• Title: 9/30 OWL Shift: 7:00-15:00UTC (00:00-8:00PDT), all times posted in UTC
  

• State of H1: Observation Mode at 75Mpc for the last 6hrs
  

• Shift Summary: I had one lockloss, but it came back up with relative ease. The RF Noise wasn't bothering me like in my previous shifts.

• Incoming Operator: Jeff B

• Activity Log:

• 07:43 - Lockloss
• 08:37 - Observing
• 08:58 - ETMY sat.
• 11:05 - ETMY sat.
• 11:48 - GraceDB Query Failure
• 12:07 - ETMY sat.
• ~12:30 - Restarted ext_alert.py (GraceDB Query successfull after)
• 13:23 - ETMY sat.
• 14:31 - ETMY sat.

Had one lockloss at 7:43 UTC, but brought it back up and into observing at 8:37. I'm still not sure what caused the lockloss.

Aside from that it is a quiet environment and everything seems to be humming along.

There was a GraceDB query failure with the last query at 11:48 UTC. I followed the instructions on this wiki and it started up just fine.

Back to Observing

Lockloss at 07:43 UTC.

No idea what may have caused it yet. There was an ITMX saturation, control loops looked normal, no seismic activity, all the monitors showed normal operation.

Title: 9/29 Eve Shift 23:00-7:00 UTC (16:00-24:00 PST).  All times in UTC.

State of H1: Observing

Shift Summary: One lockloss due to ITMy saturation.  One lockloss due measurements being made while LLO was down.  This resulted in a net of 16 minutes of lost coincident observing time.  Observing for all but ~1 hour of my shift.  RF45 has been stable the entire shift.  WInd and seismic quiet.

Incoming operator: TJ

Activity log:

23:25 Lockloss, ITMy saturation

23:26 Kyle and Gerardo back from EY

2:04 Out of observing while LLO is down so Sheila can make measurements

2:32 Lockloss due to measurements

3:00 Observing Mode

Today durring the maintence day we added the DHARD yaw boost to the guardian, after comparisons of glitch rates with it on and off (22043 21820).  

Now we can wait for some earthquakes to see what difference this makes. 

When DTT gets data from NDS2, it apparently gets the wrong sample rate if the sample rate has changed. The plot shows the result. Notice that the 60 Hz magnetic peak appears at 30 Hz in the NDS2 data displayed with DTT. This is because the sample rate was changed from 4 to 8k last February.  Keita pointed out discrepancies between his periscope data and Peter F's. The plot shows that the periscope signal, whose rate was also changed, has the same problem, which may explain the discrepancy if one person was looking at NDS and the other at NDS2. The plot shows data from the CIT NDS2. Anamaria tried this comparison for the LLO data and the LLO NDS2 and found the same type of problem. But the LHO NDS2 just crashes with a Test timed-out message.

Robert, Anamaria, Dave, Jonathan

Back to Observing Mode @ 3:03 UTC.

Since LLO went out of lock, Sheila asked if she could complete some measurements that she didn't finish during maintenance.  I gave her the OK and went to commissioning mode since we aren't losing any coincident data time.

I updated the GDS calibration correction filters today to reflect the bug fixes to the actuation and sensing time delays (see aLOG #22056).  Attached are plots of the residual and control correction filters, which include the updated time delays.  I have also attached plots that compare the h(t) spectra from the CALCS and GDS calibration pipelines and the spectrum residuals.  There is now a larger discrepency between CALCS and GDS because the time delays that were added to CALCS to bring the two closer together are now no longer as accurate.  Updates to the delays in CALCS may be coming as the differences are investigated more.

The new GDS calibration correction filters were generating using

create_partial_td_filters_O1.m

which is checked into the calibraiton SVN (r1560) under

Back to Observing @ 23:50 UTC.

Lockloss @ 23:25 UTC.  ITMy saturation.

Laura, Jordan

People have been decreasing the RF45 modulation index as a fix for extreme glitchiness associated with RF45 AM noise (described here among other places). I did a quick check to see if this has any noticeable effect on the rate of background triggers.  I made plots of omicron glitchgrams and trigger rates for times where the modulation index was decreased and for nearby times with modulation index at its nominal level and no other obvious issues (many plots ).  Attached are rate plots from some recent times.

