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.

2019-B Proposal Call NOW OPEN!  

The next proposal call will close at noon March 27, 2019 for experiments anticipated to run at SNS from July to December in 2019. 

Proposals for beam time at Oak Ridge National Laboratory’s Spallation Neutron Source (SNS) will be accepted via the web-based proposal system until Noon (EDT), Wednesday, March 27, 2019. This call is for SNS instruments only for experiments anticipated to run July–December 2019. HFIR is not included in the March proposal call due an extended outage that began in November 2018. When HFIR resumes operation, the beam time will be reserved for experiments awarded time between November 2018 and June 2019.

Calls for General User Proposals occur twice a year. This is a competitive process, involving external peer review. Beam time is granted based on scientific importance and research feasibility. 

To be considered for the upcoming run cycles at  SNS, proposals can be submitted any time before the indicated deadline. Once a proposal call closes, the next call will begin accepting proposals.


Ready to get started? Learn How to Submit a Proposal.

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 poster 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