const Int_t AliITSv11GeometrySDD::fgkLay3Nladd = 14;
const Double_t AliITSv11GeometrySDD::fgkLay3CoolPipeSuppH = 7.5*fgkmm;
-const Double_t AliITSv11GeometrySDD::fgkLay4Rmin = 235.*fgkmm;
+const Double_t AliITSv11GeometrySDD::fgkLay4Rmin = 234.8*fgkmm;
const Double_t AliITSv11GeometrySDD::fgkLay4Rmax = 286.*fgkmm;
const Double_t AliITSv11GeometrySDD::fgkLay4Length = (671.+0.)*fgkmm; // ladder+supporting rings (length of the virtual tube)
const Double_t AliITSv11GeometrySDD::fgkLay4LadderLength = 671.*fgkmm;