Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 631, Issue 1, Pages 98-104Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2010.11.110
Keywords
Atom and neutron optics; X-ray optics
Categories
Funding
- US Department of Energy, Office of Basic Energy Sciences [DE-FG02-09ER46556, DE-FG02-09ER46557]
- National Science Foundation [DMR-0526754]
- U.S. Department of Energy (DOE) [DE-FG02-09ER46556] Funding Source: U.S. Department of Energy (DOE)
Ask authors/readers for more resources
We demonstrate neutron beam focusing by axisymmetric mirror systems based on a pair of mirrors consisting of a confocal ellipsoid and hyperboloid. Such a system, known as a Wolter mirror configuration, is commonly used in X-ray telescopes. The axisymmetric Wolter geometry allows nesting of several mirror pairs to increase collection efficiency. We implemented a system containing four nested Ni mirror pairs, which was tested by the focusing of a polychromatic neutron beam at the MIT Reactor. In addition, we have carried out extensive ray-tracing simulations of the mirrors and their performance in different situations. The major advantages of the Wolter mirrors are nesting for large angular collection and aberration-free performance. We discuss how these advantages can be utilized to benefit various neutron scattering methods, such as imaging, SANS, and time-of-flight spectroscopy. (C) 2010 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available