For reference, the nominal plot is from lock # 31 and the decreased plot is from # 39 according to https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O1

Activity Log: All Times in UTC (PT)

15:00 (08:00) Take over from TJ
15:00 (08:00) Start of maintenance window
15:00 (08:00) Christina & Karen – Cleaning at End-Y
15:00 (08:00) Richard – Going into CER to work on 45Mhz driver
15:10 (08:10) Sprague – On site *Joe D. to escort through LVEA, Mid and End Stations
15:18 (08:18) Peter – Going into LVEA to work with Richard on 45Mhz driver
15:22 (08:22) Ken – Working on the solar power on X-Arm
15:22 (08:22) Leslie – Going to End-X and End-Y for cleaning work 
15:24 (08:24) Lockloss – Maintenance
15:25 (08:25) Hugh – Taking down HAM5 ISI for Rouge excitation fix
15:26 (08:26) Keita – Going into PLS to swap 45Mhz driver
15:28 (08:28) Filiberto & Manny – Taking photos of electronics racks at Mid-X
15:42 (08:42) Bubba – Going to End-Y chiller yard to replace vibration dampers on compressor
15:48 (08:48) Filiberto & Manny – Taking photos of electronics racks at Mid-Y
15:50 (08:50) Jim B. – Working on hardware injection computer
15:54 (08:54) Hugh – Going to both end stations to check HEPI fluid levels
15:55 (08:55) Betsy – Running charge measurements at both end stations
16:00 (09:00) Christina & Karen – Cleaning at End-X and End-Y NOTE: A lot of moths at End-Y
16:00 (09:00) Robert & Vinnie – at End-Y glitch hunting 
16:05 (09:05) Filiberto & Manny – Taking photos of electronics racks at End-Y
16:07 (09:07) Mitch – In LVEA to place signage – will open receiving roll-up door
16:09 (09:09) Betsy – In LVEA to help Mitch and hunt for parts
16:09 (09:09) Jodi – In LVEA to check 3IFO stuff
16:10 (09:10) Jason & Peter – Moving PSL equipment from OSB to LSB
16:10 (09:10) Filiberto & Manny – Finished at End-Y – heading for the LVEA
16:13 (09:13) Keita – Out of the PSL
16:30 (09:30) Hugh – Shutdown dust monitor at both end stations
16:30 (09:30) Mitch – Finished in the LVEA
16:30 (09:30) Filiberto & Manny – In LVEA by HAM3 taking photos of electronics racks
16:32 (09:32) Hugh – Checking CS HEPI fluid levels 
16:33 (09:33) Jodi – Out of the LVEA 
16:35 (09:35) Betsy – Out of the LVEA
16:37 (09:37) Filiberto & Manny – Out of the LVEA
16:45 (09:45) Hugh – Delivering 3IFO parts to storage in the LVEA
16:50 (09:50) Jodi – Taking tour through LVEA
16:55 (09:55) Jason & Peter – Finished moving PSL parts
17:00 (10:00) Mitch – Moving (forklift) load from LSB to VPW
17:10 (10:10) Add 175ml water to PSL crystal chiller
17:12 (10:12) Kyle & Joe – Taking 1-Ton and trailer to near End-X to recover leak detector 
17:18 (10:18) Christina & Karen – Cleaning in the LVEA
17:30 (10:30) Bubba & John - Going to End-X chiller yard to replace vibration dampers on compressor
17:31 (10:31) Beverage service on site to check the vending machines
17:35 (10:35) Corey & Patrick – Going to sweep End-Y
17:39 (10:39) Gerardo – Delivering batteries to near both end stations
17:46 (10:46) Vinnie & Jordan – Going to both end stations to install PEM equipment
17:47 (10:47) Paradise Water on site
17:47 (10:47) PraxAir truck leaving site (was at Mid-X)
17:52 (10:52) Ken – Going to work on solar panels on Y-Arm
18:05 (11:05) Sudarshan – Taking TFs at End-X 
18:12 (11:12) Karen & Christina – Out of the LVEA
18:15 (11:15) Corey & Patrick – Going to sweep End-X
18:34 (11:34) Betsy & Cheryl – Sweeping the LVEA
18:45 (11:45) Gerardo – Going to End-X to check annulus gages
18:45 (11:45) John & Bubba – Finished with chiller work – Checking gauges in End-X
18:48 (11:48) Richard – In LVEA to shut off wireless APs
20:06 (13:06) IFO Locked at NOMINAL_LOW_NOISE 22.5W, 62Mpc
20:32 (13:32) Lockloss – See aLOG 22073
20:41 (13:41) Kyle & Joe – Out to X2A and Mid-X
20:42 (13:42) Daniel – Going into CER
20:47 (13:42) Carpet Contractor on site to meet with Bubba
20:47 (13:47) Daniel – Out of CER
22:11 (15:11) IFO locked at NOMINAL_LOW_NOISE, 22.5W, 75Mpc
22:18 (15:18) Set Intent Bit to Observing
23:00 (16:00) Turn over to Travis
  

