PSL Status: 
SysStat: All Green, except VB program offline & LRA out of range 
Output power: 30.4w  
Frontend Watch: Green
HPO Watch: Red

PMC:
Locked: 2 days, 22 hours, 52 minutes
Reflected power:    1.6w
Transmitted power: 22.9w 
Total Power:       24.5w 

ISS:
Diffracted power: 8.32%
Last saturation event: 0 days, 1 hours, 11 minutes 

FSS:
Locked: 0 days, 1 hours, 56 minutes
Trans PD: 1.317v

Complete results from this DQ shift may be found here.

• 31 Dec and 1 Jan appeared to be nominal as far as information available on the Summary pages. However, Josh Smith reports RF beats / whistles on the 31st and again for the 2nd. It is possible that whistles, usually not a problem at LHO, are present through the entire shift. See alog.

• A peculiar periodicity in seismic noise in the 1-3 Hz band was seen on 31 Dec. See alog. While it is not known if it is an artifact or real, a similar pattern appeared on 16 Nov as well as other dates where less seismic BLRMS information was available.

• The last lock on 1 Jan was lost due to a PSL problem. See alog. The following day (2Jan) the first lock exhibited excess low frequency noise that seemed strongly correlated with PSL ISS and IMC frequency stability. See alog. While the second lock of that day showed improvement but the influence of PSL and IMC glitches could be seen on the following day (3 Jan).

• 2-3 Jan also showed elevated glitch rates with a large excess at low frequencies on 2 Jan and patterns of glitches at evenly spaced frequencies on both days. A line at about 1500 Hz (second harmonic of the violin mode) was visible on 2 Jan. The second locks on both days showed an increased number of range loss glitches (a.k.a. ETMY saturations).

   Lost lock at 20:50 (12:50) due to the drop in power in POP_A_LF. Did an initial alignment and was able to relock the IFO on the first try. Back in Observing with 21.7W and 78Mpc. 

   The POP_A_LF signal is still a bit ragged and is just above the IMC-MC2_TRANS signal. 

   The IFO remains up and in Observing. Environmental and seismic conditions are favorable. The POP_A_LF_Output continues to be an issue. There was an attempt to tweak PR2 to bring this back up. Some gain on the problem was made but that has faded away. Range continues to suffer (mid 70s to high 60Mpc). Will hope the lock holds.   

   17:55 (09:55) took the IFO to Commissioning mode so Sheila & Jenne could try to improve the power decline apparent in the LSC-POP_A_LF_Output signal. After tweaking PR2 pitch & Yaw, POP_A_LF looks a little better but is still a concern. The investigation into the problem continues. 

   18:52 (10:52) - Put the IFO back into Observing mode. 

J. Kissel, for the CAL Team

I attach a picture of the whiteboard which shows the strawman schedule of activity during calibration week (Jan 5 to Jan 12). This list contains everything mentioned on the End-Of-Run measurement page of the JRPC Wiki that is relevant for LHO, but just organized into a rough schedule. Wish us luck!

P.S. These measurements are covered by WP 5674.

Attached are 2 trends of the FSS RefCav TPD.  The first is a 14 day trend showing the last decay up until the 1-1-2016 lockloss and the subsequent RefCav adjustment.  The second is a 3 day trend detailing what the RefCav TPD has done since we adjusted it on 1-1-2016.  Since the adjustment the TPD has fallen by ~0.2 V to 1.31 V, but has appeared to level out there over the last 24 hours.  As it stands now no adjustment is necessary; 1.31 V on the TPD indicates that there is plenty of light for the ALS system to function correctly (danger zone is ~0.9 V on the TPD).  I will continue to monitor as this could change (but hopefully won't).

Attached are 7-day pitch, yaw, and sum trends for all active H1 optical levers.

This may be a rehash but WP review reminded me.  Re WP 5618

The attached 30 day trends of the three Ground STS2's Mass position shows that they are all out of spec.  The values for these should be something smaller than 5000 counts or 1.5 or 2 volts.  If it can be managed during Tuesday Maintenance without interfering with calibration or other work, I'd like to again try recentering these.  Much easier now given the remote capability.

   No reports from the various groups as all are getting back up to speed after the year end holiday break. 

Planned Tuesday Maintenance: 
(1). Jeff B. - Run dust monitor vacuum plumbing at End-X
(2). Jeff K. - Run End-X calibration
(3). Jeff K. - End-X UIM electronics investigation
(4). Richard - Survey of on site cameras

   Starting after the 01/05/16 Tuesday maintenance, the remaining day shifts (08:00 16:00) during the week will be given to the calibration group. These calibration activities may go beyond 16:00. 

