Accelerator Lab

The Accelerator Laboratory is responsible for the design, construction and operation of leading-edge particle accelerators, which form the foundation of all scientific research carried out at KEK. Research activities encompass large-scale accelerators used in collaborative experiments, as well as specialized accelerator development. For details, please visit the Accelerator Laboratory home page.



Director : Tadashi Koseki
Div.HeadAccelerator Div. I : Susumu Igarashi
Div.HeadAccelerator Div. II : Hideaki  Hotchi
Div.HeadAccelerator Div. III : Yusuke Suetsugu
Div.HeadAccelerator Div. IV : Makoto Tobiyama
Div.HeadAccelerator Div. V : Kazuro Furukawa
Div.HeadAccelerator Div. VI : Yukinori Kobayashi

Head, Center for Applied Superconducting Accelerator

: Shinichiro Michizono


Office :   Tel +81-29-864-5205 Fax +81-29-864-3182

Research Groups

Electoron-Positron Injector Linac

B Factory (KEKB)
Japan Proton Accelerator Research Complex (J-PARC)
ILC Accelerator Development (ILC)
Proton Synchrotron (12-GeV PS)
(Decommissioned 3/31/2006)
Lightsources (PF, PF-AR)


Accelerator Test Facility (ATF)
Accelerator Theory Group
Electrostatic Storage Ring (ESRING)
(in Japanese)
Super-bunch (in Japanese)
ERL Project (in Japanese)

Table-Top Proton Synchrotron (TTPS)
Low-impedance cavity collaboration


Graduate Schools

Graduate Univ. for Advanced Studies:
Dept. of Accelerator Science