Updated on October 1

Schedule

Maintenance

Past Operation History

• 2024c Plots

  • 2024c Schedule

• 2024ab Plots

  • 2024a Weekly Schedule

  • 2024b Weekly Schedule

• 2022ab Plots

• PY2021 Plots

• 2019-2024 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)	958.1	April 24, Swing, 2022	1035.9	April 22, Swing, 2022
1 days (fb-1)	2.503	April 22, 2022	2.912	June 11, 2022
7 days (fb-1)	15.001	April 18 - April 24, 2022	16.599	April 18 - April 24, 2022

• Optics File