The multiple disk chopper neutron time-of-flight spectrometer at NIST

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:225251

Altorfer, F B; Cook, J C ^[1]; Copley, J R.D. ^[2]

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1. Univ. of Maryland, College Park, MD (United States)
2. National Inst. of Standards and Technology, Gaithersburg, MD (United States)

A highly versatile multiple disk chopper neutron time-of-flight spectrometer is being installed at the Cold Neutron Research Facility of the National institute of Standards and Technology. This new instrument will fill an important gap in the portfolio of neutron inelastic scattering spectrometers in North America. It will be used for a wide variety of experiments such as studies of magnetic and vibrational excitations, tunneling spectroscopy, and quasielastic neutron scattering investigations of local and translational diffusion. The instrument uses disk choppers to monochromate and pulse the incident beam, and the energy changes of scattered neutrons are determined from their times-of-flight to a large array of detectors. The disks and the guide have been designed to make the instrument readily adaptable to the specific performance requirements of experimenters. The authors present important aspects of the design, as well as estimated values of the flux at the sample and the energy resolution for elastic scattering. The instrument should be operational in 1996.

• OSTI ID: 225251
• Report Number(s): CONF-941144--; ISBN 1-55899-278-2
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
66 PHYSICS
DESIGN
DIAGNOSTIC TECHNIQUES
NBSR REACTOR
NEUTRON CHOPPERS
NEUTRON SPECTROMETERS
PERFORMANCE
REACTION PRODUCT TRANSPORT SYSTEMS
REACTOR EXPERIMENTAL FACILITIES
USES