Commissioning work finished up at 0012UTC and we are back to observing.

[Rick, Dripta, Laurence, Niko]

We performed an end station calibration at EX yesterday. The measurement procedure/log is attached, beam alignment photo will be attached in a comment and data quality analysis will follow.

[Niko, Laurence, Rick, Dripta]

Last Tuesday we went down to EY and performed an end station calibration (apologies for the late status report). The measurement procedure/log and a picture of the beam alignment on the RX integrating sphere aperture are attached. Data quality analysis will follow.

J. Kissel

Dave have recently found that there are a small collection of EPICs settings that are both NOT touched by Guardian and NOT monitored in the SDF system (see O3SDFReview in the CDS wiki). Today, during the commissioning period, I reviewed and either monitored or justified why to leave them unmonitored for those channels in the CAL models. In summary -- very little change, some channels that should be monitored are now monitored, and others are known that they should be not monitored.


CAL INJ
    Now monitored
        H1:FEC-42_BURT_RESTORE     (button to demand a burt restore of safe.snap during start up. shouldn't be changing, and isn't even available to change on GDSTP screen. Should be monitored)
        H1:FEC-42_DACDT_ENABLE     (button to switch on the DAC doutone readback in to the 31st channel of the ADC )

    Leaving unmonitored
        H1:CAL-INJ_TINJ_$(ENDED/PAUSE/START/STATE/TYPE)      (actually readbacks written to by TINJ guardian node about injection information. should remain unmonitored.)
        H1:CAL-INJ_TRANSIENT_$(GAIN/TRAMP)                   (used to turn OFF hardware injections, which happens during a GRB alert, and potentially during observe)
        H1:CAL-INJ_TINJ_ENABLE                               (used to turn OFF hardware injections, which happens during a GRB alert, and potentially during observe)

CAL CS
    Now Monitored 
        H1:CAL-CS_TDEP_SUS_$(L1,L2,L3)_LINE_END_SW           (toggle switch that determines which ETM is being used to inject calibration lines. Should not be changing and should be monitored.)

J. Kissel

Dave have recently found that there are a small collection of EPICs settings that are both NOT touched by Guardian and NOT monitored in the SDF system (see O3SDFReview in the CDS wiki). Today, during the commissioning period, I reviewed and either monitored or justified why to leave them unmonitored for those channels in the SUS models. Below are detailed notes, but the grand summary is that most of those channels can be monitored and were not, to-date, because they were 
    - old defunct channels that are no longer in use and don't impact the IFO, 
    - controlled by another settings channel via the front-end filter modules with control, or 
    - changing them would not affect the IFO in any substantial way. 
The remaining channels that I'm leaving unmonitored are 
    - the OPTICALIGN_$(P/Y)_OFFSET channels which are used for alignment and will necessarily be different from lock stretch to lock stretch
    - the HWWD_STATE channels on the QUADs which are actually readbacks not settings, and are known to be glitchy
    - the violin mode damping filter settings, which can be tuned during observation.

SUS TMSX/Y
    Now monitored.
        H1:SUS-TMSX/Y_COMMISH_$(MESSAGE/STATUS)    (old defunct dummy EPICs variables to indicate that the suspension was in used for aLIGO install testing and commissioning. Doesn't matter at all, so we'll monitor it just to make this check happy.) 
        H1:SUS-TMSX/Y_M1_OPTICALIGN_P/Y_TRAMP      (won't affect anything if changed, but shouldn't be changing, Monitor it just to make the check happy.)
        H1:SUS-TMSX/Y_M1_TEST_P/Y_TRAMP            (won't affect anything if changed, but shouldn't be changing, Monitor it just to make the check happy.)
    Leaving unmonitored 
        H1:SUS-TMSY_M1_OPTICALIGN_P/Y_OFFSET       (continually changes from observe stretch to observe stretch for optical alignment tuning)

SUS SR2
    Now monitored.
        H1:SUS-SR2_BIO_M3_$(OSEMDOF)_CTENABLE     (switches the inputs to coil drivers from DAC request to analog input. We ALWAYS want these ON.)
        H1:SUS-SR2_BIO_M3_$(OSEMDOF)_MSDELAYOFF   (addes a delay to the digital compensation half of turning OFF coil driver switchable frequency response. We want these fixed and monitored.)
        H1:SUS-SR2_BIO_M3_$(OSEMDOF)_MSDELAYON    (same as above, but for turning ON the coil driver switchable frequency response.)
        H1:SUS-SR2_BIO_M3_$(OSEMDOF)_STATEREQ     (master control variable for switching the coil driver frequency response. We want these fixed and monitored.)
        H1:SUS-SR2_COMMISH_MESSAGE                (old defunct dummy EPICs variable to indicate that the suspension was in used for aLIGO install testing and commissioning. Doesn't matter at all, so we'll monitor it just to make this check happy.)
        H1:SUS-SR2_M3_EUL2OSEM_TRAMP              (ramp time for the M3 EUL2OSEM matrix. wouldn't affect anything to have it change, but monitor it just to make this check happy.)
        H1:SUS-SR2_M1_LOCK_P/Y_SW1S_INPT          (formerly guardian controlled filter module in filter bank, but shouldn't be changing when in observe, so we want monitored. )
        H1:SUS-SR2_M3_EUL2OSEM_SETTING_$(ROW)_$(COLUMN)  (M3 EUL2OSEM matrix values *to be loaded if load was hit*. Should be fixed in observe anyway, so we want monitored.)
    Leaving unmonitored
        H1:SUS-SR2_M1_OPTICALIGN_P/Y_OFFSET (continually changes from observe stretch to observe stretch for optical alignment tuning)


SUS PR3
    Leaving unmonitored
        H1:SUS-PR3_M1_OPTICALIGN_P/Y_OFFSET       (continually changes from observe stretch to observe stretch for optical alignment tuning)

SUS OMC
    Now Monitored 
        H1:SUS-OM3_M1_TEST_P/Y_SW1S_OFFS          (generally unused and off. Would be used for misalignment offsets. Monitor it just to make the check happy.)

