Message: a problem about the LUT model of optical surface Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

None a problem about the LUT model of optical surface 

Forum: Processes Involving Optical Photons
Date: 22 Dec, 2010
From: <>

   I simulated the scintillating photons from a box scintillator wrapped 
by ESR film, and the optical surface is defined by LUT model as following:

    G4OpticalSurface* OpLYSOSurface = new G4OpticalSurface("LYSOSurface");
    G4LogicalBorderSurface* LYSOSurface = 
                                 new G4LogicalBorderSurface("LYSOSurface",
    G4double AirRindex[nEntries] = {1.0, 1.0, 1.0};
    G4double ESRreflec[nEntries] = {0.98, 0.98, 0.98};
    G4MaterialPropertiesTable* myST1 = new G4MaterialPropertiesTable();
    myST1->AddProperty("RINDEX", LYSO_Energy, AirRindex, nEntries);
    myST1->AddProperty("REFLECTIVITY", LYSO_Energy, ESRreflec, nEntries);

   But, I find a strange place about this model. The photon seems to have 
a little probability to pass through the reflecting wrap. As I know, 
a random piece of solid angle (denoted by  and phi)is looked up for 
the direction of the reflected photon, and -90deg<<90deg, so the 
reflected photon could not pass through the wrap to the outside world.
How does this happen?

Inline Depth:
 1 1
 All All
Outline Depth:
 1 1
 2 2
 All All
Add message: (add)

1 Feedback: Re: a problem about the LUT model of optical surface   (Gumplinger Peter - 17 Jan, 2011)
 Add Message Add Message
to: "a problem about the LUT model of optical surface"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews