Jeff K, Darkhan T,

Overview

CAL-CS synchronized oscillator settings for cal. line coherence calculations were lost after the recent power glitch (LHO alog 29592). The settings were lost because after populating the settings (see LHO alog 28995) on August 10, not all of the channels were monitored by SDF_OVERVIEW.

Today we restored the coherence calculation settings and accepted the changes in SDF_OVERVIEW.

Details

The power glitch did not cause losses of the H1CALCS filters, so running set_coherence_h1.py (that populates filter modules) was not necessary this time (only changes names of the "1/f^2" filters to ":1,1", same as in PCAL models).

However filter module switches needed to be turned on (those previously weren't monitored by SDF_OVERIVEW). Some of the synchronized oscillator settings were also lost during the power glitch, they have been fixed now.

Today we updated coherence calculation settings for the following lines:

•   35.9 Hz - ESD, SUS_LINE1
•   36.7 Hz - PCALY_LINE1
•   37.3 Hz - DARM_LINE1
•  331.9 Hz - PCALY_LINE2
• 1083.7 Hz - PCALY_LINE3

All channels have been added to the list of monitored channels and the values have been accepted in SDF_OVERVIEW tables (safe.snap and OBSERVE.snap).

Note: IFO was not locked when the screenshots were taken.