MONTE CARLO MODELING OF A VARIAN 2100C 18 MV MEGAVOLTAGE PHOTON BEAM AND SUBSEQUENT DOSE DELIVERY USING MCNP5 A Varian 2100C 18 MV photon beam has been modeled in this work using theMCNP5 Monte Carlo particle transport user code. The subsequent beam irradiation wasalso delivered to a water phantom and benchmarked against experimentally measureddepth dose data. The model presented in this work establishes the foundation to whichfurther beam characteristics tuning is required in orde ...