N I S T Center for Neutron Research
Accomplishments and Opportunities 2001
N I S T Center for Neutron Research Layout
The following are descriptions of the N I S T Center for Neutron Research physical layout, and are numbered by the instrument described.
Graphics caption for instrument 1. A Cold Neutron Depth Profiling instrument (not shown) for quantitative profiling of subsurface impurities currently at this site will be moved to another position. Shown is a proposed Triple Axis Cold Neutron Crystal Spectrometer with double focusing monochromator and multiple crystal analyzer/detectors that can be flexibly configured for several energies simultaneously or for high throughput at one energy.
Graphics caption for instrument 2. B T - 7 Triple Axis Spectrometer with fixed incident energy for measurements of excitations and structure.
Graphics caption for instrument 3. B T - 8 Residual Stress Diffractometer optimized for depth profiling of residual stress in large components.
Graphics caption for instrument 4. B T - 9 Triple Axis Crystal Spectrometer for measurements of excitations and structure.
Graphics caption for instrument 5. Thermal Column A very well-thermalized beam of neutrons used for radiography, tomography, dosimetry and other experiments.
Graphics caption for instrument 6. B T - 1 Powder Diffractometer with 32 detectors; incident wavelengths of 0.208 nm, 0.154 nm, and 0.159 nm, with highest resolution of δ d / d = 8 x 10-4.
Graphics caption for instrument 7. B T - 2 Triple Axis Crystal Spectrometer with polarized beam capability for measurement of magnetic dynamics and structure.
Graphics caption for instrument 8. B T - 4 Filter Analyzer Neutron Spectrometer with cooled Be / Graphite filter analyzer for chemical spectroscopy.
Graphics caption for instrument 9. B T - 5 Perfect Crystal Diffractometer S A N S small angle neutron scattering instrument for microstructure on the 104 nm length scale, sponsored by the National Science Foundation and N I S T, part of the Center for High Resolution Neutron Scattering (C H R N S).
Graphics caption for instrument 10. N G - 7 Horizontal Sample Reflectometer allows reflectivity measurements of free surfaces, liquid vapor interfaces, as well as polymer coatings.
Graphics caption for instrument 11. Neutron Interferometry and Optics Station with perfect silicon interferometer; vibration isolation system provides exceptional phase stability and fringe visibility.
Graphics caption for instrument 12. Spin Polarized Triple Axis Spectrometer (S P I N S) using cold neutrons with position sensitive detector capability for high resolution studies — part of C H R N S.
Graphics caption for instrument 13. Spin Echo Spectrometer offering neV energy resolution, based upon Jülich design, sponsored by N I S T, Jülich and ExxonMobil — part of C H R N S.
Graphics caption for instrument 14. Prompt Gamma Activation Analysis cold neutron fluxes allow detection limit for H of 1 µ g to 10 µ g. Focused beams are available for profiling.
Graphics caption for instrument 15. N G - 7 30 m S A N S for microstructure measurements sponsored by N I S T, ExxonMobil, and the University of Minnesota.
Graphics caption for instrument 16. Neutron Physics Station - a cold neutron beam 150 mm x 60 mm, available for fundamental neutron physics experiments.
Graphics caption for instrument 17. Fermi Chopper T O F Spectrometer a hybrid time-of-flight spectrometer for inelastic scattering with incident wavelengths between 0.23 nm and 0.61 nm chosen by focusing pyrolytic graphite crystals. A simple Fermi chopper pulses the beam.
Graphics caption for instrument 18. Disk Chopper T O F Spectrometer versatile time-of-flight spectrometer, with beam pulsing and monochro-matization effected by 7 disk choppers. Used for studies of dynamics in condensed matter, including macromolecular systems — part of C H R N S.
Graphics caption for instrument 19. N G - 3 30 m S A N S for microstructure measurements sponsored by the National Science Foundation and N I S T — part of C H R N S.
Graphics caption for instrument 20. Backscattering Spectrometer: high intensity inelastic scattering instrument with energy resolution < 1 µ eV, for studies of motion in molecular and biological systems — part of C H R N S.
Graphics caption for instrument 21. 8 m S A N S for polymer characterization, sponsored by N I S T Polymers Division.
Graphics caption for instrument 22. Vertical Sample Reflectometer instrument with polarization analysis capability for measuring reflectivities down to 10-8 to determine subsurface structure.
Graphics caption for instrument 23. Vertical Sample Reflectometer instrument with polarization analysis capability for measuring reflectivities down to 10-8, optimized for biological applications. It will have a position-sensitive detector for measuring off-specular reflections.