Study of a Novel Shielding Principle for Protection against Intense Gamma-Ray Beams.
Abstract
The work reported here draws attention to the geometrical disposition of shield elements as an important means of enhancing shield efficiency in a situation where, at first sight, the preponderance of Compton scattering seems to preclude improvements by any method other than increasing the total mass. The principal effort in Phase I has been to demonstrate the practical utility of using good geometry, for which purpose it has been necessary to develop a mathematical description of what good geometry - hitherto a vague and qualitative concept - actually is. The advantage of layering the shield or of making other geometrical modifications relying on the same theme, such as introducing thickness gradients, has also been investigated for situations in which the theoretically ideal geometry cannot be achieved because of fabrication constraints. The importance of this Phase I study is that it verifies that dramatic effect of shield configuration on target dose, indicating the potentiality of methods for shield design other than the conventional mass-increase approach, and thus illustrates the need to include geometric optimization as an essential component in overall shield design. In this respect, a variant of the Monte Carlo method, called inverse Monte Carlo, may be useful in future studies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 15, 1984
- Accession Number
- ADA154374
Entities
People
- F. O'foghludha
- W. L. Dunn
Organizations
- Applied Research Associates (United States)