RIKEN RI beam factory project - present status and perspectives

RIBF is the world-class radioactive-isotope beam (RIB) facility, which is based on a new high-power heavy-ion accelerator complex and a new in-flight fragment separator BigRIPS. In 2007, RIBF started to deliver radioactive isotope beams. High performances and potentialities of this facility have been demonstrated by discovery of two new isotopes. The accelerator system has been upgraded since 2007. Additional beam monitors have been installed to strengthen a beam diagnostic and to improve a transmission-efficiency. Last year maximum intensities achieved for 48Ca and 238U beams at 345 A MeV were 175 pnA and 0.3 pnA, respectively. To have more intense beams of Xe/U, intensive efforts have been made in developing charge strippers as well as a new 28 GHz SC-ECRIS. A new injector linac is being constructed to be in operation JFY 2010. Combination of the SC-ECRIS and the new linac will make the U beam intensity greater than 50 pnA. An rf ion-guide gas-catcher system SLOWRI, Rare-RI Ring dedicated for mass measurement, IRC-to-RIPS BT line for multi-use capability are to be funded in near future