Posted below are the past 10 day trends. The WeeklyXtal trends reflect the ongoing "beginning of the end" of th FE amplifier diodes with a confusing upwards twist (most recently) which I've queried Peter about as his last aLog also shows this ( https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=26154 ) but he made no comment about it. The WeeklyEnv trends shows a seemingly sizeable(?) drop in Relative Humidity between the 14th and the 20th. Curious that the curve is practically identical for the Laser and Anteroom as it is for the Diode and Chiller rooms given the distance between them.

Both EX and EY pump pressure have a big glitch on Feb 23 at 21:26 and 22:49 UTC. There were Guardian restarts going on around that time (alog25679 and alog25684). Average HPI-PUMP_L0_CONTROL_VOUT went up by ~10 counts on Feb 16. HPI-PUMP_EY_CONTROL_VOUT abd HPI-PUMP_EY_PS_PRESSI are glitchy and HPI-PUMP_EX_CONTROL_VOUT has been rising slowly. HPI-PUMP_L0_PS1, 2, 3, 4 pressures are flat (they look unreal).

Closed FAMIS #4518

TITLE: 03/21 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    Wind: 24mph Gusts, 17mph 5min avg
    Primary useism: 0.08 μm/s
    Secondary useism: 0.30 μm/s 
QUICK SUMMARY:Commissioning going on.Guests in the control room include; Jaime, Terra and Stefan

Activity Log: All Times in UTC (PT)

15:00 (08:00) – Start preparing the IFO for relocking.
17:00 (10:00) HFD will be doing prescribed burning to the NW of the site
17:01 (10:01) Bubba – checking on tumbleweed accumulation in desert between the arms
17:17 (10:17) Richard, Jenne, Hang – Going into LEVA to look at camera pointing
17:24 (10:24) Kiwamu & Patrick – Going into the CER to check the TCS-X Beckhoff
17:28 (10:28) Christina & Karen – Cleaning up at End-Y after grouting work
17:30 (10:30) Stefan – Going into LVEA to work on camera pointing 
17:45 (10:45) Reboot Video4 to fix frozen displays 
18:04 (11:04) Bubba – Back from the desert
18:05 (11:05) Grout work is finished at End-Y and in the LVEA
18:15 (11:15) Rick – Taking tour through LVEA
18:20 (11:20) Sheila & Jeff – Transition LVEA to laser hazard
18:30 (11:30) Rick – Taking tour to roof top observation deck
18:33 (11:33) Nutsinee – Recovering parts from the LVEA
18:55 (11:55) Rick – Off the LVEA roof
19:00 (12:00) Hugh – Going into the LVEA
20:40 (13:40) Travis – Going into Optics Lab
20:45 (13:45) Sheila – Going into LVEA to replace VP covers
20:50 (13:50) Sheila – Out of LVEA
20:52 (13:52) Travis – Out of the Optics Lab
21:08 (14:08) Filiberto & Tara – Going to both end stations electronics rooms
22:28 (15:28) Dave & Jim – Going to the End-Y CER 
22:32 (15:32) Kyle – Going to do CP-3 fill
22:51 (15:51) Kyle – Back from Y-Arm
23:00 (16:00) Turn over to Ed
 
End of Shift Summary:

Title: 03/21/2016, Day Shift 15:00 – 23:00 (08:00 – 16:00) All times in UTC (PT)
Support: Commissioning crew               
Incoming Operator: Ed

Shift Detail Summary: Commissioning team has been work on relocking the IFO today. Many problems have been fixed. Wind is coming up and is currently between a moderate and strong breeze (15 – 28 mph); there have been gusts in the mid 30 mph. Seismic activity is up a bit at the end stations. Microseism is also a little high but still within the bands.  

  

1330 - 1350 hrs. local -> To and from Y-mid 

Exhaust check valve bypass opened, LN2 at exhaust after 2 mins with LLCV bypass open 1/2 turn 

Next CP3 over-fill to be Wed. before 4:00 pm hrs. local 

The attached is the new calibration numbers.

The grouting is complete in the LVEA and both End Stations.

Today we noticed that there were some unidentified bright dots on the ITMX green camera (cam22) which had not existed before. The positions of the dots were found to be functions of the alignment of the ITMX compensation plate for some reason. We temporarily applied a large offset (-530 urad in yaw) on the compensation plate to minimize the effect on the centroid fitting. We tried moving the dots by moving the large suspended optics, but none of them showed dependencies. We have no idea why we started having thees dots. We will try using the camera as it is since the dots seem to be insensitive to the arm cavity alignment.

• 1st attachment: cam22 view 10 days ago (Mar 11th)
• 2nd attachment: current camera view with ITMX and ETMX misaligned. Also the ITMX compensation plate is misaligned with the large offset.
• 3rd attachment: current camera view with the green light resonating as a 00 mode The ITMX compensation plate is misaligned with the large offset.
• 4th attachment: PR2 with the X green light locked as a 00 mode. The green Y beam was blocked.
• 5th attachment: PR3 with the X green light locked as a 00 mode. The green Y beam was blocked.

PSL Status: 
SysStat: All Green, except VB program offline & LRA out of range 
Output power: 31.6w  
Frontend Watch: Green
HPO Watch: Red

PMC:
Locked: 7 days, 0 hours, 55 minutes
Reflected power:    3.0w
Transmitted power: 22.0w 
Total Power:       25.0w 

ISS:
Diffracted power: 7.48%
Last saturation event: 0 days, 0 hours, 1 minutes 

FSS:
Locked: 0 days, 0 hours, 1 minutes
Trans PD: 1.498v

Added 125ml water to the crystal chiller. Added 100ml water to Diode chiller as preventive maintenance. Have closed FAMIS #4142.

Sheila & Jeff Transitioned the LVEA to laser hazard.

re aLog 26140

Here are snaps of 0-120hz spectra for HAMs 2 thru 6 with the reference traces from 13 March (before the switch last week,) and the current traces from this morning at 3am.  Not even really suttle differences so I'd say at least no harm done from the switch to the common timing source.

Kiwamu, Patrick

Kiwamu said that the TCS X power was changing for the same angle requested and readback by the rotation stage. We powercycled the rotation stage chassis in the CER and did a search for home for the TCSX, TCSY and PSL rotation stages that it controls. Kiwamu says it is now workable, but from what he showed me it still appears to be giving significantly different powers for the same angle.

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

Attached are 45 day trends of the various PSL power monitors.

The degradation of the power matches the decline of the front
end laser pump diodes.