An alog describing the new GDS calibration filters has been posted to the LLO alog #22939.
The plots being presented here were made by an upconversion/downconversion finding tool called NCOR. An explanation of the tool and how to interpret the resulting plots can be found HERE.
To make the plots presented in this post all "analysis-ready" lock times of O1 have been included. That is all data from Sept. 14th - Nov. 22nd when the "analysis-ready" flag was active. Each point in these plots is 32 seconds of data. In general all 60 Hz harmonics have been notched out, as well as the violin mode peaks in the higher frequency bands. Robert Schofield has given me valuable help with the analysis, including channels to look at, and the list of channels searched at both sites can be found here: LHO LLO .
Some of the most interesting upconversion bands are shown below:
.1 - .3 Hz -> 55 - 65 Hz
.1 - .3 Hz -> 85 - 110 Hz
.1 - .3 Hz -> 50 - 200 Hz
.3 - 1 Hz -> 55 - 65 Hz
.3 - 1 Hz -> 10 - 50 Hz
.3 - 1 Hz -> 85 - 110 Hz
.3 - 1 Hz -> 50 - 200 Hz
10 - 30 Hz -> 85 - 110 Hz
30 - 50 Hz -> 85 - 110 Hz
30 - 50 Hz -> 121 - 200 Hz
30 - 50 Hz -> 1000 - 2000 Hz
The directories with the full results, including all band-pairings, can be found here: LHO LLO .
I did search for downconversion as well (from the 700 - 900 Hz band and the 700 - 1200 Hz band) but I did not find too much of interest. Those results can be seen in the full results directories. If anyone has any specific frequency bands or channels they would like looked at I am happy to analyze them.
TITLE: 11/23 Owl Shift 08:00-16:00UTC (00:00-08:00 PST), all times posted in UTC
STATE Of H1: Observing
SUPPORT:
LOCK DURATION:
INCOMING OPERATOR: Travis
END-OF-SHIFT SUMMARY: Other than one lockloss, it's been a quiet night. Hardly any wind. No noticable seismic activity in EQ band. Useism ~2e-1 um/s.
ACTIVITY LOG: See alog23653 and comments therein.
In response to the behaviour of the ISS diffracted power at Livingston (https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=22928) the attached plots are generated. In short, the large fluctuations seen at Livingston do not appear to be present.
Cause is unclear. USGS reported a 4.9M earthquake in South of Africa at 11:18 UTC. Terramon predicted the R-wave arrival time to be 4:40 UTC with 0.0404561 um/s. That shouldn't have dropped us out of lock though. ASC signal and tidal looked stable on the FOM before the lockloss. Wind speed ~2mph.
Relocked and Observing again at 12:35 UTC. The butterfly mode near 2500Hz amplitude is currently at 2e-16 m/sqrt(Hz) but seems to be coming down slowly. I had to touch COMM VCO and DIFF OFFSET to maximize LSC TRX and Y normalized transmission during FIND_IR. And had to engage ISS 2nd loop by hand several times before succeeded.
The BNS range has been slowly dropping since about an hour ago. I know we lose some range due to the local traffic but losing 10 Mpc seems a bit much....
11/23 OWL Shift 08:00-16:00 UTC (00:00-08:00 PST)
Out going Ops: Patrick
Quick Summary: I noticed DHARD P amplitude was higher than usual relative to others but nothing seems to be going wrong. Turns out the scaling on the FOM has changed, probably when Patrick restarted the FOM on Friday (alog23598). I changed both DHARD P and Y scaling to (-4000,4000) just for a peace of mind.
