Call for Proposals

The Facility for Rare Isotope Beams (FRIB) is a U.S. Department of Energy (DOE) Office of Science User Facility, open to all interested researchers, subject to applicable laws and regulations. Beam time is granted based on a merit review of proposals. There is no charge for scientific users who are doing non-proprietary work, with the understanding that they are expected to publish their results. Full cost recovery is required for proprietary work. The call for proposals for beam time to be considered at the first meeting of the FRIB Program Advisory Committee (PAC1) was released on 13 November 2021, with a proposal submission deadline of 22 February 2021. The PAC1 meeting is scheduled for August 2021. For information on what was offered in the PAC1 call for proposals, see below.

FRIB PAC1 will consider experiments using fast, stopped and reaccelerated beams. Review the Areas and Instruments in Operation page for a list of experimental areas and instruments that are available at FRIB for PAC1.

Additional information on the FRIB PAC process is available on the Program Advisory Committee page and the Proposal-Preparation Process page.

Timeline for FRIB PAC1

22 February 2021: Proposals submitted online by 5 p.m. EST

August 2021: FRIB PAC1 Meeting

August 2021 (one week later): List of approved experiments posted to the FRIB website and spokespeople notified.

FRIB Scientific Director Brad Sherrill is the non-voting convener and Manager for User Relations Jill Berryman is the PAC administrator.  

Experimental Areas for FRIB PAC1 experiments

The layout of the experimental areas for FRIB PAC1 is given on the Areas and Instruments in Operation page and summarized below.


  • S0 (FRIB Decay Station Initiator)
  • S3 vault (S800, includes GRETINA)
  • S2 vault (General purpose, includes sweeper magnet and MoNA)

It is possible to use a number of auxiliary instruments in the S2 area and at the secondary target position of the S800. Collaboration is required for use of auxiliary instruments not supported by the laboratory. A contact person for each instrument is given on the website.



  • General purpose beamline


  • Two general purpose beamlines


  • SOLARIS and SOLARIS Beamline (includes space for large gamma-ray arrays)
  • General purpose beamline

It is possible to use a number of auxiliary instruments on the general purpose beamlines. Collaboration is required for use of auxiliary instruments not supported by the laboratory. A contact person for each instrument is given on the website.


Review the FRIB PAC1 beams page for additional information.

FRIB beam physicists will assist in calculation of beam rates and purities, and will need to validate any scientific user calculated rates prior to proposal submission. To estimate a beam intensity, scientific users may start with the FRIB beam rate calculator. While not required, scientific users can use LISE++ to make refined estimates of rate and to check the purity of the beam. Scientific users can view the LISE++ tutorial: Making 64Cr PDF for help in using LISE++. This presentation shows a simulation of producing a rare-isotope beam at FRIB. It provides options on how to optimize the beam for either higher rate or higher purity.

Once you have decided on an isotope of interest for the proposal, please contact the Manager for User Relations to be assigned a beam physicist. The beam physicist will help you with the detailed calculation of the beam(s) you wish to propose for your experiment.

Submitting your proposal

The primary spokesperson of the experiment must register on the FRIB User Portal to start his/her proposal. After registering, navigate to the Proposal section. This section will walk the primary spokesperson through all of the necessary information including: co-spokespeople, participants, beam type, beamline, instruments, scheduling information, special requests, beam parameters/worksheets, safety information, device worksheets, and the proposal text. The body of the proposal, or proposal text, can be uploaded directly to the FRIB PAC Application as a pdf. The proposal text should be no more than four 8.5x11 pages, 10 pt Arial font, 1.5 spaced, with additional pages allowed for references, tables, and figures. Please include the following:

  • Scientific motivation
  • Specific goals of the proposed experiment
  • Experiment details
    • what is to be measured;
    • figure/diagram of experimental instrument;
    • demonstration of technical feasibility of measurement (by simulation and/or reference to prior work);
    • justification for time requested
      • counting rate estimates (including assumptions), expected statistics, and level of uncertainty in the final measurement;
      • explanation of other time requested (include time for debugging the experimental setup, calibrations, any test runs, and any stable beam runs necessary for reference, etc.);
    • an indication of present state of readiness of the experiment and an estimated earliest date for the run;
    • a clear statement of any technical assistance (design, fabrication, installation, etc.) that may be requested from FRIB;
    • list of items that would be brought to FRIB.

Technical review

Prior to the PAC meeting, technical experts (FRIB staff members) will review each proposal to assess its technical feasibility from the point of view of device capability and beam delivery. Any issues identified in the technical review will be promptly communicated to the spokesperson of the proposal, and the issue(s) along with response(s) from the spokesperson will be distributed to PAC.

Safety and compliance

FRIB scientific users must perform their experiments safely and within the FRIB regulatory framework. To allow us to assess any hazards associated with the specific experimental set-up, the Safety Information Worksheet must be completed in full as part of the proposal package. MSU and FRIB safety experts will review all proposals upon receipt for safety issues. The committee’s findings will be promptly communicated to the spokespersons and to PAC. For approved proposals, any specialized or non-commercial equipment brought to FRIB will require an evaluation be prepared with FRIB staff to review potential hazards and planned mitigation strategies. Transportation of all radioactive source materials and activated materials (targets) must comply with the FRIB Laboratory radioactive materials license and must be approved in writing by FRIB Laboratory Radiation Safety Officer Petra Grivins.

Letters of Intent

Letters of Intent will be accepted for the following: programs that require significant investments in new instruments; requests for new beams or new beam capability at ReA. The Letter of Intent may be sent to the Manager for User Relations as a PDF. The spokesperson of a Letter of Intent will receive feedback from PAC on how a proposal for the science described might be received in the future and may receive guidance on what would be expected in a full proposal.


Proposals will be kept confidential as allowed by law, but will be available to PAC members, FRIB operations, and technical staff as needed.


Please contact the Manager for User Relations with any questions you may have.