SuperKEKB Project

The SuperKEKB project is our response to the challenge of solving Nature’s fundamental puzzles by upgrading the KEKB electron-positron collider and the Belle detector. The KEKB accelerator and the Belle detector demonstrated the violation of CP asymmetry proposed by Dr. Makoto Kobayashi and Dr. Toshihide Maskawa, who received the 2008 Nobel Prize in Physics. The KEKB collider has been a leader in the race to provide the world’s highest luminosity. The next target is 40 times greater than KEKB’s record by the upgrade to SuperKEKB and Belle II. The target luminosity is 8×1035 cm-2s-1 and this improvement allows us to discover new physics beyond the Standard Model.

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Damping Ring (Injection part)
Damping Ring
Damping Ring (Extraction part)
Damping Ring (extraction part)
Stripline-type transverse feedback kicker (vacuum side)
Overdamped-type longitudinal feedback kickers
Transverse feedback kicker (air side)
Gated turn-by-turn position monitors
Quadrupole Magnet
Sextupole Magnet and Gap Sensor to measure bpm block
Skew Sextupole Magnet
ARES (Normal Conducting Cavity)
ARES (Normal Conducting Cavity)
Superconducting Cavity
IR Construction
IR Construction
IR Construction
IR Construction
Belle II & QCS
Belle II and QCS
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Machine Parameters

Luminosity History

Final Design Parameters