The U.S. Department of Energy (DOE) scientific user facilities – the High Flux Isotope Reactor (HFIR) and the Spallation Neutron Source (SNS) – are US Department of Energy sponsored research facilities open to researchers for advancing research in science and technology. HFIR and SNS, two of the world’s most advanced neutron scattering research facilities, offer thirty instruments covering a wide range of science and capabilities. Beam time is granted through the User Program and is free of charge with the condition researchers publish their results, making them available to the scientific community.

For Industries interested in learning more about proprietary research or how neutrons can help solve problems in industry, visit the Industrial Applications Program webpage.

Proposal Call 2020-A (SNS Only) Closes September 18, 2019                     

Proposals for beam time at the Spallation Neutron Source (SNS) will be accepted via the IPTS proposal system until Noon (EDT) on September 18, 2019. This call is for experiments anticipated to run at SNS from January to June 2020.

The High Flux Isotope Reactor (HFIR) is not included in the September proposal call due an extended outage. HFIR is scheduled to resume operation in November 2019. The HFIR operating period from November 2019 - April 2020 will be used for instrument commissioning, and for running the previously approved user experiments that were impacted by the shutdown. Many HFIR instruments underwent extensive upgrades, and more days than originally anticipated will be needed for both carryover experiments and commissioning time. HFIR will be ready to run new user experiments by May 2020.

The spring proposal call will close on February 26, 2020. This call will be for experiments anticipated to run at HFIR between May-December 2020, and at SNS between July-December 2020.

Want some tips for proposal writing? SNS-HFIR Proposal Writing Tutorial 

Already awarded beam time? Start Planning Your Visit to ORNL.

Download the Call for Proposals flyer here

Contact the User Office

The User Office is responsible for many aspects of the User Program. From submitting a proposal to coordinating your site access and training, the User Office staff are available to assist and answer your questions.


Phone: 865-574-4600