Added material for the TPC electronics/cables (40% of X0)

[u/mrichter/AliRoot.git] / TPC / AliTPCv3.cxx

diff --git a/TPC/AliTPCv3.cxx b/TPC/AliTPCv3.cxx
index 9e63429deb4629340ab9d096105cc02cab28d004..1b765c031908e36496d1b6f9b50a9ae7c19389c3 100644 (file)
--- a/TPC/AliTPCv3.cxx
+++ b/TPC/AliTPCv3.cxx
@@ -744,6 +744,14 @@ void AliTPCv3::CreateGeometry()
   sh->DefineSection(1,4.,81.5-shift,250.75-shift);
   TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
   //
+  TGeoMedium *m9 =  gGeoManager->GetMedium("TPC_Si"); 
+  TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
+  el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
+  el->DefineSection(1,1.872,81.5-shift,250.75-shift);
+  TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si 
+  //
+  shv->AddNode(elv,1);
+  //
   ys = shift*TMath::Sin(OpeningAngle);
   xs = shift*TMath::Cos(OpeningAngle);
   swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));