Updated on October 1, 2025

How to visit and do reserach work at SuperKEKB

Operation Log

• 2026ab Plots

• 2026a Operation Log

Past Operation History

• 2025c Plots / 2025c Operation Log

• 2024c Plots / 2024c Operation Log

• 2024ab Plots / 2024a Operation Log / 2024b Operation log

• 2022ab Plots

• 2019-2025 Plots

Records

• Peak luminosity 5.1 x10³⁴ (cm^-2s^-1), Dec. 27, Owl, 2024
• Belle II HV OFF

Parameter	LER	HER	Unit
Beam Current	1632	1259	mA
Number of Bunches	2346
Bunch Current	0.696	0.537	mA
Beam-Beam Parameter ξy	0.036	0.027
Σy*	0.375		μm
σy*	0.265		μm
Tunes (x/y)	44.525 / 46.589	45.531 / 43.599
Specific Luminosity (x1031)	5.8		cm-2s-1/mA2
Luminosity (x1034)	5.1		cm-2s-1

• Peak luminosity 4.65 x10³⁴ (cm^-2s^-1), June 8, Swing, 2022
• Belle II HV ON

Parameter	LER	HER	Unit
Beam Current	1321	1099	mA
Number of Bunches	2249
Bunch Current	0.587	0.489	mA
Beam-Beam Parameter ξy	0.041	0.028
Σy*	0.303		μm
σy*	0.215		μm
Tunes (x/y)	44.525 / 46.589	45.532 / 43.573
Specific Luminosity (x1031)	7.2		cm-2s-1/mA2
Luminosity (x1034)	4.7		cm-2s-1

Integrated Luminosity	Recorded	Date	Delivered	Date
Shift (pb-1)	1042.5	February 25, Owl, 2026	1134.4	February 25, Owl, 2026
1 days (fb-1)	2.873	March 8, 2026	3.346	March 8, 2026
7 days (fb-1)	15.334	February 19 - February 25, 2026	17.515	February 19 - February 25, 2026

Manual

• Optics Loader
• BPM Gain Mapping
• How to use Optics Library