Sep 20 – 24, 2021
America/Vancouver timezone

nuCARIBU: An Upgrade for the CARIBU Facility at the Argonne Tandem Linac Accelerator System

Not scheduled
Poster Radioactive ion beams, charge breeders and polarized beams Poster Session 1


Jake McLain (Argonne National Laboratory)


The Californium Rare Isotope Breeder Upgrade (CARIBU) facility is changing the mechanism for creating neutron-rich fission products. Spontaneous fission from a $^{252}$Cf source has provided beams to support the low energy and accelerated-beams ATLAS programs. $^{252}$Cf has a 2.65-year half-life, requiring the source to be replaced every three years to maintain high beam intensities. Fabricating an appropriately thin $^{252}$Cf source to efficiently release the fission products has been challenging. The solution to these problems is nuCARIBU, a new system that provides neutron-induced fission on actinide foils. The Best Cyclotron B6P System (6-MeV proton beam at 0.5 mA) is chosen, utilizing a multi-cusp negative ion source extracting into a cyclotron, which uses carbon foils to strip the H$^-$ ions to protons. These protons are delivered to a $^{7}$Li target to produce neutrons. The fast neutrons are moderated to thermal energies to induce fission in an actinide foil, providing neutron-rich fission products.

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Funding Information This work was supported by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357. This research used resources of ANL’s ATLAS facility, which is a DOE Office of Science User Facility.

Primary author

Jake McLain (Argonne National Laboratory)


Clayton Dickerson (Argonne National Lab) Guy Savard (Argonne National Laboratory) Jeongseog Song (Argonne National Laboratory) Jerry Nolen (Argonne National Laboratory) John Greene (Argonne National Laboratory) Matt Gott (Argonne National Laboratory) Richard Vondrasek (Argonne National Laboratory)

Presentation materials