TITLE: 11/22 [EVE Shift]: 00:00-08:00 UTC (16:00-00:00 PDT), all times posted in UTC STATE Of H1: Observing @ ~ 78 MPc. SHIFT SUMMARY: Had some trouble relocking after the earthquake again. Three SUS ETMY saturation since. No evidence of RF45 noise. Seismic and winds unchanged. INCOMING OPERATOR: Nutsinee ACTIVITY LOG: 02:21 UTC Rick S. leaving site
There is a blue box with the number 1 in it under the CRC column for H1ISIHAM3 on the O1 CDS detailed overview. I'm not certain what this means. Screenshot attached. Relocking sequence: Had to move both ETM and TMS for both arms to lock on green. Took a long time. Stopped in CHECK_IR. IR not really found. Adjusted H1:ALS-C_COMM_VCO_CONTROLS_SETFREQUENCY and H1:ALS-C_DIFF_PLL_CTRL_OFFSET. Modes look bad and flashes are low in power on LOCK_DRMI_1F Starting initial alignment Had to adjust ETMS to lock arms on green Moved PR3 to slightly improve COMM beatnote Done initial alignment Had to adjust ETMY in Pitch to lock on green Stopped at ENGAGE_ASC_PART3. Lowered diffracted power. Had to rerequest READY_FOR_HANDOFF for OMC_LOCK node at DC_READOUT_TRANSITION. Got 'wrong node?' notification. Rerequested READY_FOR_HANDOFF. No change. Put OMC_LOCK node to auto It went back through the sequence and got to READY_FOR_HANDOFF The ISC_LOCK guardian went on. While it was at INCREASE_POWER I put the OMC_LOCK node back to managed. Got 'node OMC_LOCK: STOLEN (by: USER)' notifications on ISC_LOCK guardian. Stopped at engage ISS second loop Engaged ISS second loop by hand Attempt to remanage OMC_LOCK node: Put ISC_LOCK node to manual Selected INIT for ISC_LOCK node Got oh no it is unlocked voice, but it wasn't Selected ENGAGE_ISS_SECOND_LOOP for ISC_LOCK node Put ISC_LOCK node back to auto Requested NLN for ISC_LOCK node Made it to NLN!
Spike to ~ 0.8 um/s in the earthquake band.
Still locked and observing. No change in wind or seismic. A number of SUS ETMY saturations. These do not appear to be reflected in RF45 noise. The verbal alarms script is indicating CS temperature is low, but I don't see any alarms on the FMCS overview.
The strip chart was periodically stopping and starting.
TITLE: 11/22 [EVE Shift]: 00:00-08:00 UTC (16:00-00:00 PDT), all times posted in UTC STATE Of H1: Observing @ ~ 76 MPc. OUTGOING OPERATOR: Travis QUICK SUMMARY: From the cameras: The lights are off in the LVEA. The lights are off in the PSL enclosure. The lights are off at mid X. I can not tell if the lights are on or off at mid Y. The lights are off at end X. The lights are off at end Y. The 0.03 - 0.1 Hz (earthquake) seismic band is between ~ 0.01 and 0.04 um/s. The 0.1 - 0.3 Hz (microseism) seismic band is between ~ 0.09 and 0.4 um/s. The winds are between ~ 0 and 10 mph. The ISI blends are on Quite_90. From pinging: CDS WAP is off at the LVEA. CDS WAP is on at mid X. CDS WAP is on at mid Y. CDS WAP is off at end X. CDS WAP is off at end Y.
Title: 11/22 Day Shift 16:00-24:00 UTC (8:00-16:00 PST). All times in UTC.
State of H1: Observing
Shift Summary: Locked for my entire shift, going on 21 hours for this lock. 6 ETMy saturations, none related to RF45 glitching.
Incoming operator: Patrick
Activity log: Took ETMx photos with Rick with PCal camera.
Locked in Observing the entire shift so far. A couple of ETMy saturations, but not related to any RF45 glitching.
O1 day 65
model restarts logged for Sat 21/Nov/2015 No restarts reported
GRB alert @ 17:01 UTC. Unfortunately, LLO is still down.
Activity Log: All Times in UTC (PT) 08:00 (00:00) Take over from Patrick 08:50 (00:50) GRB alert 09:15 (01:15) Air handler alarms for CS zone 1B and zone 4 – Duct temperatures 97.3F and 99.41F 12:10 (04:10) GRB alert 16:00 (08:00) Turn over to Travis End of Shift Summary: Title: 11/21/2015, Evening Shift 08:00 – 16:00 (00:00 – 08:00) All times in UTC (PT) Support: None needed Incoming Operator: Travis Shift Detail Summary: 08:50 (00:50) GRB alert – LHO in Observing; LLO down due to environmental issues. Ignored alarm. 12:10 (00:10) GRB (E202631) – LHO in Observing; LLO down due to FE problem. Ignored the alert. Generally a good shift. IFO in Observing mode for ~ 12 hours. Range has been around 78Mpc. Other than cold and fog, weather is good and seismic has been stable for the entire shift. Only one ETM-Y saturations and no problems with RF45. No additional temperature related alarms in the corner or end stations.
12:10 (04:10) Received GBR alert (E202631). LHO in Observing mode. Spoke with LLO; their FE is down and they are working on recovery. Ignored the alert.
