NGB 30m SANS - Small Angle Neutron Scattering     CHRNS-logo


NG7 SANS Schematic

Sponsored by the National Science Foundation as part of the Center for High Resolution Neutron Scattering (CHRNS), this instrument is installed on a split neutron guide NG-B. Designed to cover a wide Q-range, from 0.015 nm-1 to nearly 6 nm-1, it is suitable for examining structural features in materials ranging from roughly 1 to 500 nm. At least 75% of the instrument time will be allocated to guest researchers by the Beam Time Allocation Committee (BTAC).

Specifications / Capabilities:


0.015 nm-1 to 6.0 nm-1
Size Regime 1 nm to 500 nm
Source Neutron Guide (NG-B), cross-section: 60 mm x 60 mm
Monochromator Mechanical velocity selector with variable speed and pitch
Wavelength Range
5.0 Å to 20.0 Å
Wavelength Resolution
10% to 30% Δλ/λ (FWHM)
Source-to-Sample Distance 4 m to 16 m in 1.5m steps via insertion of guide sections
Collimation Circular pinhole collimation
Sample Size 0 mm to 25 mm diameter
Sample-to-Detector Distance 1.3 m to 13.1 m continuously variable
Detector 640 mm x 640 mm 3He position-sensitive proportional counter with a 5.08 mm x 5.08 mm resolution

Access Information:

NG3 SANS Flux at Sample

Operating Schedule:


Name: Cedric Gagnon
Phone: (301) 975-2020
100 Bureau Dr Stop 6102
Gaithersburg, MD 20899-6102

Name: Boualem Hammouda - Scheduling
Phone: (301) 975-3961

Name: Susan Krueger
Phone: (301) 975-6734

Name: Paul Butler
Phone: (301) 975-2028

Name: Grethe Jensen
Phone: (301) 975-4591