PbBi THickness PntSource

2mm thick PbBi, 10 MeV, point source G4beamline pencil beam 10 cm radius

beam ellipse particle=e- nEvents=1000000 beamZ=0.0 beamX=0. beamY=0. \
sigmaX=10.0 sigmaY=10.0 sigmaXp=0.000 sigmaYp=0.000 \
meanMomentum=10. sigmaE=0. maxR=10.

 PbBi Thickness (mm) #positrons/million electrons (G4Beamline) #positrons/million electrons (MCNPX) 1 1138,1154,1097,1159,1125 =113525 1.5 1668,1701,1639, 1644, 1628=165629 2 1937,1930,1851,1874,1945=190742 3 1889,1821,1852,1809,1859=184632 4 1726,1696,1673,1693,1681=1694 20 5 1566,1543,1546,1625,1566=156933 6 1549, 1486,1564,1545,1452=1520 50 7 1462,1327, 1407,1489 ,1477=1432 67 8 1289, 1335,1280, 1271, 1280 = 1291 25 10 1141,1241, 1199, 1202, 1148 =118642

Below is the result using minerve

 PbBi Thickness (mm) #positrons/million electrons (G4Beamline) #positrons/million electrons (MCNPX) 1 981,946,985,1046,1017 1091 1.5 1494,1444 ,1447,1409 ,1486 1728 2 1686,1700,1610, 1682,1656 43 1984 3 1648,1573, 1524,1670, 1592 13 1986 4 1528,1538, 1438, 1468, 1577 39 1858 5 1354,1419 ,1310 , 1397, 1327 1646 6 1256, 1286 , 1291,1350, 1210 37 1541 7 37 1541 10 989,1024 , 1061, 1002, 1103 1216

Electrons and Positrons after 2mm of LBE:

Electrons:

Positrons: