Published 2002 | Version v1
Journal article Metadata-only

MACS low-background doubly focusing neutron monochromator

Creators

  • 1. Oak Ridge National Laboratory, Spallation Neutron Source, Oak Ridge, TN 37830 (United States)
  • 2. Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States)
  • 3. National Institute of Standards and Technology, Gaithersburg, MD 20899 (United States)
  • 4. Department of Mechanical Engineering, University of Maryland, College Park, MD 20742 (United States)

Description

A novel doubly focusing neutron monochromator has been developed as part of the Multi-Analyzer Crystal Spectrometer (MACS) at the NIST Center for Neutron Research. The instrument utilizes a unique vertical focusing element that enables active vertical and horizontal focusing with a large, 357-crystal (1428 cm2), array. The design significantly reduces the amount of structural material in the beam path as compared to similar instruments. Optical measurements verify the excellent focal performance of the device. Analytical and Monte Carlo simulations predict that, when mounted at the NIST cold-neutron source, the device should produce a monochromatic beam (ΔE=0.2 meV) with flux φ>108 n/cm2 s. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1007/s003390201658

Additional details

Identifiers

DOI
10.1007/s003390201658;

Publishing Information

Journal Title
Applied Physics. A, Materials Science and Processing
Journal Volume
74
Journal Issue
1,Suppl
Journal Page Range
p. s255-s257
ISSN
0947-8396
CODEN
APAMFC

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
34024410
Subject category
S43: PARTICLE ACCELERATORS;
Descriptors DEI
BEAM TRANSPORT; COLD NEUTRONS; FOCUSING; MONOCHROMATORS; NEUTRON BEAMS; NEUTRON FLUX; NEUTRON SOURCES; NEUTRON SPECTROMETERS
Descriptors DEC
BARYONS; BEAMS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; MEASURING INSTRUMENTS; NEUTRONS; NUCLEON BEAMS; NUCLEONS; PARTICLE BEAMS; PARTICLE SOURCES; RADIATION FLUX; RADIATION SOURCES; SPECTROMETERS

Optional Information

Notes
With 3 figs., 5 refs.