Shift Summary:
Title: 09/29/2015, Day Shift 16:00 – 23:00 (08:00 – 16:00) All times in UTC (PT)

Support: Sheila, Hugh, Betsy

Incoming Operator: Travis

Shift Summary: 
- 15:00 IFO locked. Observing Mode set to Maintenance. 
- 15:24 Lockloss – Maintenance
- 16:30 Turnoff dust monitors at both end stations
- 17:05 Reset HAM5 L4C Saturation WD
-19:00 Corey & Patrick – Sweep of end stations
-19:00 Cheryl & Betsy – Sweep of LVEA

Since LLO had already gone down (we think for maintence) TJ let me start some maintence work that needs the full IFO locked.  at about 14:32 UTC Sept 29th we went to commisioning to start running the A2L script as described in WP # 5517.

Now that the multi-processing version of HWInjReport is operational and returning results (multi-processing code is an absolute bear!), this is the first of daily reports of analysis of output from HWInjReport. Currently, HWInjReport still has to be run manually and requires one to checkout the current schedule file from the SVN (currently at https://svn.ligo.caltech.edu/svn/dac/hwinj/Details/tinj/schedule; if this has changed, please let me know so I can modify the run script appropriately). Automatic execution of HWInjReport is soon to come.  I've attached copies of the output report file and the schedule file used.  NOTE: the report file is very wide due to the number and size of the columns in the network injections tables of the report.  To examine the report, you will need to either zoom out or change the font size in your browser/text editor to 10pt or less (I'm looking into compressing the columns in the network injections tables in future updates).

The daily run performed with the following parameters:

GPS Start Time = 1127163296    # Beginning of time span, in GPS seconds, to search for injections
GPS End Time = 1127249696    # Ending of time span, in GPS seconds, to search for injections
Check Hanford IFO = True    # Check for injections in the Hanford IFO frame files.
Check Livingston IFO = True    # Check for injections in the Livingston IFO frame files.
IFO Coinc Time = 0.01    # Time window, in seconds, for coincidence between IFO injection events.
Check ODC_HOFT = True    # Check ODC-MASTER_CHANNEL_OUT_DQ channel in HOFT frames.
Check ODC_RAW = True    # Check ODC-MASTER_CHANNEL_OUT_DQ channel in RAW frames.
Check ODC_RDS = True    # Check ODC-MASTER_CHANNEL_OUT_DQ channel in RDS frames.
Check GDS_HOFT = True    # Check GDS-CALIB_STATE_VECTOR channel in HOFT frames.
Report Normal = True    # Include normal (coherent, consistent, and scheduled) injections in report
Report Anomalous = True    # Include anomalous (incoherent, inconsistent, or unscheduled) injections in report

NOTE: coherent -> coincident.  Missed changing that in the code where it outputs the report.

The schedule file only has injections spanning 1125280499 - 1126450499.  This is outside the range of times checked by HWInjReport, so there are no occurring or non-occurring scheduled injections reported.

No normal injections, as defined above for HWInjReport, were reported for the network injections.  All injections found were reported as UNSCHEDULED, and all injections occurring were reported as CBC injections.

Two H1-L1 coincident injections were found: CBC 1127175853.757(H1), 1127175853.764(L1) and CBC 1127179822.757(H1), 1127179822.764(L1).  Both injections were reported as UNSCHEDULED but, otherwise, had no other reported anomalies.

H1 had only 1 single-IFO injection, CBC 1127173426.757 (the report file shows 3, but only 1 is actually an H1-only injection.  There is apparently a bug due to the multi-processing code that is not propagating the association of the other 2 injections with their corresponding L1 injections. It's basically a problem of how memory works for a multi-processing environment.)

L1 had 5 single-IFO injections:

• CBC 1127162126.764
• CBC 1127162532.764
• CBC 1127162961.764
• CBC 1127181622.764
• CBC 1127183422.764

The first three injections have the anomaly that they occur in the ODC hoft and GDS hoft frames but not in the ODC raw or ODC rds frames. The remaining 2, other than being UNSCHEDULED, had no other anomalies reported.

ADDENDUM: I was able to successfully fix the data propagation bug.  I've attached a copy of the resulting "fixed" report that correctly shows the single-IFO injections for H1 and L1.