void AliITSMaterialsTGeo(TString gfile="geometry.root"){
// Macro to print out the ITS material definitions as found
// in the TGeo geometry file.
// retrives geometry
if(!gGeoManager) gGeoManager = new TGeoManager();
TGeoManager::Import(gfile.Data());
if (!gGeoManager) {
cout<<"geometry not found\n";
return;
} // end if
TList *medlist=gGeoManager->GetListOfMedia();
TGeoMedium *med;
TGeoMaterial *mat;
Int_t imed,nmed,i;
printf("imed Id Med_Name Mat_Name ");
for(i=0;i<20;i++) printf(" par[%2d] ",i);
printf("\n");
imed=0;
do{
med = (TGeoMedium*)(medlist->At(imed));
if(!med) continue;
/*if((((med->GetName())[0]=='I')&& // Only ITS.
((med->GetName())[1]=='T')&&
((med->GetName())[2]=='S')&&
((med->GetName())[3]=='_')))*/{
mat = med->GetMaterial();
if(mat)
printf("%4d %4d %30s %30s",imed,med->GetId(),med->GetName(),mat->GetName());
else
printf("%4d %4d %30s %30s",imed,med->GetId(),med->GetName(),"No Material");
for(i=0;i<20;i++) printf(" %12g",med->GetParam(i));
printf("\n");
imed++;
}
}while(med!=medlist->Last());
}
TGeoMedium* KVSpectroDetector::GetGeoMedium(const Char_t* mat_name){
// By default, return pointer to TGeoMedium corresponding to this KVMaterial.
// If argument "mat_name" is given, a pointer to a medium is return for this material.
// mat_name = "Vacuum" is a special case: if the "Vacuum" does not exist, we create it.
//
// Instance of geometry manager class TGeoManager must be created before calling this
// method, otherwise 0x0 will be returned.
// If the required TGeoMedium is not already available in the TGeoManager, we create
// a new TGeoMedium corresponding to the material given in argument.
if( !gGeoManager ) return NULL;
TString medName, matName;
if( !strcmp(mat_name,"") ){
// for gaseous materials, the TGeoMedium/Material name is of the form
// gasname_pressure
// e.g. C3F8_37.5 for C3F8 gas at 37.5 torr
// each gas with different pressure has to have a separate TGeoMaterial/Medium
matName = GetName();
KVIonRangeTableMaterial* irmat = KVMaterial::GetRangeTable()->GetMaterial(matName.Data());
if(irmat->IsGas()) medName.Form("%s_%f", matName.Data(), GetPressure());
else medName = GetName();
}
else{
matName = mat_name;
medName = mat_name;
}
TGeoMedium* gmed = gGeoManager->GetMedium( medName);
if( gmed ) return gmed;
TGeoMaterial *gmat = gGeoManager->GetMaterial( medName);
if( !gmat ){
if( !strcmp(matName.Data(), "Vacuum") ){
// create material
gmat = new TGeoMaterial("Vacuum",0,0,0 );
}
else{
// create material
gmat = GetRangeTable()->GetTGeoMaterial(matName.Data());
if(!gmat){
Error("GetGeoMedium","Material %s is nowhere to be found in %s"
,matName.Data(),GetRangeTable()->GetName());
return NULL;
}
gmat->SetPressure( GetPressure() );
gmat->SetTemperature( GetTemperature() );
gmat->SetTransparency(0);
}
}
// For the moment the names of material and medium do not
// depend on the temperature of the material.
gmat->SetName(medName);
gmat->SetTitle(matName);
// create medium
TGeoMedium* lastmed = (TGeoMedium*)gGeoManager->GetListOfMedia()->Last();
Int_t numed = (lastmed ? lastmed->GetId()+1 : 0); // static counter variable used to number media
gmed = new TGeoMedium( medName, numed, gmat );
numed+=1;
return gmed;
}