Title:  11/12/2015, Evening Shift 00:00 – 08:00 (16:00 – 00:00) All times in UTC (PT)
	
State of H1: 00:00 (16:00), IFO locked at NOMINAL_LOW_NOISE, 22.2w, 75Mpc.  

Outgoing Operator: TJ

Quick Summary:  IFO has been in Observing mode for 4 hours. Seismic activity is hovering around 0.1 um/s. Microseism is centered around 0.45 um/s, with a slight upward slope over the last 2 hours. Wind is a gentle to fresh breeze (8 – 24 mph). There is a strong storm system moving in from the northern Pacific, so weather conditions are predicted to deteriorate during the evening. 

• TITLE: 11/12 DAY Shift: 16:00-00:00UTC (08:00-16:00 PDT), all times posted in UTC"

• STATE Of H1: Observing at 79Mpc for 3+ hours

• SUPPORT: Keita, Jim W

• SHIFT SUMMARY: Had one lockloss with similar symptoms like yesterday, the EX ISI began to have drastic movement and eventually a lockloss. Jim W and I changed the blends and for one degree of freedom on each end to the Quite_90s. It has been working so far...

• INCOMING OPERATOR: Jeff B

• ACTIVITY LOG:

•  
• 16:42 Karen into Change Room to grab some booties.
• 16:42 Joe to Xarm beam enclosure sealing
• 18:11 Lockloss
• 19:25 Jim changing blends. EX-Y Quite_90, EY-X Quite_90
• 19:50 Gerardo - To X2-8
• 19:51 Joe - Back
• 20:17 Observing
• 20:17 Gerardo back
• 20:48 Start HW inj testing
• 21:20 HW inj testing done
• 21:20 Joe to Xarm beam enclosure sealing
• 22:36 Joe back
• 22:48 Gerardo to Y2-8
• 23:23 Gerardo back

• Poor duty cycle compared to O1 so far (~36%)
  • Due mainly to RF45, ETMX ISI oscillating, and earthquakes (and of course tuesday maintenance).
• Glitches
  • Two distinct bands of omicron glitches stand out between 10 - 20 hz on the 10th from ~1:30 to 7:00 UTC. These do increase the glitch rate noticeably. I could not find any correlation with environmental channels. Hveto picks out SUS-ETMY_L1_WIT_L_DQ.
  • Glitches appear as things go south towards the end of locks on the 11th. Once as wind was gusting and another when ETMX ISI started oscillating.
  • Daily CBC
    • BBH: one trigger with new SNR over 9 for all three days. Five have 8 < newSNR < 9.
    • BNS: largest new SNR for all three days was 7.295
• Fancy new colors on summary pages!

Adam, Chris

Adam has corrected the intent bit issue at LLO (see previous alog entry). We are going to schedule 1 hardware injection as a test. The following is added to the schedule:
1131405159 1 1.0 coherentbbh0_1126259455_

This is the last scheduled hardware injection for tonight.

Will summarize all activities later.

GWINC quantum noise curve is replaced with dynamically-generated shot noise curve. Radiation pressure will be included later.

The null stream spectrum shows 8×10⁻⁸ mA/rtHz shot noise, which seems to imply 17 mA of dc photocurrent on the sum, rather than the expected 20 mA.

Chris, Adam

We are going to start testing using tinj with the PCAL hardware injection filters.

Observing at 79Mpc.

Winds began to pick up a bit during alignment, but has since dropped back down to 20mph or below. Jim W wanted to change the blends for the end stations in the direction of the winds to the Quite_90s. So we did and seems to have worked well so far.

We have changed the blends for ETMX Y and ETMY X to the Quite_90 from the 45mHz.

The LHO DCS diskcache server froze this morning around 5 am PST. After several reboots failed to solve the problem, Dan Moraru reboot the main samfs file server too, and we restarted services, including condor, rds, and hoft aggregation and some Disk2Disk processes. All DCS services should be working again, and H1 summary pages should catch up soon.

SudarshanK, ChrisB, DaveB

We installed inverse anti-imaging filter on pcal hardware injection path, channel H1CAL-PINJX_HARDWARE, at FM3. The SDF screen and ODC bit are changed accordingly.

This filter will produce a better estimate of the  hardware injection  at higher frequencies.

Lockloss at 18:11 UTC

The winds have picked up slightly (20mph) and then the ETMX ISI starting moving in the X direction. It settled down for a moment, but then came back and after about 30 secs of some large swings, we lost lock. Jim W wants to try some different settings on the next go around.

Attached are the results of the charge emasurements taken earlier in the week.  Things look OK in charge land - some of the data points have a larger error bar likely because of added foot traffic at the end stations during maintenance.

The output power of the front end seems to have a ~20 minute oscillation in it.  Seems to
coincide with crystal temperature fluctuations.  The crystal fluctuations however do not
coincide with the flow rate.  I cannot determine if it is due to fluctuations in the crystal
chiller flow rate because we do not have enough resolution but the crystal chiller flow rate
appears to be constant.

The fluctuations do not seem to coincide with humidity either.  Nor room temperature.
Possibly fluctuations in the NPRO output power (FrontEndPowerOscillation6.png), it is
hard to tell.  There seems to be a small coincidence with the NPRO second pump diode
(FrontEndPowerNPROD2.png).  There does not appear to coincidence with any of the other 
NPRO signals monitored.

I should mention that the laser power mentioned here is prior to the power stabilisation
sensing.  The same fluctuation is not apparent in the reflected signal from the pre-modecleaner.

• TITLE: "11/12 DAY Shift: 16:00-00:00UTC (08:00-16:00 PDT), all times posted in UTC"

• STATE Of H1: Observing at 78Mpc for 16+hours

• OUTGOING OPERATOR: Travis

• QUICK SUMMARY: He had a very quiet shift, this is the same lock as the one I left Jeff with yesterday so it doesn't seem that the ISI swinging has returned.

Title: 11/12 Owl Shift 8:00-16:00 UTC (0:00-8:00 PST).  All times in UTC.

State of H1: Observing

Shift Summary: Smooth sailing all morning. Only a handful of ETMy saturations, but none related to any RF45 issues.  Wind is calm and microseism trending down slowly.

Incoming operator: TJ

Activity log:

10:40 GRB alert

13:45 GRB alert

15:41 Noticed an ETMy timing error on the CDS overview screen had popped up

15:43 Chris to X arm for beam tube sealing

Observing the entire shift so far.  A few ETMy saturations, but not related to any RF45 glitching.

Kyle, Gerardo 

Today we closed the 10" gate valve at BT port X2-8, vented the port-side, removed the existing hardware and coupled the new ion pump and hardware to it.  We then pumped out the new volume with the leak detector and helium leak tested the new joints.  This unit is part of the overall ETM charge mitigation efforts taking place at both sites.  A similar unit was installed at BT port Y2-8 a few months ago.  Both of these units still need to be baked-out and tested before being available for use.  We plan on doing so over the next few weeks.