====== Cosmogenic Working Group ====== Members: * Angela Reisetter * Chao Zhang * Dongming Mei * Vitaly Kudryavtsev ===== Goals ===== * Track the cosmic ray background from surface down to underground and calculate the flux at different level of depth. * Validate Geant4 muon propagation * Establish whether to employ MUSUN in C++ as a standard, or just work with Geant4? * Estimate the uncertainty of the cosmogenic background in different levels underground. * Establish a standard method for each site to prevent having to re-generate the muons each time * Continue to interact with Geant4 collaboration on the physics lists relevant to muon production of neutrons * Link to the Fluka v Geant working group on physics issues