The front-end projection matrix elements for propagating HAM2 table motion to the IMs' suspension points had apparently never been installed.

However, the projections have already been computed in userapps/isc/common/projections/ISI2SUS_projection_file.mat, and the displacement vectors used in the computation agree with the systems diagrams (D120062[3456]). So I propagated these projection matrix values to the front-end.

It would also be nice to make and install the projection matrices for the OMs as well, since these have not been computed yet.

J. Kissel

I've updated the CAL-CS and CAL-EX front end models for the bug fix to the INJ ODC, as described in LLO aLOG 21804. As expected, no DAQ restart was required. I suspect that all ODC records reed to be re-filled out, I'll inform Duncan.

Recovery from the power outage is still ongoing.  All planned maintenance day activities have been postponed until recovery is complete.  Currently Keita and Peter are tweaking temps in the PMC.

All running now.

Corner--Pushed Level trip reset button and Green button on the controllers and restart was normal.  Except, PS #1 (south unit) was outputting less pressure than the other three.  We've seen this before after a restart and sure enough the pump was noisy gurgling like.  I changed the ACC & DEC parameters on the VFD and spun down the pump slowly.  I set these parameters to 600 seconds but it was still a little fast for the super low ugf of the controller s I doubled the PID gain to help it out.  A little glitch as the pump stopped and started going backwards before we got the valve closed.  After hitting the VFD reset it started back up and again a pressure glitch as the pump starts and the output valve was reopened.  Pretty sure no one cared at that point.  VFD and PID parameters returned to nominal.

Ends--The VFDs were registering a Low Voltage error, (not sure why this was not the case with the corner station--maybe because they have no power to them until the level trip is reset.)  This requires an EE approved panel intrusion to hit the reset and the normal restart follows.

At EndX the PV di not seem to be holding as it should after it looked like it was doing fine so I expected some kinda issue.  I made a trip to the EndX but it seemed fine at that point.  I spun it down anyway and restarted again and it again and since seems fine.

Travis, the operator, used the wiki instructions and managed okay with them.

This morning after Betsy and Jenne recovered the CS SUS, I tried turning the seismc platforms back on. The HAMs were unusually difficult, the chamber manager was stalling and insisting that the ISI and HPI nodes were stalled. A few things I tried mostly on HAM2, a few on the others:

1. Init-ing every body.

2. Engaging master switches. Occasionally, the chamber manager would go around behind me and turn them back off.

3. Stopping and restarting guardian nodes. On HAM2 I tried just the chamber manager, then all HAM2 nodes.

4. Stopping and Execing all nodes.

5. Reloading all the code on all 3 nodes.

Finally, the only way I could recover the HAM chambers was to go and engage the masterswitch on ISI and HPI, put ISI in Damped, HPI in Isolated, then when HPI was up, I put ISI in High_isolated. When that was done the chamber manager was happy, after hitting INIT on the manager. I've checked HAM4 and HAM6 after and those chamber managers work. The BSC guardians have also been behaving all morning, from what I've seen.

Currently all seismic platforms are up and running.

  Nutsinee, Peter, Jason, Jeff B.

   Checked the TCS-Y chiller system for leaks. Found no active leak in (1) the chiller unit, (2) the external plumbing, or (3) on the TCS-Y table. There were signs of older leaks on both ends of the RF amp. These were dry stains and I could find no current drips around these fittings. I checked in the table (very limited view) and found no evidence of water pooling inside the table. 

   A check of the plumbing under the beam tube, last week, (from the mechanical building to the vertex) was also negative. 

   We had a quick look at the TCS-X table, and found no apparent problems. 

   Both chillers are up and running. I topped off both chillers so they are at the same levels. Will continue to monitor the system.   

RF Oscillator is set at 40.68 MHz.

DC power supplies set at 29.99V and 28A. Output reads 30.00V and 0.75A for TCSX, 30.00V and 0.78A for TCSY.

The rotation stage has been reset for both TCSX and Y (searched for home, then go-to power). TCSX output is now 0.229W.

TCSY laser is currently turned off. It's been off for over a month. I checked with Evan and he said it should be left off for now since no one will play with it anytime soon. To turn it on just hit "ON" button on the CO2Y medm screen. The controller box is ready to go.

The trigger reference level for the pre-modecleaner was changed from 1.35 to 1.10.  This change was accepted in SDF.  The reason for the change is

that with the previous value, the sequencer for the pre-modecleaner thought it was locked when clearly it wasn't.  The lower value was more consistent

with observation.

Having trouble restarting end Y.

If I remember correctly:
h1ecatc1 was running but had some terminals in the INIT ERR state.
h1ecatx1 was white on the CDS overview.
h1ecaty1 was still running and all terminals were in the OP state.

