Optimization of a mini-channel beam dump for FRIB operation

The Facility for Rare Isotope Beams (FRIB) is a high-power heavy ion accelerator facility at Michigan State University that completed in 2022. Its driver linac is designed to accelerate all stable ions to energies above 200 MeV/u with beam power of up to 400 kW. Currently, FRIB is operating between 10 to 20 kW, delivering multiple primary beam species. The beam dump absorbs approximately 75% of the primary beam power. The existing beam dump head can accommodate up to 20 kW operation, with a planned transition to an optimized mini-channel beam dump design with capability up to 30 kW and beyond. Presented here is an overview of the mini-channel beam dump head design optimization and supporting analysis.