TITLE: 03/21 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC

STATE of H1: Observing at 68Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: Maintenance day. Tumbleweeds blocked the Xarm so that filtered out some work. I had some issues locking with ALS_DIFF not fining IR and causing a lock loss. 12 seconds after it would set the offset to 1380, the IMC would drop out and kill the lock. What eventually worked, although it did not identify the problem, was going through that step by hand and scanning through the offsets slowly. I'm not sure if it will happen again so future operators be wary.

LOG:

• 15:15 Out of Observing for Maintenance Day
• 15:16 Richard to LVEA to check on the UPS for the PSL's NPRO
• 15:20 Jim B fixing October tconvert bug
• 15:27 Fil to EY starting interlock work
• 15:40 Richard starting work on WP6530 to open irises on IR cameras
• 15:50 Norco with LN2 delivery at the gate
• 15:55 Robert to LVEA for PEM testing
• 16:02 Karen to Mid Y for cleaning
• 16:27 Richard out and done
• 16:38 Lock loss
• 16:40 Carlos taking down the HWS machine to swap cards
• 16:42 Sudarshan to EY for PCal work
• 16:44 Robert out
• 16:48 Robert and Fellows to Electronics bay and LVEA
• 16:49 Kyle to EY
• 16:53 Loaded Sheilas SUS filters
• 17:08 Jason to PSL antiroom to grab a part.
• 17:24 Jason out, Karen to LVEA for cleaning
• 17:45 Kyle back from EY
• 17:54 Sudarshan leaving EY
• 18:00 Robert and Fellows out of LVEA and leaving for EY
• 18:02 Fil to sqeezer bay to grab items
• 18:30 Richard and guests into LVEA
• 18:45 Richard and guests out
• 18:52 Fil done
• 19:01 Nutsinee to LVEA to sweep
• 19:17 Nutsinee back
• 19:18 Robert and Fellows are back
• 19:18 Richard plugging in in LVEA
• 19:22 Richard out
• 21:31 At low noise. Robert to do HEPI measurements and then Jeff K will spend ~40min for calibration.
• 22:20 Jeff K starting calibration measurements.
• 22:59 Observing

Ran the full script for EX but had to cut EY short after about 35min. I did not get the chance to process the data yet, but I can do it tomorrow.

We were able to get images using the Pcal camera at ENDY today and these images will be used to determine the position of the Pcal beam. (Analysis to follow). We were not able to get down to ENDX because of tumbleweed infestation. We will probably try to get images from ENDX during Thursday's commissioning effort.

WP 6532

Updated GDS software Ubuntu 12, Ubuntu 14, and Debian 8 workstations.  This replaces foton with a new version that writes the gain coefficient in scientific notation with extended decimal places.  The issue is trying to find a format that will work for gain coefficient values of 479871010208.8750610351 and 1.827245000521226e-32, as an example.

Not sure anything changed since we were not locked at the time but I used the lens controller to open the iris all the way on ITMx and ITMy.  Without a beam I just have to believe they are all the way open.  Perhaps next time we are out of observing and locked I will shut and open the iris to verify its function.

To save its life span.

Found a power cord plugged into the wall opposite to HAM4 (now unplugged). Probably had been plugged since last week we did the HWS table work.

I measured the beam spot positions on MC1, MC2, and MC3, using the procedure in alog 31402.

I have made a new guardian code called ISC_PRMICA which we will use on this coming Thursday to do a high power PRMI test. The code is based on ISC_DRMI with some modifications to load different set of locking parameters. The code is not tested yet. It lives at

/opt/rtcds/userapps/release/isc/h1/guardian/ISC_PRMICA.py

Using MCMC fitting to the sensing function measurements made in ER10 and O2, we can establish an estimate on the variation of the optical response parameters. The table below gives the typical (simple mean), maximum, and minimum of the measured maximum a posteriori values from the MCMC fits.

Parameter             typical    maximum    minimum
---------------------------------------------------
Gain (ct/m)           1.143e6    1.166e6    1.085
Cavity pole (Hz)      347.1      358        341
Time delay (usec)     0.5        2.5        -1.3
Detuned spring (Hz)   7.3        8.8        4.9
Detuned spring 1/Q    0.04       0.08       1e-3

This covers measurement dates from Nov 07 2016 through Mar 06 2017.

Attached are plots showing these trends for ER10 and O2. Note that I have added--where possible--the GDS calculated values for kappa_C and f_c (black crosses). Note that these values do not come with error bars because the uncertainty would need to be computed from the measurement uncertainty of what goes into the calculate of kappa_C and f_c. It would be useful to have calibration lines running during the measurements to see if there is any trend or drift during the measurements themselves.

The HWS machine got rebooted so I restarted the code. I edited the code not to take new reference centroids but the tmux session didn't seem to recognize the change in the script so it ended up taking a new reference centroids anyway (to fix this issue I probably should have just exit the session and come back in). HWSX data starting from Tue, 21 Mar 2017 17:35:48 UTC now have new reference centroid taken during cold IFO (down time). All the optics were aligned.

I reset both PSL power watchdogs at 17:24 UTC (10:24 PDT).  This closes FAMIS task 3642.

WP 6489

The tconvert program was updated for Debian 8 workstations to a version that can correctly convert dates containing the month of October.  This version can also correctly obtain Bulletin C for leap second updates, using https.

TITLE: 03/21 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    Wind: 9mph Gusts, 5mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.14 μm/s
QUICK SUMMARY: Starting maintenance day. Been locked since my shift yesterday.

TITLE: 03/21 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:

At 15:00 utc, took H1 PREVENTATIVE MAINTENANCE for Maintenance Day.  H1 was locked over 19 hrs.  Did NOT hit Load Coefficients for Sheila's filter change since we were locked entire shift.
LOG:

• 7:34 PI Mode 23 rang up while I was out of room making breakfast.  It was up for a few seconds and came back on its own.
• ~14:00 Balers starting to work on the X-arm (between here and MX now & making their way to EX).
• 14:02 Chris S out to work in MX.

Relatively quiet & smooth sailing.  L1 was knocked out by a 4.6 Guatemalan quake (we rode through it and it didn't show up on our seismic BLRMS signals).  Have been locked over 15hrs with a range  hovering around 69Mpc.

I'm taking a quick walk over to my office for about 10-15min.

TITLE: 03/21 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Jeff
CURRENT ENVIRONMENT:
    Wind: 16mph Gusts, 13mph 5min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.15 μm/s  (really quiet & below 50%)
QUICK SUMMARY:

Approaching 12hrs of being locked. 

Jeff informed me of a To Do item for the next lockloss (Load Coeff for new filter files, as noted in Sheila's alog#34954); or it can be done during Maintenance Day.

Shift Summary: Ran A2L DTT check – Pitch is rung up a bit, Yaw is OK. Ran the A2L DTT check at the end of the shift. Pitch is approaching 0.8, Yaw is still at or near the reference. PI Mode-23 rang up a couple of times, but self-damped almost immediately. No other issues arose during the shift.    

EX had a dip in pressure around March 9th from 97.7 to 97.5, but other than that all looks good.