About FRIB
FRIB allows scientists to explore the properties of rare isotopes, advancing our understanding of nuclear physics, nuclear astrophysics, fundamental forces, and practical applications that benefit society. FRIB has leveraged past assets developed at MSU, utilizing the gained knowledge of past excellence, to build new assets and look to the future.
FRIB is a one-of-a-kind facility that uses the next-generation technology needed for next-generation rare isotope experiments. The foundation for this vision—now implemented in FRIB—is to use fast, stopped, and reaccelerated rare isotope beams produced by fragmentation to yield consistently high intensities of beams in minimal beam development times.
Building on a foundation of excellence
FRIB is a complex, interdisciplinary enterprise that requires the expertise, aspirations, and resources of a host of collaborators.
FRIB’s origin and ongoing operation rely on a strong partnership between the U.S. Department of Energy Office of Science (DOE-SC), MSU, and national laboratories—all committed to fundamental research into the properties of atomic nuclei, particularly rare isotopes.
FRIB also enjoys a strong partnership with its user community. FRIB users—researchers from universities, industries, federal laboratories, and nonprofits from around the world—provide expert guidance to the FRIB Laboratory team in the identification of opportunities and planning of experiments, and they play a crucial role in sharing the newly generated knowledge. From these partnerships radiate the networks of scientists and knowledge that fulfill the promise to deliver discoveries, develop applications for society, and educate the next generation of nuclear scientists who will advance the benefits of rare isotope science for generations to come.
History of FRIB

Since the early 1990s, nuclear physicists had been discussing the need for a facility to produce intense beams of rare isotopes. A Nuclear Science Advisory Committee (NSAC) taskforce presented its recommendations on how to proceed to the National Science Foundation (NSF) and DOE in 1999. It closely reflected a plan for rare isotope beam production proposed by MSU. The National Superconducting Cyclotron Laboratory (NSCL) leadership and scientists saw this as their next opportunity and immediately began developing detailed design plans. By year’s end, they made a presentation to NSF and DOE on the benefits of siting the new facility at MSU, which included a proposal for in-flight fragmentation. After a rigorous competition, DOE-SC awarded the project to MSU in 2008.
The partnership to create, build, and operate FRIB has delivered a world-unique DOE-SC user facility that ensures the nation’s continued competitiveness in nuclear science through provision of unprecedented discovery potential. FRIB was technically completed in January 2022, on budget and ahead of the planned project completion (Critical Decision 4) in June 2022. User experiments commenced 9 May 2022. FRIB hosts scientists who conduct experiments, extend the frontier of nuclear science, and help define the next frontier and the next reinvention needed to reach and transcend it.
Since 2020, the DOE Isotope Program has provided $13.2M for FRIB’s isotope harvesting project, covering base operations and core research. The project was completed in December 2024.
In 2022, FRIB opened the FRIB Single Event Effects (FSEE) Facility, which uses energetic and penetrating heavy ion beams to measure the response of electronic components to such ions.
DOE-SC awarded a cooperative agreement to establish and operate the High Rigidity Spectrometer (HRS) at FRIB in 2023. HRS will have a significant benefit for FRIB’s scientific program, extending the scientific reach to neutron-rich isotopes by a combined production-rate and luminosity increase of up to a factor of more than 100.
In 2023, the federal government awarded $14M to MSU to establish the K500 Chip Testing Facility at FRIB, which supports the refurbishment of the world’s first superconducting cyclotron—built at MSU in the 1980s— into a heavy-ion chip testing facility. In June 2024, the MSU Board of Trustees authorized construction of a highbay addition to the K500 Chip Testing Facility. The facility is scheduled for completion in 2025.
MSU history of nuclear physics
The development of MSU’s prowess in nuclear physics began when MSU President John A. Hannah seized upon the idea that developing a major program in physics could be a cornerstone of his strategy for growth and diversification of the university. In 1958, Henry Blosser came to MSU to build a uniquely powerful cyclotron. Blosser assembled a remarkable team, and together they succeeded in designing, building, and funding MSU’s first cyclotron, the K50, completed in 1965 and used for nuclear physics research with proton beams.
This launched a tradition not only of academic excellence in nuclear physics but of visionary anticipation and response to the quickly advancing frontiers of nuclear science. While 1965-1979 was the K50 era at MSU, by 1973 Blosser and his team were already envisioning what would be required next. They soon began working on acquiring funding, designing, and preparing to build a superconducting magnet, which was the cornerstone for the next generation cyclotron, the K500. Funded by NSF, completion of the K500 in 1982 initiated the superconducting cyclotron era, and the MSU Cyclotron Laboratory became a national user facility for research with heavy ions.
Long before the K500 was complete, the team was planning the next generation, a coupled superconducting cyclotron system which would add a K1200 post-accelerator to the K500. Their proposal was selected in 1978 by the newly created NSAC to NSF and DOE for development as NSCL. The K1200 was completed in 1988 and by 1990 was operating with the A1200 fragment separator to produce beams of rare isotopes through inflight fragmentation of heavy-ion beams. Plans were already in motion that led in 2001 to the coupled cyclotron facility with the A1900 fragment separator—the most powerful rare isotope facility.
NSCL operated as an NSF user facility for four decades. In May 2022, the final NSCL experiment was completed, nearly 40 years after the first NSCL experiment in September 1982.
MSU’s international standings
MSU is a member of the Association of American Universities, an organization of 71 American research universities; ranks 24th among public universities in the 2023 Forbes “America’s Top Colleges” ranking; ranks 28th among public universities and 60th overall out of nearly 1,500 United States colleges and universities in the 2024 U.S. News & World Report "Best National Universities" ranking; ranks 116th out of nearly 1,800 universities in the world in the Times Higher Education World University Rankings 2024; and ranks 116th out of 2,000 universities in the 2023 U.S. News & World Report "Best Global Universities" ranking. MSU’s nuclear physics graduate program is a top-ranked program nationally, according to U.S. News & World Report.
“Especially critical are experiments with rare isotope beams. . . . Yet, the field is still in its infancy and limited by no access to the rarest isotopes. . . . To address this limitation [requires] a next-generation Facility for Rare Isotope Beams (FRIB), which will deliver the highest intensity beams of rare isotopes available anywhere.”
Excerpt from Frontiers of Nuclear Science
- K50 (cyclotron for protons)
- Superconducting magnet
- K500 (superconducting cyclotron for heavy ions)
- K1200 (superconducting cyclotron for heavy ions)
- A1200 beams (in-flight separated rare isotopes)
- Coupled cyclotron facility (world’s most powerful rare isotope facility until 2007
- LEBIT – Low Energy Beam and Ion Trap (stopped rare isotopes)
- ReA3 (reaccelerated rare isotopes)
- ReA6 (reaccelerated rare isotopes)
- FRIB Single Event Facility (chip testing)
- FRIB (fast, stopped, reaccelerated rare isotopes)
- Isotope harvesting program (extra, unused isotopes for research)
During the planning of FRIB, thorough attention was paid to the environmental effects of its construction and operation on MSU’s campus.