Speaker
Description
The Facility for Rare Isotope Beams (FRIB) is a U.S. Department of Energy (DOE) Office of Science user facility for rare isotope research supporting the mission of the Office of Nuclear Physics. FRIB houses a continuous wave superconducting radiofrequency (SRF) linear accelerator to accelerate all ions with atomic numbers 1 through 92 to energies of 200 MeV/u or higher. FRIB currently operates at a beam power of 20 kW, steadily ramping up toward the goal of 400 kW. Like any other high-intensity heavy-ion accelerators, FRIB faces technical challenges in the beam intercepting devices that originate from the extremely high energy loss per distance travelled by heavy ions traversing the materials. The challenges are twofold: extremely high thermal density (~60 kW/cm3 [1]) and radiation damage rate (~1000 dpa/day [2]), which require unique solutions in beam intercepting devices. In this paper, the challenges faced by FRIB beam intercepting devices for power ramp up to 400 kW and our approach to address them are discussed.
[1] T. Kanemura et al., Phys. Rev. Lett., vol. 128, p. 212301, May. 2022.
[2] T. Kanemura et al., in Proc. HIAT’25, East Lansing, USA, June 2025, paper MOZ03, p. 20-25.
This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics and used resources of the Facility for Rare Isotope Beams (FRIB) Operations, which is a DOE Office of Science User Facility under Award Number DE-SC0023633.