The attached plot shows the elapsed time of the 3 EtherCAT systems over the past 65 days. The start time is indicated about 64 days ago and no software change has been applied since then. We can see that both the corner and EX were up the entire time, wheres EY had a single downtime, when a hardware failure prompted the repalcement of a terminal. The computers and software caused no downtime.

16:30UTC

I did a short test of connecting to a large number of channels with the test conlog server (conlog-test-master):

15:08 UTC started connecting to 95462 channels
15:12 UTC added connections to 2 more channels
15:27:06 UTC stopped server

The attached plot shows the history of the controls signal over the past 24 hours. There was a step down about 12h ago in the control signals followed by a return to the old value about 6h ago.Some of the glitches were also seen in the 45MHz unit set up in the CER (shown in the 9MHz channel).

15:00UTC

TITLE: Oct 8 DAY Shift 15:00-23:00UTC (08:00-04:00 PDT), all times posted in UTC

STATE Of H1: Observing

OUTGOING OPERATOR: Patrick

QUICK SUMMARY:IFO in Observation mode ~78 Mpc. All lights in LVEA, PSL and M/E stations are off. Wind is ≤10mph. EQ sie plot is nominal. Microseism plot is steady at around .25microns/s. Patrick reported RF45 acted up a bit during his shift. IFO taken to commissioning for today’s activities

TITLE: 10/08 [OWL Shift]: 07:00-15:00 UTC (00:00-08:00 PDT), all times posted in UTC
STATE Of H1: Locked. Observing @ ~75 MPc.
SHIFT SUMMARY: Locked and observing entire shift. RF45 noise appeared to come back and subside again around 09:30 UTC. Multiple SUS ETMY saturations.
INCOMING OPERATOR: Ed
ACTIVITY LOG:

12:24 - 12:31 UTC Stepped out of control room

SUS E_T_M_Y saturating (Oct 8 07:01:29 UTC)
SUS E_T_M_Y saturating (Oct 8 07:29:17 UTC)
SUS E_T_M_Y saturating (Oct 8 07:49:59 UTC)
SUS E_T_M_Y saturating (Oct 8 08:06:32 UTC)
SUS E_T_M_Y saturating (Oct 8 09:20:57 UTC)
SUS E_T_M_Y saturating (Oct 8 09:48:58 UTC)
SUS E_T_M_Y saturating (Oct 8 10:26:45 UTC)
SUS E_T_M_Y saturating (Oct 8 10:37:34 UTC)
SUS E_T_M_Y saturating (Oct 8 10:37:37 UTC)
SUS E_T_M_Y saturating (Oct 8 10:37:39 UTC)
SUS E_T_M_Y saturating (Oct 8 11:50:20 UTC)
SUS E_T_M_Y saturating (Oct 8 12:28:17 UTC)
SUS E_T_M_Y saturating (Oct 8 13:06:51 UTC)
SUS E_T_M_Y saturating (Oct 8 14:28:34 UTC)

Have remained locked and observing @ ~78 MPc. RF45 noise appeared to come back and subside again around 09:30 UTC. Multiple SUS ETMY saturations.

07:58 - 08:04 UTC Stepped out of control room

SUS E_T_M_Y saturating (Oct 8 07:01:29 UTC)
SUS E_T_M_Y saturating (Oct 8 07:29:17 UTC)
SUS E_T_M_Y saturating (Oct 8 07:49:59 UTC)
SUS E_T_M_Y saturating (Oct 8 08:06:32 UTC)
SUS E_T_M_Y saturating (Oct 8 09:20:57 UTC)
SUS E_T_M_Y saturating (Oct 8 09:48:58 UTC)
SUS E_T_M_Y saturating (Oct 8 10:26:45 UTC)
SUS E_T_M_Y saturating (Oct 8 10:37:34 UTC)
SUS E_T_M_Y saturating (Oct 8 10:37:37 UTC)
SUS E_T_M_Y saturating (Oct 8 10:37:39 UTC)

I just very clearly saw the RF45 amplitude and coherence jump up on the wall monitor with this SUS ETMY saturation.

SUS E_T_M_Y saturating (Oct 8 09:20:57 UTC)

TITLE: 10/08 [OWL Shift]: 07:00-15:00 UTC (00:00-08:00 PDT), all times posted in UTC
STATE Of H1: Observing @ ~ 74 MPc.
OUTGOING OPERATOR: Nutsinee
QUICK SUMMARY: From the cameras the lights are off in the LVEA, PSL enclosure, end X, end Y and mid X. I can not tell if they are off at mid Y. Seismic in 0.03 - 0.1 Hz band is around .015 um/s. Seismic in 0.1 - 0.3 Hz band is around .15 um/s. Winds are less than 5 mph.

TITLE: "10/07 [EVE Shift]: 23:00-07:00UTC (16:00-00:00 PDT), all times posted in UTC"

STATE Of H1: Observing at ~80 Mpc for the past hour

SUPPORT: Sheila

SHIFT SUMMARY: Recovered from the lockloss didn't go so smoothly, but we made it in time for the GRB alert (refer to Sheila's alog 22321, 22322, and 22323). We also did an initial alignment.

INCOMING OPERATOR: Patrick

ACTIVITY LOG:

01:26 Switched to Commissioning so Chris can test PCalX CBC and Detchar injection (WP5530). LLO was down.

01:43 Chris done. Back to Observing.

01:44 Shelia wanted to do ETMX ISI excitation. Back to Commissioning (WP5528).

02:05 Sheila done. Back to Observing.

02:08 Robert wanted to do some injection in the vertex area between the arms (outside. not in LVEA). Back to Commissioning.

02:40 Robert done. Back to Observing.

02:48 Lockloss

05:49 Locked and Observing.

05:58 GRB Alert (E190744)

Sheila, Nutsinee

After we got passed all the problems Sheila mentioned earlier, we are still trying to acquire lock. Ifo lost lock at SWITCH_TO_QPDS twice in a row.

Nutsinee started an inital alingment as part of recovering from the last lockloss.  The INPUT align WFS loops failed for an unknown reason, and caused the X arm to drop lock with out offloading the WFS.  At this point we noticed that the history in the suspension filters was not cleared in the down state of the ALIGN_IFO guardian, which caused the X arm to stay misalinged in this case.  I've now added clear history for the filters.  

Today we noticed that the EX beam diverter has been open since June 18th.  We don't normally switch this so it is not guardian controlled but we "usually" leave it closed.  It is beckhoff controlled so it is not monitored in SDF.  Today TJ added all the beam diverters we don't normally change in guardian to SYS_DIAG to prevent this from happening again (it was already checking the others).

We have now locked with the beam diverter closed, and see that the QPD spectra look the same between EX and EY.   (20418 and 21767 have some history.)  The peak in DARM at 78 Hz is also not here.  We will see if it stays gone, and check soon to see if the blinear coupling of ETMX ISI motion to DARM is gone with the beam diverter closed.  

Used double coincident lockloss time this morning to installl new Pcal inverse actuation filter at X-end. I took a transfer function between RxPD and EXC with Inverse actuation filter engaged. The result is attached below. The plot shows a good agreement at lower frequencies (upto few hundred Hz) and is about 2 percent off in magnitude and  7 degress off in phase at a KHz. This is expected because the foton implemetation of filter is little diffrent from its intended response.

We will test it with CBC waveform and detchar safety injection at the next opportunity.

The script used to make this plot is committed to SVN:

/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Scripts/INVACT_PCAL/analyze_invactpcal.m