“…Shielding guidelines and requirements have been developed through extensive simulations using the EGS4 1 , PHOTON 2 , and STAC8 3 shielding computer programs and have been published to provide the basis for the beamline and front-end shielding designs in LS-141 4 , TB-5 5 , TB-7 6 , TB-20 7 , TB-21 8 , and TB-44 9 . The neutron dose simulations for the first optics enclosure (FOE) and for the experiment floor were done by the PICA 10 neutron shield program and later have been confirmed by measurements 11 .…”