MCNP5 for proton radiography

• Main Authors: Hughes, H G, Brown, F B, Bull, J S, Goorley, J T, Little, R C, Liu, L C, Mashnik, S G, Prael, R E, Selcow, Elizabeth Carol, Sierk, A J, Sweezy, J E, Zumbro, J D, Mokhov, N V, Striganov, S, Gudima, K K
• Format: Conference Proceeding
• Language: English
• Published: United States 01-01-2004
• Subjects: ALGORITHMS; CHARGED-PARTICLE TRANSPORT; COULOMB SCATTERING; ELASTIC SCATTERING; FORM FACTORS; MAGNETIC FIELDS; PHYSICS; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; PROJECTILES; PROTON RADIOGRAPHY; PROTONS; SAMPLING; SCATTERING; TARGETS; TRANSPORT
• ISSN: 1742-3406; 1742-3406

The developmental version of MCNPS has recently been extended to provide for continuous-energy transport of high-energy protons. This enhancement involves the incorporation of several significant new physics models into the code. Multiple Coulomb scattering is treated with an advanced model that takes account of projectile and nuclear target form factors. In the next version, this model will provide a coupled sampling of both angular deflection and collisional energy loss, including straggling. The proton elastic scattering model is also new, based on recent theoretical work. Charged particle transport in the presence of magnetic fields is accomplished either by using transfer maps from the COSY INFINITY code (in void regions) or by using an algorithm adapted from the MARS code (in void regions or in scattering materials). Work is underway to validate and implement the latest versions of the Cascade-Exciton Model and the Los Alamos Quark-Gluon-String Model, which will process inelastic nuclear interactions and generate secondary particles.