KEKB (accelerator)

KEKB was located at the KEK (High Energy Accelerator Research Organisation) in Tsukuba, Ibaraki Prefecture, Japan.

The Belle experiments studied b-quark hadrons to research CP violation.

KEKB was called a B-factory for its copious production of B-mesons which provide a golden mode to study and measure the CP violation due to its property of decaying into other lighter mesons.

TRISTAN was the first site to confirm vacuum polarization around an electron[1] and operated at center-of-mass energies between 50 and 61.4 GeV.

KEKB's leading finite crossing angle interaction design provides its high luminosity.

A schematic of the KEKB accelerator complex.
A section of the KEKB accelerator. The left-hand ring (blue) is for electrons, and the right-hand ring (green) is for positrons.