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k100 simulation test

* Goals 
  * To test neutron flux at the payload with full shielding 
  * Test neutron capture and photon emission simulation
  * Check photon-flux and energy spectrum in NaI tiles

Neutron flux at the payload

  • Using Anthony's k100 simulation repository to build and test framework: Github repo
  • It already includes:
    • Tower + fridge + Shielding + Other lab environment
    • Pu-Be energy spectrum data file → input for source particle gun:
    • Generated 50k events: (uni-directional beam: 1 meter away from detector)
    • Parent particle in the detector:
    • Total deposited energy:
    • Only ~ 36 out of 50k neutrons reaching the detector?
    • Example event display: