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.

NIST Center for Neutron Research

Facility/Instrument Status

reactor

Maintenance Outage

Visit https://www.nist.gov/ncnr/ncnr-operations-schedule to view the Reactor Operating Schedule.

instruments

* Center for High Resolution Neutron Scattering (CHRNS) instrument.

Note: Schedules only provided for user instruments.

Confinement Building
Instrument	Status	Schedule
BT1 - High Resolution Powder Diffractometer	Operating	X
BT2 - Neutron Imaging Facility	Operating	X
FANS - Filter-analyzer neutron spectrometer	Not Operating Due To Lack of Resources	X
BT4 - Triple Axis Spectrometer	Not Operating Due To Lack of Resources	X
BT5 - Ultra-Small Angle Neutron Scattering (uSANS)	Not Operating Due To Lack of Resources	X
BT7 - Double Focusing Triple-Axis Spectrometer	Operating	X
BT8 - Residual stress diffractometer	Operating	X
BT9 - Multi-Axis Crystal Spectrometer (MACS)*	Operating	X
VT5 - Thermal-Neutron Prompt-Gamma Activation Analysis (Thermal PGAA)	Not Operating	X

Guide Hall
Instrument	Status	Schedule
NGA' - Neutron Depth Profiling (NDP)	Transitioning to Scientific Operations
NGA - Neutron Spin Echo Spectrometer (NSE)*	Transitioning to Scientific Operations	X
NGB - 10m Small Angle Neutron Scattering (10m SANS)	Not Operating Due To Lack of Resources	X
NGB - 30m Small Angle Scattering (NGB 30m SANS)	Transitioning to Scientific Operations	X
NGC - Neutron Physics	Transitioning to Scientific Operations
NGD- Polarized Beam Reflectometer/Diffractometer (PBR)	Not Operating Due To Lack of Resources	X
NGD- Off-Specular Reflectometer (MAGIK)	Transitioning to Scientific Operations	X
NGD - Prompt-Gamma Neutron Activation Analysis (Cold PGAA)	Transitioning to Scientific Operations	X
NG1 - Chromatic Analysis Neutron Diffractometer or Reflectometer (CANDOR)*	Operating	X
NG2 - High-flux Backscattering Spectrometer (HFBS)*	Transitioning to Scientific Operations	X
NG3 - Very Small Angle Neutron Scattering (vSANS)*	Operating	X
NG4 - Disk-Chopper Spectrometer (DCS)	Operating	X
NG5 - Polarized Large Angle Resolution (POLAR) Spectrometer	Instrument Under Development
NG6 - Cold Neutron Imaging Instrument (CNII)	Instrument Under Development
NG6 - CANDO	Instrument Under Development
NG6 - 9 Å Beamline	Instrument Under Development
NG7 - Neutron Interferometry & Optics Facility Alpha (NIOFa)	Transitioning to Scientific Operations
NG7 - Neutron Interferometry & Optics Facility (NIOF)	Transitioning to Scientific Operations
NG7 - Polarized ³He and Detector Experiment Station (PHADES)	Transitioning to Scientific Operations	X
NG7 - 30m Small Angle Neutron Scattering (NG7 30m SANS)	Transitioning to Scientific Operations	X
NG7 - Alpha Gamma Device	Transitioning to Scientific Operations

Created February 19, 2026, Updated August 11, 2026

Was this page helpful?