Jrd. Copley et Jc. Cook, AN ANALYSIS OF THE EFFECTIVENESS OF OSCILLATING RADIAL COLLIMATORS INNEUTRON-SCATTERING APPLICATIONS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 345(2), 1994, pp. 313-323
We describe a formalism which allows the transmission properties of os
cillating radial collimators to be discussed using the concept of ''vi
sibility'' functions. We develop a small angle approximation to the th
eory which proves to be valuable in describing typical instrumental si
tuations. Independent Monte Carlo (ray-tracing) simulations give very
good agreement with analytical results and provide a means for investi
gating situations where an analytical treatment would be extremely com
plicated.