmsg;
buildOneSide(lLog, aLcdd, aSensDet, envelopePositiveVol, aXmlElement, 1);
lLog << MSG::DEBUG << "Placing dector on the negative side: (cm) " << -dim.z_offset() << endmsg;
buildOneSide(lLog, aLcdd, aSensDet, envelopeNegativeVol, aXmlElement, -1);
// Place the envelope
DD4hep::Geometry::PlacedVolume envelopePositivePhysVol = envelopeVol.placeVolume(envelopePositiveVol);
envelopePositivePhysVol.addPhysVolID("subsystem", 0);
DD4hep::Geometry::DetElement caloPositiveDetElem(caloDetElem, "positive", 0);
caloPositiveDetElem.setPlacement(envelopePositivePhysVol);
DD4hep::Geometry::PlacedVolume envelopeNegativePhysVol =
envelopeVol.placeVolume(envelopeNegativeVol, DD4hep::Geometry::Position(0, 0, -2 * dim.z_offset()));
envelopeNegativePhysVol.addPhysVolID("subsystem", 1);
DD4hep::Geometry::DetElement caloNegativeDetElem(caloDetElem, "negative", 0);
caloNegativeDetElem.setPlacement(envelopeNegativePhysVol);
DD4hep::Geometry::Volume motherVol = aLcdd.pickMotherVolume(caloDetElem);
DD4hep::Geometry::PlacedVolume envelopePhysVol =
motherVol.placeVolume(envelopeVol, DD4hep::Geometry::Position(0., 0., dim.z_offset()));
caloDetElem.setPlacement(envelopePhysVol);
envelopePhysVol.addPhysVolID("system", idDet);
return caloDetElem;
}
static DD4hep::Geometry::Ref_t createHCal (
DD4hep::Geometry::LCDD& lcdd,
xml_h xmlElement,
DD4hep::Geometry::SensitiveDetector sensDet
) {
// Get the Gaudi message service and message stream:
ServiceHandle<IMessageSvc> msgSvc("MessageSvc", "HCalConstruction");
MsgStream lLog(&(*msgSvc), "HCalConstruction");
xml_det_t xmlDet = xmlElement;
std::string detName = xmlDet.nameStr();
//Make DetElement
DetElement hCal(detName, xmlDet.id());
// Get status for the RecoGeometry what is status?
// xml_comp_t xmlStatus = xmlDet.child(_U(status));
// int status = xmlStatus.id();
// add Extension to Detlement for the RecoGeometry
// Let's skip this for now...
// Det::DetCylinderVolume* detVolume = new Det::DetCylinderVolume(status);
// hCal.addExtension<Det::IDetExtension>(detVolume);
// Make volume that envelopes the whole barrel; set material to air
Dimension dimensions(xmlDet.dimensions());
DD4hep::Geometry::Tube envelopeShape(dimensions.rmin(), dimensions.rmax(), dimensions.dz());
Volume envelopeVolume(detName, envelopeShape, lcdd.air());
// Invisibility seems to be broken in visualisation tags, have to hardcode that
// envelopeVolume.setVisAttributes(lcdd, dimensions.visStr());
envelopeVolume.setVisAttributes(lcdd.invisible());
// set the sensitive detector type to the DD4hep calorimeter
sensDet.setType("SimpleCalorimeterSD");
// Add structural support made of steel inside of HCal
xml_comp_t xFacePlate = xmlElement.child("face_plate");
double dRhoFacePlate = xFacePlate.thickness();
double sensitiveBarrelRmin = dimensions.rmin() + dRhoFacePlate;
DetElement facePlate("facePlate", 0);
DD4hep::Geometry::Tube facePlateShape(dimensions.rmin(), sensitiveBarrelRmin, dimensions.dz());
Volume facePlateVol("facePlate", facePlateShape, lcdd.material(xFacePlate.materialStr()));
facePlateVol.setVisAttributes(lcdd, xFacePlate.visStr());
PlacedVolume placedFacePlate = envelopeVolume.placeVolume(facePlateVol);
placedFacePlate.addPhysVolID("facePlate", facePlate.id());
facePlate.setPlacement(placedFacePlate);
// Add structural support made of steel at both ends of HCal
xml_comp_t xEndPlate = xmlElement.child("end_plate");
