• Write a document consisting of the what is in the G4 Monte Carlo. Noting possible differences from actual physical construction of the Hadron Absorber, Muon Alcoves, etc... and other approximations for imperfections in actual construction.
  
• Gap Size between Asorber Core and surrounding blu blocks
  
• Water content in the air
  
• Irregularity of shockrete that surrounds the caverns (Abosrber and Alcoves)
• Uneveness in the blu blocks surrounding the Absorber Core that provide undulating gap size
• Examine the G4 model that is currenlty being used for the rock
  
• What is the effect of more or less water in the rock
  
• Density: the downward angle of the beam path puts it passing between two different geological strata. The strata demarcation happens at roughly the depth of the Absorber. There could be a slight density shift in rock happening between the Hadron Absorber Hall and the 2nd muon alcove due to moving through the different strata.
  
• The walls and shockrete are not exact and so what is the effect on particles if the walls were to change by +/- X feet
• 
  
• Export geometry to FLUKA 2005 to use a different standard of physics processes. Also not every particle that registers charge in the muon monitors is a muon. Exporting to FLUKA 2005 may provide more reliable physics.
  
• Track the number of neutrons, electrons, positrons, muons per cm^2
• or any other particle for which a physics process may introduce a higher signal in the muon monitors
  
• Run some simulations where the
• Proton beam hits the dump directly
• hornoff running
• Different horn positions (LE-10, pME, pHE)

Run through the gammet of things that could possibly affect the muon muon response and see if anything changes result. A certain way to do this is to look at a plot of Efficiency vs. Pz for muons. Where Efficiency is defined as the number of muons at each muon monitor divided by muons at end of the decay pipe. This can be quickly done by creating a unweighted muon beam the size of the decay pipe and having the beam start at the end cap. Plots of Efficiency vs. Pz look like the following:

Fig. 1
80 GeV muon beam with the cross-section of the surface area of the decay pipe endcap, started at the end of the Decay Pip

Where the tails preceding the quick increase in efficiency is most  likely the result of gaps between the Absorber Core and surrounding shielding.