/// Find a detector element by it's system ID
DetElement LCDDHelper::detectorByID(int id) const {
const LCDD::HandleMap& dets = ptr()->detectors();
for(LCDD::HandleMap::const_iterator i=dets.begin(); i!=dets.end(); ++i) {
DetElement de = (*i).second;
if ( de.id() == id ) return de;
}
return DetElement(0);
}
static Ref_t create_detector(Detector& description, xml_h e, SensitiveDetector sens) {
xml_det_t x_det = e;
xml_dim_t dim = x_det.dimensions();
Material air = description.air();
string det_name = x_det.nameStr();
DetElement sdet (det_name,x_det.id());
double z = dim.outer_z();
double rmin = dim.inner_r();
double r = rmin;
int n = 0;
Tube envelope(rmin,2*rmin,2*z);
Volume envelopeVol(det_name+"_envelope",envelope,air);
for(xml_coll_t c(x_det,_U(layer)); c; ++c) {
xml_comp_t x_layer = c;
for(int i=0, im=0, repeat=x_layer.repeat(); i<repeat; ++i, im=0) {
string layer_name = det_name + _toString(n,"_layer%d");
double rlayer = r;
Tube layer_tub(rmin,rlayer,2*z);
Volume layer_vol(layer_name,layer_tub,air);
for(xml_coll_t l(x_layer,_U(slice)); l; ++l, ++im) {
xml_comp_t x_slice = l;
double router = r + x_slice.thickness();
Material slice_mat = description.material(x_slice.materialStr());
string slice_name = layer_name + _toString(im,"slice%d");
Tube slice_tube(r,router,z*2);
Volume slice_vol (slice_name,slice_tube,slice_mat);
if ( x_slice.isSensitive() ) {
sens.setType("calorimeter");
slice_vol.setSensitiveDetector(sens);
}
r = router;
slice_vol.setAttributes(description,x_slice.regionStr(),x_slice.limitsStr(),x_slice.visStr());
// Instantiate physical volume
layer_vol.placeVolume(slice_vol);
}
layer_vol.setVisAttributes(description,x_layer.visStr());
layer_tub.setDimensions(rlayer,r,z*2,0,2*M_PI);
PlacedVolume layer_physvol = envelopeVol.placeVolume(layer_vol);
layer_physvol.addPhysVolID("layer",n);
++n;
}
}
envelope.setDimensions(rmin,r,2*z);
// Set region of slice
envelopeVol.setAttributes(description,x_det.regionStr(),x_det.limitsStr(),x_det.visStr());
PlacedVolume physvol = description.pickMotherVolume(sdet).placeVolume(envelopeVol);
physvol.addPhysVolID("system",sdet.id()).addPhysVolID(_U(barrel),0);
sdet.setPlacement(physvol);
return sdet;
}