double dZEndPlate = xEndPlate.thickness();
DD4hep::Geometry::Tube endPlateShape(dimensions.rmin(), dimensions.rmax(), dZEndPlate);
Volume endPlateVol("endPlate", endPlateShape, lcdd.material(xEndPlate.materialStr()));
endPlateVol.setVisAttributes(lcdd, xEndPlate.visStr());
DetElement endPlatePos("endPlate", 0);
DD4hep::Geometry::Position posOffset(0, 0, dimensions.dz() - dZEndPlate);
PlacedVolume placedEndPlatePos = envelopeVolume.placeVolume(endPlateVol, posOffset);
placedEndPlatePos.addPhysVolID("endPlatePos", endPlatePos.id());
endPlatePos.setPlacement(placedEndPlatePos);
DetElement endPlateNeg("endPlate", 1);
DD4hep::Geometry::Position negOffset(0, 0, -dimensions.dz() + dZEndPlate);
PlacedVolume placedEndPlateNeg = envelopeVolume.placeVolume(endPlateVol, negOffset);
placedEndPlateNeg.addPhysVolID("endPlateNeg", endPlateNeg.id());
endPlateNeg.setPlacement(placedEndPlateNeg);
// Hard-coded assumption that we have two different sequences for the modules
std::vector<xml_comp_t> sequences = {xmlElement.child("sequence_a"), xmlElement.child("sequence_b")};
// NOTE: This assumes that both have the same dimensions!
Dimension moduleDimensions(sequences[0].dimensions());
double dzModule = moduleDimensions.dz();
// calculate the number of modules fitting in phi, Z and Rho
unsigned int numModulesPhi = moduleDimensions.phiBins();
unsigned int numModulesZ = static_cast<unsigned>(dimensions.dz() / dzModule);
unsigned int numModulesR = static_cast<unsigned>((dimensions.rmax() - sensitiveBarrelRmin) / moduleDimensions.dr());
lLog << MSG::DEBUG << "constructing " << numModulesPhi << " modules per ring in phi, "
<< numModulesZ << " rings in Z, "
<< numModulesR << " rings (layers) in Rho"
<< numModulesR*numModulesZ*numModulesPhi << " modules" << endmsg;
// Calculate correction along z based on the module size (can only have natural number of modules)
double dzDetector = numModulesZ * dzModule + dZEndPlate;
lLog << MSG::INFO << "correction of dz:" << dimensions.dz() - dzDetector << endmsg;
// calculate the dimensions of one module:
double dphi = 2 * dd4hep::pi / static_cast<double>(numModulesPhi);
double tn = tan(dphi / 2.);
double spacing = moduleDimensions.x();
double dy0 = moduleDimensions.dz();
double dz0 = moduleDimensions.dr() / 2.;
double drWedge = cos(dphi / 2.) * (dimensions.rmax() - sensitiveBarrelRmin) * 0.5;
double dxWedge1 = tn * sensitiveBarrelRmin - spacing;
double dxWedge2 = tn * cos(dphi / 2.) * dimensions.rmax() - spacing;
// First we construct one wedge with width of one module:
Volume subWedgeVolume("subWedge", DD4hep::Geometry::Trapezoid(
dxWedge1, dxWedge2, dzModule, dzModule, drWedge
), lcdd.material("Air")
);
for (unsigned int idxLayer = 0; idxLayer < numModulesR; ++idxLayer) {
auto layerName = std::string("wedge") + DD4hep::XML::_toString(idxLayer, "layer%d");
unsigned int sequenceIdx = idxLayer % 2;
double rminLayer = idxLayer * moduleDimensions.dr();
double rmaxLayer = (idxLayer + 1) * cos(dphi / 2.) * moduleDimensions.dr();
double dx1 = tn * (rminLayer + sensitiveBarrelRmin) - spacing;
double dx2 = tn * cos(dphi / 2.) * (rmaxLayer + sensitiveBarrelRmin) - spacing;
// -drWedge to place it in the middle of the wedge-volume
double rMiddle = rminLayer + 0.5 * moduleDimensions.dr() - drWedge;
Volume moduleVolume(layerName, DD4hep::Geometry::Trapezoid(
dx1, dx2, dy0, dy0, dz0
), lcdd.material("Air")
