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Reports until 09:59, Monday 12 June 2017
H1 DetChar (DetChar)
borja.sorazu@LIGO.ORG - posted 09:59, Monday 12 June 2017 (36804)
DQ Shift: Thursday 8th June 00:00 - Sunday 11th June 23:59 (UTC)

Summary of the DQ shift from Thursday 8th June to Sunday 11th June (inclusive), click here for full report:

* Very good start to the post-commissioning break with a single lock that extended the whole weekend and duty cycles of 19% (thursday), 72% (friday), 97% (saturday) and 100% (sunday) for the period of this DQ shift.

* Range sensitivity stable averaging around 64 Mpc.

* Not an eventful DQ shift, despite some strong winds and Earthquakes in Mexico. However notice that the only lockloss of Friday lasted 3:30 hours and for a long time LHO had trouble progressing beyond DRMI, dropping out of lock widly (AS camera spot swings wildly and AS90_OVER_POP90 channel has huge values). This required running and INITIAL ALIGNMENT which had issues for a while until LHO realised that this was the first initial alignment run since changes on Wed evening, when the green PZT pointing and green ITM camera setpoints were reset. This changes were undone for both arms. Things worked better after this.

* Interesting PyCBC live glitches on Friday (one Koi fish and another of the type previously identified as related to radiation pressure) and Saturday (blip/chirp? glitch suggested as maybe being related to computer issues).

* On Saturday highest SNR Omicron glitches correlates with scattering of H1:SUS-PRM_M1_DAMP_L and H1:SUS-SRM_M1_DAMP_L, caused by Earthquake in Mexico.

* On Saturday very short consecutive drop outs of Observe mode due to TCS ITMx laser losing lock.

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