https://doi.org/10.1140/epjst/e2008-00797-4
RI beam facility project at RIKEN and physics programs
RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198,
Japan
Corresponding author: ueno@riken.jp
In the Radioactive-Isotope Beam Factory (RIBF) project in RIKEN,
intense primary beams can be provided at the energies E = 350–400 MeV
over the whole range of atomic number in the cascade-cyclotron
acceleration scheme, for which three cyclotrons, fRC, IRC, and SRC,
have been newly constructed. The project proceeds through two
phases. In the phase-I program, the superconducting in-flight
radioactive-isotope beam separator BigRIPS and the following
ZeroDegree spectrometer have been installed as well as the three cyclotrons. In the commissioning, after the successful extraction of a
beam from SRC at 
in the
cascade-acceleration scheme, radioactive-isotope beams were produced
and isotope-separated with BigRIPS as designed. The RIBF project is
fully capitalized in the phase-II program, in which the construction
of several experimental key devices has been proposed. The upgrade of
the former fragment separator RIPS is also included there. It allow
for a scheme to use intense primary beams at the intermediate energy
with RIPS. Remarkably, the produced
radioactive-isotope beams at this energy can be spin-polarized taking
the advantage of the fragmentation-induced spin orientation phenomena.
© EDP Sciences, Springer-Verlag, 2008
