john.oh@LIGO.ORG - posted 03:56, Friday 27 January 2017 (33671)
DQ Shift Report for 23-25 January
- Overall duty cycle: 72.14 % (3 days)
-
Inspiral range around 65-70Mpc - range.
- Degradation in inspiral range (by ~5-10Mpc) coincides with noise excess in 50-200Hz appearing in the spectrogram for which the reason is unclear.
- It could be correlated with rubbing optics, but degradation of inspiral range is less severe than typical rubbing and the frequency band of the noise is narrower than by typical rubbing.
- But still there exists similarity between the rubbing effect and the noise excess.
- Hveto vetoed mostly low-frequency glitches (≲10Hz), but not in higher frequency range.
- Typical range decrease from 13:00 UTC due to anthropogenic ground motion at Hanford
- Detailed report shown here : DQShiftLHO20170123
- Shifter: J. Oh / S. H. Oh