Monte Carlo based formula for radiation shielding assessment in the forward direction

Author

Wilkinson, C. ; Fitzgerald, D. ; Frankle, S. ; Hutson, R. ; Macek, R.

Author_Institution

Medium Energy Phys. Div., Los Alamos Nat. Lab., NM, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

2219

Abstract

Monte Carlo simulations of 800-MeV proton beam spills in common shielding materials show that neutron dose equivalent rates in the forward direction can be characterized by a Moyer Model-like formula. Particle transport codes were used to determine the neutron flux at depths up to 6 meters and for production angles from 0° to 30° for primary proton-beam spills on cylindrical beam stops. The flux was then converted to dose equivalent rate as a function of depth and angle. The results for three common shielding materials were combined and the resulting fitted formula provides a quick method for estimating the dose equivalent rates and shielding effectiveness outside thick shielding at forward angles

Keywords

Monte Carlo methods; neutron flux; proton accelerators; radiation monitoring; shielding; 800 MeV; LAMPF; Monte Carlo simulations; Moyer Model-like formula; cylindrical beam stops; forward direction; neutron dose equivalent rates; neutron flux; particle transport codes; primary proton-beam spills; radiation shielding; Concrete; Geometry; History; Magnetic materials; Monte Carlo methods; Neutrons; Particle beams; Particle production; Physics; Protons;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309274

Filename

309274