Radiation shielding design for neutron diffractometers assisted by Monte Carlo methods
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Date
2005-11-27
Authors
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Journal ISSN
Volume Title
Publisher
The Bragg Institute, Australian Nuclear Science and Technology Organisation
Abstract
The absorption and scattering of neutrons by neutron optical elements, beam stops and other components present significant radiation shielding challenges due to the generation of gamma radiation. In the case of neutron absorbers incorporating lithium- 6, fast neutrons are also generated. We show how Monte Carlo simulations using the MCNP computer code may be used to model the radiation fields produced by such components, thereby assisting in the choice of materials for shutters and other elements and assisting in the design of shielding. We discuss the use of these techniques to model instrument shielding bunkers, comprised principally of lead walls with boron-containing linings, for diffractometers at the OPAL Reactor, ANSTO. © 2005 The Authors
Description
Physical copy held by ANSTO Library at DDC 539.7217/2
Keywords
Absorptivity, Fast neutrons, Gamma radiation, Lithium 6, Monte Carlo Method, Neutron absorbers, Neutron beams, Neutron diffractometers, Shielding materials, Simulation
Citation
Ersez, T., Braoudakis, G., & Osborn, J. C. (2005). Radiation shielding design for neutron diffractometers assisted by Monte Carlo methods. Paper presented at the Eighth International Conference on Neutron Scattering ICNS 2005: "Neutrons for structure and dynamics - a new era", Sydney Convention & Exhibition Centre, Sydney, Australia, 27 November-2 December 2005. In Final Programme and Abstract Book, (pp. 159).