Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268


Thu., November 05, 2015, at 11:00 AM - 12:00 Noon, refreshments served at 10:40 AM

Present Status of and Plans of Radioactive Isotope Beam Facility (RIBF)

Hiroyoshi Sakurai, RIBF, RIKEN Radiation Laboratory, Tokyo-Wako Japan
ORNL, Bldg. 4500N, Weinberg Auditorium, Rm I126

The Radioactive Isotope Beam Factory (RIBF) at RIKEN is a world-premiere heavy-ion accelerator facility to investigate shell evolution, nucleon-correlations, the r-process path and equation-of state of asymmetric nuclear matter. Intense and fast radioactive isotope beams have been delivered since 2007, and emergence of new phenomena in exotic nuclei have been observed.

To access nuclei far from the stability line, especially neutron- rich nuclei, the RIBF facility is highly optimized for inflight production of fission fragments via a U238 beam. Super-conducting Ring Cyclotron (SRC), in the accelerator complex delivers a 345-MeV/u U beam. The U nuclide is converted at a target to fission fragments. An inflight separator BigRIPS was designed to collect about 50% of fission fragments produced at the target and separate nuclei of interest. The RI beams produced at BigRIPS are then delivered to several experimental devices; three spectrometers, a storage ring for mass measurement and a gas-catcher system.

In this talk, I would give a facility overview and status of RIBF, and introduce the current and future programs and recent highlights, including the studies of super heavy elements. A new program related to the nuclear waste problem would be introduced, too. I would discuss an intensity upgrade plan of the RIBF facility.

Contact: Alfredo Galindo-Uribarri, (865) 574-6124