| Abstract Scope |
The FRIB facility is undergoing technical evaluations for higher power operation, receiving heavy ions in a range never seen before. Graphite is a material with a high melting point and low atomic number. Because of its excellent properties, graphite is used as a major component in high-temperature gas-cooled reactors and beam dump and other equipments in the accelerator field. Graphite can be used safely up to about 10-30 dpa, depending on the type of material. Many researchers are investigating the dimensional changes of turnaround point, as well as properties such as tensile strength, fracture probability, and the open and closed porosities. Based on these data, we are in the process of evaluating its applicability. In addition, in order to evaluate the effects of characteristics under heavy ion irradiation environments for application, we are in the process of organizing issues and planning preliminary ion irradiation tests. This study will be presented the evaluation for the applicability of graphite for charge selector over 50 kW, irradiation damage behavior and mechanism of nuclear grade graphite have been analyzed, and various properties under operating environmental conditions will be discussed for the applicability of the graphite.
[[Acknowledgements]: This work is 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, which is a DOE Office of Science User Facility under Award Number DE-SC0023633.] |