Perhaps the clearest trend of reference cavity transmission versus room temperature that I've seen thus far.
TITLE: 01/19 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 60.6086Mpc
OUTGOING OPERATOR: Jeff
CURRENT ENVIRONMENT:
Wind: 7mph Gusts, 5mph 5min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.63 μm/s
QUICK SUMMARY: Jeff left me with a freshly locked, Observing IFO. Roads into the site were terrifying, especially Route 10 and the site entrance road.
Ops Shift Log: 01/18/2017, Evening Shift 00:00 – 08:00 (16:00 - 00:00) Time - UTC (PT)
Shift Summary: Ran initial alignment. Had a bit of problem with Y-Arm green and Input Align. After correcting these, the rest of the alignment went smoothly. The IFO relocked on the first try with no apparent problems. Just after relocking, Sheila pointed out the A2L noise looked bad. DTT confirmed it was. Ran the A2L script. PI Modes 27 & 28 had also rung up. Both were suppressed. Put the IFO back into Observing.
After Lockloss could not get ALS to lock the arms. After several tries decided to run Initial Alignment. The alignment hung up on SRC_ALIGN, which eventually tripped the SUS SRM
WD. I could not reset the M1 watchdog from the OPS terminal. Sheila reset the WD from a remote session, and SRC_ALIGN completed when rerun. Tried relocking again. There was still problems with locking, so ran another initial alignment, which completed without issue.
Tried relocking again but cannot get past SWITCH_TO_QPDS. After finding some O1 aLOGs tried waiting for 3 minutes at CARM_ON_TR for 3 minutes, and for good measure 2 minutes at REDUCE_CARM_OFFSET. This time made it past SWITCH_TO_QPDS and all the way to NOMINAL_LOW_NOISE. Set the intent bit to Observing.
Activity Log: Time - UTC (PT)
IFO had been locked for the first half of the shift. Enviromental conditions are good. All commissioners have left the site. At 04;01 (20:01) OMC DCPD reported a saturation and the lock was lost. Relocking at this time.
While running SRC_ALING during Initial Alignment the SRM watchdog tripped. I reset the Master Switch but could not reset the M1 watchdog from the OPS terminal. The RMS values were well below the RMS Threshold levels. Sheila reset the watchdog from a remote user session.
After relocking, accepted the SDF difference in the ISS_REFSIGNAL to get into Observing mode.
Ops Shift Transition:01/18/2017, Evening Shift 00:00 – 08:00 (16:00 - 00:00) - UTC (PT)
Discovered while trying to determine why it appears that there are no alarm levels currently set for the FMCS channels. It appears the last burt snapshot for the FMCS IOC that contains an alarm level is /ligo/cds/lho/h0/burt/2016/08/25/11:00/h0fmcs.snap. Found by running: cd /ligo/cds/lho/h0/burt/2016 grep -r HIGH */*/*/h0fmcs.snap The last file listed is 08/25/11:00/h0fmcs.snap. The autoBurt.req file in /ligo/lho/h0/target/h0fmcs has a modification date of Aug 25 11:34. It does not contain any alarm levels.
I burtrestored the IOC to the snapshot taken on Aug. 25 2016 11:00 and wrote 12.0 to H0:FMC-MILLIAMP_MAXVAL. I'm not certain what I did to lose the autoBurt.req file that has the alarm levels in it. I will work to restore it.
It looks like the last snapshot file with a severity set is /ligo/cds/lho/h0/burt/2016/04/13/12:00/h0fmcs.snap (April 13 2016 12:00).
I have updated the autoBurt.req file in /ligo/lho/h0/target/h0fmcs. This one has the alarm level and severity channels in it. I have also added it to the projects svn repository in trunk/epics/iocs/fmcs. I have burtrestored the IOC using the snapshot from April 13 2016 (/ligo/cds/lho/h0/burt/2016/04/13/12:00/h0fmcs.snap).
TITLE: 01/18 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Locking
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: Struggled a bit at the beginning of the shift, but made it work (see alog33407). Lost lock 30min before the end of my shift, went to lock PRMI and there were no flashes and the camera looked terrible. I started to do an initial alignment starting from Input_Align, and I couldnt get through PRM_ALIGN. Something seemed to be off in pitch by quite a bit, but I couldn't get it before I handed it to JeffB.
LOG:
Lock length was 3hrs, 04 mins
I turned off Supply Fan 2 at E Y since the weather is warming up and temps seem to be stabilizing (sorta).
This probably explains the Dust Monitor alarm (300u) & Low Temp Alarms (16:45 & 18:35UTC)
h1build crashed earlier this morning. Carlos recovered the machine and I restarted the Beckhoff SDF systems.
2017_01_18 12:49 h1sysecatc1plc1sdf
2017_01_18 12:49 h1sysecatc1plc2sdf
2017_01_18 12:49 h1sysecatc1plc3sdf
2017_01_18 12:51 h1pslopcsdf
2017_01_18 12:51 h1sysecatx1plc1sdf
2017_01_18 12:51 h1sysecatx1plc2sdf
2017_01_18 12:51 h1sysecatx1plc3sdf
2017_01_18 12:51 h1sysecaty1plc1sdf
2017_01_18 12:51 h1sysecaty1plc2sdf
2017_01_18 12:51 h1sysecaty1plc3sdf
2017_01_18 12:54 h1hpipumpctrlsdf
After the Carlos and Dave restarted the build machine and got the SDF Beckhoff running again, we are all clear and Observing at 60Mpc
It has been a struggle, but we have finally made it to Low Noise.
