G4Beamline PbBi

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Development of a Positron source using a PbBi converter and a Solenoid

Converter target properties

Definition of Lead Bismuth


1cm diameter target 2 mm thick PbBi

0.5 Tesla solenoid

G4BeamLine

Target thickness optimization

First simple test is to send 1 million, 10 MeV electrons towards a PbBi target and count how many positrons leave the downstream side

PbBi Thickness (mm) #positrons/million electrons (GEANT?) #positrons/million electrons (MCNPX)
1 960
2 1963 1984
3 2233
4 2184
5 2042
6 1851

Solenoid

Positrons#Simulations