Radiation Labratory

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Radiation Laboratory You are visitor #[an error occurred while processing this directive] since 15 Feb. 2000

Location	Room 254/256, in the Main Research Building at RIKEN, Wako
Address	Radiation Lab, 2-1 Hirosawa, Wako, Saitama, Japan
Telephone	+81-48-467-9345
`Fax`	+81-48-462-4641

PHENIX Muon Arm: newly
installed for Spin Physics

Welcome to our home page. The Radiation Laboratory is one of the eldest research group in RIKEN. We have started a new experiment using polarized proton collision at RHIC, the RHIC Spin Project at BNL, USA.

News
Archive

* Starting RUN3 of RHIC, p+p with more than 40% polarization
*Press Release of the first collisions of polarized protons (Japan, USA)

Our Activities

How the spin of proton is formed with 3 quarks and gluons? This is a very fundament question in QCD, Quantum Chromodynamic. The RHIC Spin Project has bean established to solve this problem by colliding two polarized protons for the first time in history, and extended the physics capability of RHIC, Relativistic Heavy Ion Collider at Brookhaven National Laboratory, BNL. At RHIC QGP, Quark Gluon Plasma, will be created by colliding two gold nuclei, through which we can study the state of early Universe just after the Big Bang. RIKEN Brookhaven Research Center, RBRC, was founded to carry out these research programs.

*Spin Physics at BNL*	*Spin Physics at Wako*	*Other Domestic Activities*	*Theory*
Collisions of polarized protons and heavy ions are measured with PHENIX detector at RHIC. Research program is organized in PHENIX Spin Physics Working Group. Our activity at BNL can be find here.	Analysis of the PHENIX data is performed at CCJ with over 300 CPUs with 100 TB storage. This CPU farm serves as the major simulation center for PHENIX and the analysis center for domestic collaborators.	Our domestic activity is carried out using RIKEN Accelerator Research Facility (RARF), studying the properties of nuclear isotopes far from the stable liｎe, and their relations to astrophysics, another missing ring in the early Universe. Planning for the new RIB factory (RIBF) is on going.	Recently a theory group is formed in Radiation Laboratory to study theoretical aspects of physics at RHIC. The group is conducted by K. Yazaki and T. Matsui, keeping close relation to the theoretical group in RBRC
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.	To enhance physics capability of PHENIX even further, PHENIX Detector Upgrade R&D is on going through the collaboration with BNL instrumentation division, CERN-ALICE and CERN-NA60.	While RHIC creates nuclear matter with high temperature, study of dense nuclear matter is being performed at KEK using 12GeV Proton Cyclotron, by measuring the decays of vector mesons in nucleus.	To miximize the impact from the RHIC spin project, We are compiling and modeling the world-wide data of the nucleon structure functions; Asymmetry Analysis Collaboration.

Members (April 2003)
bold letters are recent additions

People Left from Radiation Lab.