Locking Notes
Started out the morning not being able to lock the arms in green, it looked like symptoms of useism from the frequency of the arm power. Jim W and I tried many different configurations before settling on the original configuration that we started on. From there I was able to lock the Y arm in green, but the X arm would slowly decay with the WFS on. I tried realigning many different optics in the arm, as well as BS and PR3 to increase the COMM Beatnote, but nothing seemed to help.
I read Jenne's awesome guide and looked at the error signals and tried to get them all into an acceptable area. This is where I struggled. I could get DOF1 and 2 closer to 0 but then 3 would be way off, or another variation like that. I ended up just putting DOF1&2 close, but kept DOF3 far off (~0.6) and then turned on the WFS for the first two. From here I would move ITMX P a bit, then wait for the WFS to catch up, then move it some more, and then wait, then adjust PR3 for the beatnote, and repeat. The entire process was slow and sometimes looked like it was actually making things worse, but it eneded up working and I would hold Xarm in green with all WFS on.
The rest of initial alignment took time since everything seemed to be a bit misaligned, but made it through using only the tricks that are in our troubleshooting wiki.
Other Notes
h1build crashed this morning which brought down the beckhoff SDF. The CDS team is working on bringing it back up.
Weather is warming (~30F), which may make the ice conditions a bit more slippery. We will see.
Starting CP3 fill. LLCV enabled. LLCV set to manual control. LLCV set to 50% open. Fill completed in 344 seconds. LLCV set back to 15.0% open. Starting CP4 fill. LLCV enabled. LLCV set to manual control. LLCV set to 70% open. Fill completed in 1094 seconds. TC A did not register fill. LLCV set back to 33.0% open.
Raised CP4 LLCV from 33% to 34% open. Left CP3 as is. May increase after tomorrow's fill.
FAMIS task 6881 Spectrum attached.
| Work Permit | Date | Description | alog/status |
| 6439.html | 2017-01-17 13:31 | Determine pointing of ITM and CP beams for scattered light investigation. Install viewport guillotine in ITMx and ITMy oplev housings, remove bellows between guillotine and oplev receiver, trace oplev beams. Drive CP and ITMs with offsets to determine which beams are which, compare to D1600385 ray trace map. Requires IFO to NOT be locked. | |
| 6438.html | 2017-01-17 11:15 | Remove h1tw0 channels from EDCU. | 33385 |
| 6437.html | 2017-01-17 07:05 | Remove large accumulation of snow from the roof of the CER. | |
| 6436.html | 2017-01-17 05:06 | Replace power board for the ISS AA chassis. It will mean that the first and second loop power stabilisation will be off-line for a short while as the board is replaced. | |
| 6435.html | 2017-01-13 14:30 | Perform regular every-two-months Calibration Run on PCAL Y following procedure T1500063. Will take 3-4 hours on Teusday Maintenance. | 33392 |
| 6434.html | 2017-01-13 14:25 | Update and restart weather station IOCs to fix unsigned to signed conversion. | |
| 6433.html | 2017-01-13 09:23 | Increase power of SR3 oplev laser to address recent glitching. It is possible this could be a clue/cause for our recent range drop (no SR3 oplev damping, so unlikely, but possible). No viewports will be exposed during this work. Will wait for H1 to lose lock before performing this work. | |
| 6432.html | 2017-01-12 16:50 | Ensure all power cords are pushed firmly into sockets on all computers and switches. Investigate switch sw-ey-aux power alarm. EX, EY, MX and MY. | |
| 6431.html | 2017-01-12 09:16 | Update and restart the Beckhoff PLC code on h0vacmr and h0vacex to reflect the change to Gamma controllers for IP5 and IP12. Update MEDM screens. Requires DAQ restart for change of channel names. Will trip off HV at end X. | 33385 |
| 6430.html | 2017-01-11 12:56 | Troubleshoot ion pump at Y2-8, 250 meter cable will be tested, trying to find a short, controller will be powered cycled several times during test. Controller is located inside the vacuum support equipment room @ Y-End station. | 33388 |
| 6429.html | 2017-01-11 07:39 | Clear snow from Y arm and X arm. | 33147, 33148 |
| Previous W.P. | |||
| 6423.html | 2017-01-09 15:00 | Install PEM STS on to Modified BRS Y Mounting Plate to explore for better coherence and/or subtraction of tilt at EY. Installation on Tue during maintenance. STS will remain there for the foreseeable future. No new digital infrastructure should be needed. For details, see SEI aLOG 1090. | 33128 & 33387 |
| 6415.html | 2017-01-03 08:03 | Install HVAC Controls Upgrade. This will involve accessing VAV boxes and pulling new thermostat wire in the OSB. Out building work will be scheduled on a "as we can get access to them" basis. | 33385 |
