ビーム性能の当初目標を達成したFRIB加速器

抄録

Facility for Rare Isotope Beams (FRIB) is based upon a driver linac to accelerate all stable isotope beams with a beam energy above 200 MeV/u and a beam power up to 400 kW. The linac has already delivered the beams meeting the Key Performance Parameter (KPP) of project completion defined by US Department of Energy (DOE). This article is focused on the beam commissioning results achieving this KPP and the beam study results beyond the KPP. The project team is now being engaged in completion of target systems including the beam dump, the pre-separator and experimental area reconfiguration. The project is thus on track for user runs scheduled early 2022. The beam power will be ramped up to the goal of 400 kW during the course of several years as J-PARC and SNS. Another focus of the project is to develop technologies for the power ramp up such as the liquid lithium charge stripper.