Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Spin Polarized Inelastic Neutron Spectrometer (SPINS)

Photograph of NCNR's Spin Polarized
         Inelastic Neutron Spectrometer (SPINS)


SPINS is located on guide NG-5. SPINS operates in a number of different modes including conventional triple axis mode, horizontally focusing mode, position-sensitive detector (PSD) and polarized beam mode. A vertically focusing pyrolytic graphite (PG) monochromator produces beams with wavelengths from 2.42 to 5.84 ? Energy resolution is in the range of 0.02 to 1 meV, depending on incident wavelength and collimation. 

PG and Be filters are available before the sample, and Be and BeO filters available after the sample to cut off higher order neutron contamination. 

A multi-crystal analyzer with 11 PG blades provides horizontal focusing capability. The focusing is fully automated and controlled from the instrument computer. (Currently unavailable)

In the polarized beam mode of operation, supermirror transmission polarizers, consisting of a stack of single crystal Si plates with Fe/Si supermirror coatings, are inserted in the incident and scattered beams.

Created April 2, 2019, Updated May 1, 2023