SuperKEKB Shift Report

2026/4/21 (Tu) Day shift

KCG shift Shift leader KEKB MSC Linac shift Linac MSC BCG
H.SUGIMOTO K.MARUTSUKA Y.KURODA
H.TSUKAHARA
K.YOKOYAMA T.KUDO
K.SUZUKI
Chihhan Tseng

Shift Summary

recorded delivered
Peak luminosity 4.26 x 10 34 cm-2s-1
Integrated luminosity (shift) 426.1 pb-1 486.1 pb-1

LER HERBoth DR
Energy 3.979 GeV 6.970 GeV 10.523 GeV 1.1 GeV
Beam current 1601.3 mA 1202.2 mA 28.5 mA
No. bunches 2346 2346
Beta at IP 60 mm / 1 mm 60 mm / 1 mm
Crab Waist Ratio 80 % 60 %
Aborts 5 1 2

IP Knob Tuning

12:51 LER HER
r1 (mrad) -3.60 0.20
r2 (mm) -4.60 6.30
r3 (1/hm) 14.00 0.00
r4 (crad) 5.00 0.00
ηy (mm) -0.07 0.03
ηpy (mrad) -0.01 -13.99
waist (mm) 1.48 -1.20
chromatic r1 (mrad) 0.00 0.00
chromatic r2 (mm) 0.00 0.00
chromatic r3 (1/m) 0.00 0.00
chromatic r4 (rad) 0.00 0.00
created on 04/21/2026 16:01:10