   Starting Thursday 01/07/16 there will commence a regular 08:30 meeting in the control room to review FRS tickets and to plan for the various activities around the site. This will be similar to the Monday meeting but will concentrate on FRS items not work permits.         

  Transition Summary:
Title:  01/4/2016, Day Shift 16:00 – 00:00 (08:00 – 16:00) All times in UTC (PT)
	
State of H1: 16:00 (08:00), The IOF has been in Observing mode for last 3 hours. Range is 74Mpc and power is at 21.8W. Environmental conditions are good. As Jim reported, the slow degradation of power via POP_A_LF may foretell of a lock loss. Will keep an eye on it. 
 
Outgoing Operator: Jim

Title: 1/3 Eve Shift 0:00-8:00 UTC (16:00-24:00 PST).  All times in UTC.

State of H1: Observing

Shift Summary:  Started the shift with an unlocked IFO due to EQ.  After EQ ringdown, aligned and locked IFO.  Since going to Observing, we have been watching the slow degradation of power via POP_A_LF, much like last EVE.  At one point we attempted to reverse the trend by adjusting ETMy pitch, but were thwarted by WFS control loops.

Activity log:

11:30 Lockloss probably from whatever is causing POP to drift down

13:15 Back to observing, shortly thereafte I notice that POP is once again drifting down. No clear cause, environment is quiet, RF45 seems to be behaving, ASC foms etc all look nominal.

14:45 Bubba starts clearing the parking lot. This has a noticeable effect on the IFO.

Starting at about 14:30, Bubba started cleaning the parking lot. He started with shoveling, which had no effect. He's now running the tractor near the OSB and it's having some effect on the IFO. The range has gotten pretty ratty and POP (which is still trending down after re-locking 2 hours ago) is occasionally getting knocked around. Think we'll survive, but analysis people should be aware when looking at this mornings data.

Can't say I'm suprised, but we just lost lock. The hours long decline in POP had looked like it was stabilizing. Apparently not. Time to see how re-locking goes.

Title: 1/3 Eve Shift 0:00-8:00 UTC (16:00-24:00 PST).  All times in UTC.

State of H1: Observing

Shift Summary:  Started the shift with an unlocked IFO due to EQ.  After EQ ringdown, aligned and locked IFO.  Since going to Observing, we have been watching the slow degradation of power via POP_A_LF, much like last EVE.  At one point we attempted to reverse the trend by adjusting ETMy pitch, but were thwarted by WFS control loops.

Incoming operator: Jim

Activity log:

0:33 Vinny +1 to LVEA and Betsy to Optics Lab

1:08 Vinny +1 out

1:22 Adjusted ALS fiber polarization for both X and Y

1:27 Switched ETMx ISI X blend to 90 to stop an oscillation and began initial alignment

1:29 Gerardo to CP3

1:30 Betsy out

1:46 Betsy to LVEA for cables

1:56 Gerardo done

2:00 Betsy out

2:50 Observing

6:28 Commissioning mode to adjust ETMy pitch in attempt to save lock

6:40 Back to Observe

7:16 H1:FMC-CS_LVEA_REHEAT_4_DEGF alarm

We are once again experiencing the slow degradation of power as we saw during my shift yesterday.  At Kissel and Betsy's suggestion, we briefly went out of Observing in order to attempt to save the lock as we are approaching the "point-of-no-return".  I adjusted ETMy in pitch since Betsy found a correlation between ETMy drifting down in pitch and the POP power dropping.  This worked temporarily, until the WFS caught wind of my treason and fought back.  We decided to surrender and let it play out. 

The ETMy has been slowly sagging over the last few months.  Recently, the sag rate has increased.  While the temperature control at EY appears to be noisier during this December's cold spell, the overall temp has not changed by a large (greater than a deg C) amount, so I doubt that is the full cause of the drift.  However, there have been a few pressure changes that the ETMy chamber has witnessed, according to the VE pressure channels I picked off and plotted (attached).  I can't correlate all of the vertical motion humps exactly to these pressure steps, but the direction is correct: lower pressure means a a lower QUAD - that said, the sag usually happens much faster than weeks when the pressure or temp is changed, so wt-heck?.  The most recent step in pressure shown on the plot was Dec 11th when the VE crew was doing some work on an IP bakeout at Y2-8.  I'll poke them to see what the nature of the pressure step is.  I worry a bit that there is something wrong with the channel after the step feature since it goes very quiet past that point.

The corresponding ETMy pitch motion change is much more subtle, which is good from an alignment standpoint.  The BOSEMs still have plenty of signal, so we shouldn't have any issues with drive due to this drift.

Another day, another mystery.  Keep H1 weird.

Just because...

While watching the IFO come back up, it was noticed that the live trend of ISS Diffracted Power was wiggling alot like the live trends of POP_A and IMC_TRANS.  Attached is a trend for the curious.