last update, 17-Oct-2006
Two new snake magnets in AGS improved the proton polarization in RHIC, to above 60%..
Welcome to our home page. The Radiation Laboratory is one of the eldest research group in RIKEN. From 1st of April 06, we become a member of Nishina Center for Accelerator-Based Science, which is newly established in RIKEN to unify all the scientific activities using heavy-ions and proton accelerators, domestic and abroad. The major activity of Radiation Laboratory is to perform an experiment using high-energy polarized-proton collisions and heavy-ion collisions at BNL-RHIC, USA. We are also performing ion source developments and novel detector developments. We recently inherited activities on neutron optics and super conducting tunnel junction detectors from Image Information Research Unit in RIKEN.
| How the spin of proton is
3 quarks and gluons? This is a very fundament question in QCD,
Chromodynamic. The RHIC
Spin Project has been established to solve this problem by
two polarized protons for the first time in history.
Collisions of polarized protons are measured with the PHENIX detector at RHIC. Research program is organized in PHENIX Spin Physics Working Group.
Collaboration with accelerator group, theorists, and other RHIC experiments is the key for the success of the program. The RBRC experimental group is conducting RSC, Rhic Spin Collaboration.
| Analysis of the PHENIX data is performed at CCJ
with over 500 CPUs with 1 peta-byte storage. This CPU farm is combined
with new RIKEN super
cluster, and serves as the major analysis center for PHENIX.
|| Theory group in Radiation Laboratory is to study
aspects of physics at RHIC. The group is conducted by K. Yazaki,
close relation to the theoretical group in RBRC
Asymmetry Analysis Collaboration is compiling and modeling the world-wide data of the nucleon structure functions;
| While RHIC creates nuclear matter with high
of dense nuclear matter is being performed at KEK
using 12GeV Proton Cyclotron, by measuring
the decays of vector mesons in nucleus.
| At RHIC QGP, Quark Gluon Plasma, should be created by
two gold nuclei, through which we can study the state of early Universe
just after the Big Bang. Our recent discoveries are summarized in Nucl.
Phys. A757: 184-283, 2005 which announces "formation of a new state of
|| To enhance physics capability of PHENIX even further,
Detector Upgrade R&D is on going through the collaboration with BNL
instrumentation division, CERN-ALICE and CERN-NA60.
|| Laser induced plasma ion source has been developed,
the world highest intensity of carbon and aluminum beam. This
is so compact and can be useful for cancer therapy.
|| By combining novel methods for neutron
optics with super conducting tunnel-junction detector, we aim to
precise measurements for neutron decays. Applications go also to
interference and neutron scattering.
Old member list(2004)
Old member list(2003)
People Left from Radiation Lab.