);
moduleVolume.setVisAttributes(lcdd.invisible());
unsigned int idxSubMod = 0;
// DetElement moduleDet(wedgeDet, layerName, idxLayer);
double modCompZOffset = -moduleDimensions.dz();
for (xml_coll_t xCompColl(sequences[sequenceIdx], _U(module_component)); xCompColl; ++xCompColl, ++idxSubMod) {
xml_comp_t xComp = xCompColl;
std::string subModuleName = layerName+DD4hep::XML::_toString(idxSubMod, "module_component%d");
double dyComp = xComp.thickness();
Volume modCompVol(subModuleName, DD4hep::Geometry::Trapezoid(
dx1, dx2, dyComp, dyComp, dz0
), lcdd.material(xComp.materialStr())
);
if (xComp.isSensitive()) {
modCompVol.setSensitiveDetector(sensDet);
}
modCompVol.setVisAttributes(lcdd, xComp.visStr());
// modCompVol.setVisAttributes(lcdd.invisible());
// DetElement modCompDet(wedgeDet, subModuleName, idxSubMod);
DD4hep::Geometry::Position offset(0, modCompZOffset + dyComp + xComp.y_offset()*2, 0);
PlacedVolume placedModCompVol = moduleVolume.placeVolume(modCompVol, offset);
placedModCompVol.addPhysVolID("sub_module", idxSubMod);
// modCompDet.setPlacement(placedModCompVol);
modCompZOffset += xComp.thickness()*2 + xComp.y_offset()*2;
}
DD4hep::Geometry::Position modOffset(0, 0, rMiddle);
PlacedVolume placedModuleVol = subWedgeVolume.placeVolume(moduleVolume, modOffset);
placedModuleVol.addPhysVolID("layer", idxLayer);
// moduleDet.setPlacement(placedModuleVol);
}
// Now we place the components along z within the wedge
Volume wedgeVolume("wedge", DD4hep::Geometry::Trapezoid(
dxWedge1, dxWedge2, dzDetector, dzDetector, drWedge
), lcdd.material("Air")
);
wedgeVolume.setVisAttributes(lcdd.invisible());
for (unsigned int idxZRow = 0; idxZRow < numModulesZ; ++idxZRow) {
double zOffset = -dzDetector + dZEndPlate * 2 + (2*idxZRow + 1) * dzModule;
auto wedgeRowName = DD4hep::XML::_toString(idxZRow, "row%d");
DD4hep::Geometry::Position wedgeOffset(0, zOffset, 0);
PlacedVolume placedRowVolume = wedgeVolume.placeVolume(subWedgeVolume, wedgeOffset);
placedRowVolume.addPhysVolID("row", idxZRow);
// wedgeDet.setPlacement(placedWedgeVol);
}
// Finally we place all the wedges around phi
for (unsigned int idxPhi = 0; idxPhi < numModulesPhi; ++idxPhi) {
auto modName = DD4hep::XML::_toString(idxPhi, "mod%d");
// Volume and DetElement for one row in Z
DetElement wedgeDet(hCal, modName, idxPhi);
// moduleVolume.setVisAttributes(lcdd, sequences[sequenceIdx].visStr());
// moduleVolume.setVisAttributes(lcdd.invisible());
// calculate position and rotation of this wedge;
// first rotation due to default rotation of trapezoid
double phi = 0.5 * dphi - idxPhi * dphi; // 0.5*dphi for middle of module
double yPosModule = (sensitiveBarrelRmin + drWedge) * cos(phi);
double xPosModule = (sensitiveBarrelRmin + drWedge) * sin(phi);
DD4hep::Geometry::Position moduleOffset(xPosModule, yPosModule, 0);
DD4hep::Geometry::Transform3D trans(
DD4hep::Geometry::RotationX(-0.5*dd4hep::pi)*
DD4hep::Geometry::RotationY(phi),
moduleOffset
);
PlacedVolume placedWedgeVol = envelopeVolume.placeVolume(wedgeVolume, trans);
placedWedgeVol.addPhysVolID("wedge", idxPhi);
wedgeDet.setPlacement(placedWedgeVol);
}
//Place envelope (or barrel) volume
Volume motherVol = lcdd.pickMotherVolume(hCal);
PlacedVolume placedHCal = motherVol.placeVolume(envelopeVolume);
placedHCal.addPhysVolID("system", hCal.id());
hCal.setPlacement(placedHCal);
return hCal;
}