For h1ecatc1, h1ecatx1 and h1ecaty1:
Opened the system manager from the target directory.
Activated the configuration and restarted in run mode.
Opened each PLC from the target directory.
Logged in and ran it (if it was not already running).

I believe I also restarted the EPICS IOC on h1ecatx1.

Burtrestored all to 5:10 this morning.

'OpsInfo' and 'Lockloss' tags have been added to the LHO and LLO aLOGs. CDS Bugzilla 941 for reference.

Activity Log: All Times in UTC (PT)

07:00 (00:00) Take over from TJ
07:46 (00:46) ETM-Y saturation
08:24 (01:24) ETM-Y saturation
09:22 (02:22) ETM-Y saturation
09:33 (02:33) Reset timing error on ETM-X
09:53 (02:53) ETM-Y saturation
10:42 (03:42) ETM-Y saturation
12:19 (05:19) ETM-Y saturation
12:39 (05:39) ETM-Y saturation
13:05 (06:05) LLO – Going down for maintenance
13:33 (06:33) Power Hit – Short duration power loss 
14:15 (07:15) Richard – Going to End-Y to check end station and reset ESD high voltage
14:26 (07:26) Fire Systems Maintenance on site to test hydrants 
14:30 (07:30) S&K Electrical on site
14:48 (07:48) Richard – Back from End-Y  
14:50 (07:50) Richard – Going to End-X to check end station and reset EDS high voltage
14:55 (07:55) Ken – Going to End-Y to pull cables from End Station to Ion Pump
14:57 (07:57) Karen & Christina – Cleaning in the LVEA
15:00 (08:00) Turn over to Travis


End of Shift Summary:

Title: 10/20/2015, Owl Shift 07:00 – 15:00 (00:00 – 08:00) All times in UTC (PT)

Support: Richard, Peter

Incoming Operator: Travis, 

Shift Summary: 
13:33 (06:33) – Lost power to site for a couple of seconds, but long enough to shut down most systyems. Starting site recovery. Peter working PSL recovery. Richard working on site recovery.  

The power went out this morning.  I went to restart the laser.  Pretty much all the alarms on the status screen were set.  TwinSafe reported that it was okay.  The interlock box status LED did not light up in either the on or off position.  I reset all the serial ports on the Beckhoff computer and things came good again.  The regular startup was invoked.  Laser came up.  I engaged the output of the high voltage power supply.

None of the servos were locked by the time I got back to the Control Room, as this requires a front end model restart.

A 0634 this morning the Bonneville Power Administration had power dip.  Not sure what was happening yet, but this caused a site wide 1 second outage at LHO.  We are in the process of restoring systems.

J. Kissel, K. Izumi, D. Tuyenbayev

As expected from preliminary analysis of the actuation strength change (see LHO aLOG 22558), DARM Open Loop Gain TFs and PCAL to CAL-CS transfer functions reveal minimal change in the calibration of the instrument. For these measurements, all we have changed in the CAL-CS model is switching the two signs in the ESD stage, which in turn cancel each other. As such, the only change should be the change in discrepancy between the canonical model and the actual current strength of the TS / L3 / ESD stage. Again, this change was small (sub ~10%, 5 [deg]), and has been well-tracked by calibration lines, so we will continue forward with focusing our efforts on determining how to apply the time-dependent corrections.

Attached are screenshots of the raw results. Darkhan's working on the more formal results. Stay tuned!

The after-bias-flip results live here:
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Measurements/DARMOLGTFs/
2015-10-15_H1_DARM_OLGTF_7to1200Hz_AfterBiasFlip.xml

/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Measurements/PCAL/
2015-10-15_PCALY2DARMTF_7to1200Hz_AfterBiasFlip.xml

Darkhan, Sudarshan, GregM, RickS

The plots in the first attached multi-page .pdf file use SLMtool data (60-sec. long FFTs) taken during the month of Oct. so far.

The first page shows the time-varying calibration factors.

The next eight pages have two plots for each of the four Pcal calibration lines (36.7 Hz, 331.9 Hz, 1083.7 Hz, and 3001.3 Hz).

The first of each set shows the calibrated magnitudes and phases of the strain at each frequency (meters_peak/meter).

The second plot in each set shows ratios (mag and phase) of the three methods (Cal/Pcal, GDS/Pcal, and Cal/GDS).  The center panels (GDS/Pcal) are most relevant because we expect discrepancies arising from the CAL_DeltaL_External calculations not including all the necessary corrections.

The plots in the second multi-page .pdf file show the GDS/Pcal ratios at the four Pcal line frequencies over the time period from Oct. 7 to Oct. 11, with histograms and calculated means and standard errors (estimated as standard deviation of the data divided by the square root of the number of points).

Note that these time-varying factors (kappa_tst and kappa_C) have NOT been applied to the GDS calibrations yet, so we expect the GDS/Pcal comparisons to improve once they are applied.