title: Shielding calculations for a 100 MeV 30 mA proton beam.
abstract: The Study and Production of Exotic Species (SPES) project employs a 100 MeV, 30 mA proton beam that strikes a primary target. The resulting high-energy neutron flux impinges on a secondary target of depleted uranium to produce, through fission, beams of short-lived, neutron-rich nuclei. This paper deals with some of the preliminary shielding calculations for the bunker. Monte Carlo is employed with MCNPX and, because of the deep penetrations involved, the in-house variance reduction optimiser, the direct statistical approach. The calculations exhibited a number of typical features that are addressed and discussed.
authors.affiliation: ENEA FIS-NUC, V. M. Monte Sole 4, 40129 Bologna, Italy. kburn@bologna.enea.it
authors.forename: Kenneth W
authors.initials: KW
authors.lastname: Burn
authors.forename: Lodovico
authors.initials: L
authors.lastname: Casalini
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Nava
authors.forename: Carlo
authors.initials: C
authors.lastname: Petrovich
authors.forename: Luigi
authors.initials: L
authors.lastname: Tecchio
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007558:Italy; D015233:Models, Statistical; D009010:Monte Carlo Method; D010315:Particle Accelerators / Q000295:instrumentation*; D011522:Protons; D011829:Radiation Dosage; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods*; D011874:Radiometry / Q000379:methods*; D012542:Scattering, Radiation
chemical_list: D011522:Protons