Collimator Cave

• Simulation of Collimator Cave and Pair Spectrometer background

Bellow are some plots with the dose distributions in the experimental hall and the collimator cave which Pavel Degtiarenko produced using his GEANT simulation. Pavel's simulation is expected to provide more realistic production of neutrons in gamma(e) nucleus interactions.

Old collimator cave geometry implemented in Geant simulation ( 2007-12-07 )

• Integrated dose distributions

• Neutrons produced by 10000 beam photons

New collimator cave geometry optimized with Geant simulation

• Integrated dose distributions

• Dose distribution in front of the GlueX detector as a function of the radial distance from the beamline

Estimates of ionizing radiation doses in some areas of the collimator cave (needed to choose appropriate materials and position of electronics)

• Ionizing radiation doses