Hi Chris,

I'd like to make scattering simulations in LH2 but using the measured (MuScat) density of 0.0755g/cm3 rather than the standard value of 0.0708g/cm3. Is there a simple way to do this?

I imagine I need something like this:

G4double density = 0.0755*g/cm3;
G4double a = 1.008*g/mole;
new G4Material("LH2_MuScat",z=1.,a,density);

does this go into geant4 & recompile...? Or is there a simpler route, in a geometry file perhaps?

Thanks,

Tim