Highlights_04

The two particle detectors BaBar and Belle, both detected broken symmetries. The results were exactly as Kobayashi and Masukawa had predicted almost three decades ealier. ― The Nobel Prize in Physics 2008

Highlights_02

Advances the understanding of the universe

Highlights_03

Unveils the mysteries of matter and life

Highlights_01

Accident of J-PARC Hadron Experimental Facility more

UPDATE

つくば(KEK)の放射線線量

Electrons and Positrons Collide for the first time in the SuperKEKB Accelerator

2018/04/26

Addendum to the KEK-ILC Action Plan

2018/04/24

The 7th TYL Science Camp for Japanese Female Students Held at KEK Tsukuba Campus

2018/04/23

COMET Experimental Group Successfully Extracts a Clean 8GeV Pulsed Proton Beam from J-PARC's 30GeV Main Ring to Hadron Experimental Facility

2018/04/19

【From Apr. 20th (Fri) 12:00】Let's keep an eye on the first collision of the SuperKEKB, the world's most-powerful accelerator !

2018/04/12

SuperKEKB accelerator kicks into new gear

2018/03/22

Israeli Ambassador to Japan Visits KEK Tsukuba Campus for Flag Raising Ceremony Commemorating Israel's Participation as 25th Member Nation of Belle II Experiment

2018/03/09

Satoshi Ozaki Memorial Symposium Announcement

2018/02/20

【Belle II】QCS Superconducting Magnets for Final Focusing of e-, e+ Beams Connected to Central Beam Pipes inside Belle II, Remote Vacuum Connection (RVC) Works Successfully

2018/01/26

2018 New Year's Address

2018/01/05

The Fifth KEK-TRIUMF Scientific Symposium held in Vancouver

2017/12/26

【Belle II Experiment】Preparation for Commissioning in Full Swing after Successful BEAST Detector Installation

2017/11/24

【BelleⅡ】The Test of the BEAST Detector System Started

2017/11/13

French Ambassador Visits KEK Tsukuba to Attend a Ceremony of Raising French National Flag, Commemorating 24th National Participation in BelleⅡ

2017/10/16

Study of ultrafast electron dynamics in twisted multilayer graphene using femtosecond photoemission electron microscopy

2017/10/11

Facility

J-PARC

Japan Proton Accelerator Complex (J-PARC) is a high-intensity proton accelerator …

Belle

Belle II

Belle II is an upgraded detector to allow the experiment to record the enormous numbers of particle …

Photon Factory

Photon Factory

The Photon Factory has two light source accelerators. The PF ring (2.5 GeV) has been operated since 1982.

ILC

ILC

ILC is a huge accelerator to be installed into the underground tunnel…

Research

The Neutrino Research

The Neutrino Research

The Neutrino Research at KEK focuses on the accelerator based …

B-factory

B-factory

Research on violations of the symmetry between particles and anti-particles …

LHC

LHC

What build our universe and how they are built are our long lasting puzzles.

KEK Theory Center

KEK Theory Center

The KEK Theory Center has 22 permanent faculties.

Study of rare K-meson decays

Study of rare K-meson decays

Due to interactions among quarks that …

ILC

ILC

It is planned to build a linear colliding accelerator to carry out experiments with …

Spintronics

Spintronics

The "giant magnetoresistance effect" that significantly advanced …

Surface

Soft matter

Soft matter, which is an aggregate of large, complex molecules, is used …

Structural biology

Structural biology

Membrane proteins perform important biological activities to …

Microbeam X-rays reveal the mechanisms of radiation biological responses at low doses of ionizing radiatio

X-rays

An X-ray microbeam irradiation system using …

CO2-free energy

CO2-free energy

The clear energies attract considerable attentions.

Enviroment

Earth and Planetary Science

The inside of the Earth is an extreme environment, with …

KEKB

SuperKEKB

SuperKEKB is the upgrade of KEKB to increase the luminosity 40 times, …

LINAC

LINAC

Two rings of SuperKEKB under construction, requires a beam of …

J-PARC

J-PARC

The most important feature of J-PARC accelerator is …

PF/PF-AR

PF/PF-AR

Bending the electrons which are accelerated to high energy, …

ERL

ERL

In order to observe the precise structure of …

ILC

ILC

ILC is a huge accelerator to be installed into the underground tunnel …

Radiation Physics

Radiation Physics

Radiation Physics Group conducts the studies on…

Radiation Shield

Radiation Shield

This group study on how long radiation reaches in…

　

Seamless Cavities

Environmental measurement group

The group contributes to the development of…

Geant4

Geant4

Geant4, Software toolkit to simulate…

Gravitational Wave

Numerical simulations of lattice gauge theories

QCD (quantum Chromodynamics) describes the…

Neutron Chopper

Neutron Chopper

教育

Sokendai

KEK set up the Graduate University for Advanced Studies, …

国際協力

InternationalCollaboration

The particle physics community is used to collaborating globally. As the objects studied get smaller and smaller, the accelerators grow in size, cost, and complexity, and the importance of international collaboration increases accordingly. …

What is KEK?

What is KEK?

Roadmap

Roadmap

History

History

Organization

Organization