Ｒａｄｉａｔｉｏｎ　Ｌａｂｏｒａｔｏｒｙ　

Experiment
Name Other
Affiliations Activity @

Chief Scientist Hideto Enyo RBRC PHENIX,CCJ,KEK W

Vice Chief Scientist Takashi Ichihara RBRC,Motobayashi-Lab PHENIX,CCJ,RIB W

Scientist Yasushi Watanabe RBRC PHENIX,CCJ,RIB W

Atsushi Taketani RBRC PHENIX B

Kiyoshi Tanida (RBRC) PHENIX W

Yoshie Ohtake Ebisuzaki-Lab Neutron Optics W

Masanori Okamura Katayama-Lab RHIC B

Yuji Goto RBRC PHENIX B

Yasuyuki Akiba (RBRC) PHENIX B

Collaborating Scientist Naohito Saito Kyoto-U, RBRC PHENIX

Kazuyoshi Kurita Rikkyo-U,RBRC PHENIX

Manobu Tanaka KEK ALICE

Takeo Kawasaki Niigata-U ALICE

Hiroki Sato Kyoto-U.JSPSfellow PHENIX

Special Postdoctoral Fellow Junji Tojo PHENIX W

Ryotaro Muto KEK-E325 W

Contract Researcher Hiroaki Ohnishi CERN visitor PHENIX,NA60 C

Akio Kiyomichi PHENIX W

Kazumi Hasuko PHENIX,BELLE W

Johann Heuser CERN Visitor PHENIX,NA60 C

Satoshi Yokkaichi RBRC PHENIX,CCJ W

Hiroyuki Kano CERN Visitor ALICE C

Senior Contract Researcher Vladimir Rykov PHENIX W

Senior Visiting Scientist Shoji Nagamiya KEK PHENIX

Ken Imai Kyoto-U PHENIX

ToshiAki Shibata TITech PHENIX

Yasuyuki Gono Kyusyu-U RIB

Students Nobuyuki Kamihara TITech,JRA2 PHENIX B

Megumi Naruki Kyoto-U KEK-E325 W

Fuminori Sakuma Kyoto-U,JRA2 KEK-E325 W

Manabu Togawa Kyoto-U, JRA2,RBRC PHENIX B

Hiromi Okada Kyoto-U,JRA2 PHENIX

Yoshinori Fukao Kyoto-U,JRA,RBRC PHENIX B

Takuma Horaguchi TITech,JRA,RBRC PHENIX B

Takashi Hachiya Hiroshima-U,JRA2 PHENIX

Theory
Name Other Affiliation @

Senior Visiting Researcher Koichi Yazaki T.W.U W

Tetsuo Matsui U-Tokyo

Contract Researcher Masanori Hirai W

Noriyoshi Ishii W

Kazutaka Sudo W

Munehisa Ohtani W

Students Yoshitaka Hatta Kyoto-U, JRA, RBRC B

Hiroshi Yokoya Hiroshima-U. JRA, RBRC B

Secretaries
Noriko Kiyama

Michiko Muroi

Karen Sakuma

ＲＩＫＥＮ－ＢＮＬ　Ｒｅｓｅａｒｃｈ　Ｃｅｎｔｅｒ

Directors
Name Other
Affiliation @

Center Director T.D. Lee Columbia U. B

Deputy Director Nick Samios BNL B

Associate Director Hideto Enyo Radiation Lab W

Experiment
Name Other
Affiliation

Group reader Hideto En'yo RIKEN

Deputy Group Reader Gerry Bunce BNL

RHIC Fellow Matthias G. Perdekamp U-Illiois

Douglas E. Fields New Mexico U.

Fellow Abhay L. Deshpande

Brendan FOX

Research Associate Masashi Kaneta

Kensuke Okada

Osamu Jinnouchi

RIKEN Special Postdoctoral Fellow Hideyuki Kobayashi

Hisayuki Torii

Tsuguchika Tabaru

Visiting Scientist Kazu Kurita Rikkyo -U

Naohito Saito Kyoto-U

Hiroyoshi Hiejima U-Illiois

Collaborating Scientist Akio Ogawa BNL

Soeren Lange Frankfurt U.

Zheng Li BNL

Alexander Bazilevsky BNL

RBRC Young Researcher Viktor Siegle Heiderberg U.

Kazuya Aoki Kyoto U.

Theory ( Japanese )
Other Non-Japanese members can be find here
Name Other
Affiliation

Group Leader T.D. Lee Columbia U.

Deputy Group Leader Anthony Baltz BNL

RHIC Physics Fellow Taku Izubuchi Kanazawa-U

Research Associate Jun-Ichi Noaki

Kazunori Itakura

Yasumichi Aoki

Yukio Nemoto

Norikazu Yamada

RIKEN Special Postdoctoral Fellow Takanori Sugihara

Takashi Ikeda

Tetsufumi Hirano

Visiting Scientist Shigemi Ohta KEK

Administration, Secretary
Office at RBRC Chiharu Shimoyamada

Rae Greenberg

Pam Esposito

Taeko Itoh

Tammy A. Heinz

Office at Wako Motohide Yokota

Seiko Asaka

Yumiko. Haga