TITLE: 12/14 Day Shift: 16:00-00:00UTC (08:00-16:00 PDT), all times posted in UTC"

STATE Of H1: Observing at 75Mpc for 20.5hrs

SUPPORT: Patrick, Vern, Jenne

SHIFT SUMMARY: Quiet except for an EX ISI oscillation, the blends were changed and seemed to have made it better. The blends for EX only are now in the Quite_90s.

INCOMING OPERATOR: Corey

ACTIVITY LOG:

• 16:05 Ryan starting phone work
• 16:13 Ryan done
• 19:00 Bubba driving down the X arm to check for tumble weeds
• 19:32 Bubba back
• 19:34 Out of Observing
• 19:54 Observing
• 20:59 Betsy to Optics lab
• 22:11 Dale driving to woodshop (slowly) to drop off some wood
• 22:37 Dale back

WP--5649, ECR E1500456, II 1167.  See aLog 23853 and SEI log 887 and 890.

In preparation for updating the ISI per above, I'm updating our local model and src areas:

hugh.radkins@opsws1:models 0$ svn st -u
?                    gnd_sts_library_NEW.mdl
        *    12022   isi2stagemaster.mdl
Status against revision:  12272
hugh.radkins@opsws1:models 0$ svn up isi2stagemaster.mdl
U    isi2stagemaster.mdl
Updated to revision 12272.
 

hugh.radkins@opsws1:src 0$ svn st -u
        *    11156   WD_SATCOUNT.c
?                    ISIWD_GPS_veryOLD.c
        *            BLENDMASTER_ST1.c
        *    10437   .
Status against revision:  12272
hugh.radkins@opsws1:src 0$ svn up
U    WD_SATCOUNT.c
A    BLENDMASTER_ST1.c
Updated to revision 12272.

hugh.radkins@opsws1:bscisi 0$ svn up
U    ISI_CUST_CHAMBER_ST1_BLEND_ALL.adl
Updated to revision 12272.
hugh.radkins@opsws1:bscisi 0$
 

I've successfully rebuilt all the ISI platforms.  Will wait until tomorrow for install & restart

The SR3 cage servo has gone beyond its limit, and is saturating the output of the SR3 M2 coils. 

Back in November (aLog 23131) I put a check into the SR3_CAGE_SERVO guardian to let the operator know when it's close to the limit, and that it needed to be offloaded to the M1 actuators.  However, I only put in a check for if the servo is getting close to the positive limit.  As of 12 Dec around 18:00 UTC, we've been railed at the negative limit.  Ooops. 

Right now, SR3 is about 13 urad from the usual value in pitch (currently the OSEMs read 935, rather than the 922 that is the cage servo's setpoint), but the ASC seems to be fine with it. 

At the next opportunity, we'll offload SR3's alignment, and fix the guardian code so that it checks for both the positive and negative limits.

In the attached figure, you can see that SR3 is no longer at its nominal pointing, and that the cage servo's setting is no longer within +/-15,000 counts (which corresponds to +/-130k counts at the DAC).

Jim W., Evan H., Patrick T.

The end X ISI was ringing up. I took the IFO out of observing while Jim W. switched the blends. Both DOFs were on 45mHz and were switched to Quite_90. I accepted the SDF differences and returned the IFO to observing.

Screenshots of the accepted SDF differences and current blends are attached.

Out of observing from 19:34:07 to 19:54:02 UTC.

We've been cleaning up the scripts used to present the various calibration measurements against the model and each other.

A longer description of script locations and cleanup is LLO alog 23558.

This is basically the same as  LHO alog 21280, except comparing against the O1 model (H1DARMparams_1124827626.m) and trying to use more generic scripts for both sites.

The attached pdfs are results, and can also be found in the aligo calibration svn under:
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Results/

The first 3 all measurement types (Free swinging Michelson, ALS DIFF, PCAL) from 3 different days plotted against each other and the O1 model.

The second set of 3 are just the PCAL measurements against the model.

Attached is a plot summarising the behaviour of the front end laser pump diodes.
The oscillation in the output power has been observed before and I'm not sure
what it is caused by.  I had thought that it might be due to an oscillation in
the PID loop controlling the pump diode temperature, however it's not visible
in the TEC signals (D[1-4]TEC).

We still have a reasonable amount of headroom for the pump diodes.  At the
moment the diode current is ~51.5 A.  The maximum is 65 A.

O1 days 83-87. No restarts reported for this time period.

Planning for Tuesday Maintenance:

• Dust monitor plumbing at EY - Jeff B
• EX lights - Richard
• ISI Front End change for smoother blend switching and T240 ring up issue. This will require the platforms to be brought down and restarted. - Hugh
• CDS at the end stations cabling
• LVEA Laser SAFE in the morning

Activity Log: All Times in UTC (PT)

08:00 (00:00) Take over from Corey
08:46 (00:46) Reset L4C WD saturations on HAM3, ITMX, and the BS
16:00 (08:00) Turn over to TJ


End of Shift Summary:

Title: 12/14/2015, Owl Shift 08:00 – 16:00 (00:00 – 08:00) All times in UTC (PT)

Support:  
 
Incoming Operator: TJ

Shift Detail Summary: Locked in Observing mode for entire shift. Power at 21.8w, range 79Mpc. Wind is light breeze (4-7mph), seismic and microseism are improving. 

There is an oscillation showing up in the 20 minute ASAIR_B_RF90_I_NORM, and SUS-PRM_MC3_LOCK signals. There are also oscillations showing up in the Pitch and Yaw ASC Control strip tools.   

