Development of code QMCPrad for fast high-energy proton radiography

In order to simulate high-energy proton radiography quickly, the code Quick Monte Carlo Proton Radiography (QMCPrad) is developed by using MC technique and MC skills. The code is proven correct by comparing the simulation results to MCNPX's and simulating the experiment E955. In the QMCPrad, the nuclear interaction is modeled with the explicit capture model, and the multiple Coulomb scatter is treated with the condensed history method as one scatter during the proton passing through the object. These two methods reduce amounts of time for simulation. The code QMCPrad has the capability to simulate the proton transport if quadrupole. The comparisons of the results of the QMCPrad and MCNPX and the simulation result of E955 show that the QMCPrad can simulate the high-energy proton radiography quantificationally, and is a useful tool for the design of proton radiography. (authors)