• TITLE: 12/14 Day Shift: 16:00-00:00UTC (08:00-16:00 PDT), all times posted in UTC"

• STATE Of H1: Observing at 80Mpc for 12.5hrs

• OUTGOING OPERATOR: Jeff b

• QUICK SUMMARY: Wind 10mph max, useism 0.6um/s, CW inj running, lights off, PSL 21.8W.
  

  In general a good first half of the shift. 
   
  In Observing mode for past 8 hours, with a couple of exceptions as noted during the Evening shift. The IFO appears to be functioning normally. Environmental conditions are good or improving except microseism, which remains elevated and shows signs of a decline.       

   08:46 (00:46) Reset L4C WD saturations on HAM3, ITMX, and the BS. 

Title:  12/14/2015, Owl Shift 08:00 – 16:00 (00:00 – 08:00) All times in UTC (PT)
	
State of H1: 08:00 (00:00), The IFO is in Observation mode. Power at 21.8W, range 78Mpc    

Outgoing Operator: Corey

Quick Summary:  IFO has been in observation mode for the past 5 hours, except as noted by the Evening shift. Wind is a light breeze (4 - 7mph). Seismic and microseism are still a bit elevated, but improving.  All appears to be normal.

TITLE:  12/13 EVE Shift:  00:00-08:00UTC (16:00-00:00PDT), all times posted in UTC     

STATE of H1:   4+ Hrs of locking (Almost 3hrs in Observing) at around 80Mpc.

Incoming Operator:  Jeff B.

Support:  Sheila On Phone at beginning of shift

Quick Summary:

We shook the PSL table and all chambers at the corner station except ITMY individually. By far the greatest up-conversion was at the BS. The figure shows that even a 20% increase in 1-80 Hz GS13 BLRMS produces bumps at higher frequencies. The up-conversion from injected peaks is not broadband like magnet domain changing noise, and is not a harmonic series like from scattering or saturation, but, instead produces peaks that look like intermodulation products.

Robert, Jordan

• useism still high, & winds are low.
• Performed an Initial Alignment & locked up H1 with Sheila's assistance over the phone.
• Robert has completed injection work for the night.
• H1 taken to Observing at 4:52utc with a range hovering between 75-80Mpc.

I have edited the ISC_LOCK guardian so that it now turns violin mode damping off before the interferometer reaches nominal low noise. This will hopefully allow us to collect ringdown data on the violin mode fundamentals.

Violin mode damping is still turned on as usual in BOUNCE_VIOLIN_MODE_DAMPING, but it now is turned off in the COIL_DRIVERS state. Thus the modes will still receive a few minutes of damping before DARM is switched to dc readout.

If this behavior needs to be reverted, there is a flag in the main() function of COIL_DRIVERS called self.turnOffViolinDamping which can be set to False.

Violin mode damping in full lock will be re-enabled once sufficient data have been collected.

HWInjReport 1129593617 - 1131828544

Performed a run spanning the time period from 1129593617 (Oct 23 2015 00:00:00 UTC) to 1131828544 (Nov 17 2015 20:48:47 UTC)

Parameters

The following parameters were used for this run:

• GPS Start Time = 1129593617 # Beginning of time span, in GPS seconds, to search for injections
• GPS End Time = 1131828544 # 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 = 0.012 # 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.
• Check CAL_RAW = True # Check CAL-INJ_ODC_CHANNEL_OUT_DQ channel in RAW frames.
• Report Normal = True # Include normal (IFO-coincident (network injections only), consistent, scheduled, and of known type) injections in report
• Report Anomalous = True # Include anomalous (non-IFO-coincident (network injections only), inconsistent, unscheduled, or of unknown type) injections in report
• Use CONDOR optimizations = True # Enable optimizations that assume execution on a CONDOR machine

Scheduled Injections

Only two injections were found to be scheduled during this period:

• CBC 1131397639.000 (coherentbbh0_1126259455_)
• CBC 1131405159.000 (coherentbbh0_1126259455_)

However, neither of these injections were found to actually occur within the examined time period.

Network and IFO Injections

There were no normal injections that occurred within the examined period. There were a number CAL-INJ resets, all single-IFO with the same curious pattern to the frame flags as denoted in the immediately prior HWInj report (https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=23485). There was a single-IFO burst injection in H1

BURST 1129673117.000 (H1)

with the only anomaly being that it is UNSCHEDULED. There was a single UNKNOWN injection in L1

UNKNOWN 1129673117.000 (L1)

This injection was confirmed to occur only within the CAL-INJ channel of RAW frames with the TRANSIENT bit indicating an injection but none of the specific injection-type bits, CBC, BURST, DETCHAR, or STOCHASTIC, indicating an injection. It was confirmed to not occur in ODC HOFT, ODC RDS, ODC RAW, or GDS HOFT frames.

Discussion of Anomalies

It is interesting that the single-IFO injections BURST 1129673117.000 (H1) and UNKNOWN 1129673117.000 (L1) are found to occur at the exact same time but within different IFOs. Even further, the fact the BURST injection in H1 is perfectly normal, other than being UNSCHEDULED, while the UNKNOWN injection in L1, in addition to being UNSCHEDULED, is inconsistent. HWInjReport currently does not check the HW bit or the CW bit in the CAL-INJ channel for RAW frames for the presence of injections; however, upon examining these bits directly, it was found that while the HW bit indicated an injection, along with the TRANSIENT bit, the CW bit did not indicate an injection (my first thought was that this may be a CW injection only occurring in L1). This means this was a truly UNKNOWN, UNSCHEDULED injection occurring only with L1. Given both injections occur at the exact same time and the L1 injection is a truly UNKNOWN type (practically a ghost injection, by the bits), it is likely this was intended to be a normal network injection; however either user-error or a catastrophic software error corrupted the proper setting of the bits.