SUS MC2
    Now Monitored 
        H1:SUS-MC2_BIO_M3_$(OSEMDOF)_CTENABLE     (switches the inputs to coil drivers from DAC request to analog input. We ALWAYS want these ON.)
        H1:SUS-MC2_BIO_M3_$(OSEMDOF)_MSDELAYOFF   (addes a delay to the digital compensation half of turning OFF coil driver switchable frequency response. We want these fixed and monitored.)
        H1:SUS-MC2_BIO_M3_$(OSEMDOF)_MSDELAYON    (same as above, but for turning ON the coil driver switchable frequency response.)
        H1:SUS-MC2_BIO_M3_$(OSEMDOF)_STATEREQ     (master control variable for switching the coil driver frequency response. We want these fixed and monitored.)
        H1:SUS-MC2_M3_EUL2OSEM_SETTING_$(ROW)_$(COLUMN)  (M3 EUL2OSEM matrix values *to be loaded if load was hit*. Should be fixed in observe anyway, so we want monitored.)
    Leaving unmonitored
        H1:SUS-MC2_M1_OPTICALIGN_P/Y_OFFSET (continually changes from observe stretch to observe stretch for optical alignment tuning)

SUS ITMY
    Now Monitored
        H1:SUS-ITMY_L2_DRIVEALIGN_$(P/Y)2L_GAIN    (A2L gains. shouldn't be changing during observe anymore, a relic of when we weren't constantly controlling the spot positions on the test masses. Also, not replaced by $(P/Y)2L_SPOT_GAIN, which is already monitored.)
        H1:SUS-ITMY_$(L1/L2/L3)_CAL_LINE_$(CLKGAIN,COSGAIN,SINGAIN,FREQ,TRAMP) (parameters for calibration line injection points. For ITMs we want these OFF and monitored.)
        H1:SUS-ITMY_BIO_L3_$(OSEMDOF)_SW           (Master switch for ESD driver state. Should be monitored.) 

        H1:SUS-ITMY_BIO_L3_MSDELAYOFF              (same as SR2 and MC2.)
        H1:SUS-ITMY_BIO_L3_MSDELAYON
        H1:SUS-ITMY_BIO_L3_STATEREQ 

    Leaving unmonitored
        H1:SUS-ITMY_HWWD_STATE  (glitchy channel reflecting the status of the HWWD. If monitored, will constantly and errantly kick us out of observing)
        H1:SUS-ITMY_M1_OPTICALIGN_P/Y_OFFSET (continually changes from observe stretch to observe stretch for optical alignment tuning)
        H1:SUS-ITMY_L2_DAMP_MODE??_$(GAIN,TRAMP) (violin mode damping filter settings, continually played with by guardian during observe.)

    Still under question (why isn't this touched by the guardian?):
        H1:SUS-ITMY_L2_DAMP_MODE16_SW1S            (filters for control of MODE16 violin mode damping filter. Maybe this mode is no longer in used, or not touched by guardian? Seems like it should be,)

SUS ITMX
    Now Monitored
        H1:SUS-ITMX_M0_LOCK_$(P/Y)_TRAMP           (won't affect anything if changed, Monitor it just to make the check happy.)
        H1:SUS-ITMX_L2_DRIVEALIGN_$(P/Y)2L_GAIN    (A2L gains. shouldn't be changing during observe anymore, a relic of when we weren't constantly controlling the spot positions on the test masses. Also, not replaced by $(P/Y)2L_SPOT_GAIN, which is already monitored.)
        H1:SUS-ITMX_$(L1/L2/L3)_CAL_LINE_$(CLKGAIN,COSGAIN,SINGAIN,FREQ,TRAMP) (parameters for calibration line injection points. For ITMs we want these OFF and monitored.)
        H1:SUS-ITMX_BIO_L3_$(OSEMDOF)_SW           (Master switch for ESD driver state. Should be monitored.) 
        H1:SUS-ITMX_BIO_L3_MSDELAYOFF              (same as SR2, MC2, and ITMY.)
        H1:SUS-ITMX_BIO_L3_MSDELAYON
        H1:SUS-ITMX_BIO_L3_STATEREQ 

    Leaving unmonitored
        H1:SUS-ITMX_HWWD_STATE                     (glitchy channel reflecting the status of the HWWD. If monitored, will constantly and errantly kick us out of observing)
        H1:SUS-ITMX_L2_DAMP_MODE??_$(GAIN,TRAMP) (violin mode damping filter settings, continually played with by guardian during observe.)

SUS IM
    Now Monitored
        H1:SUS-IM$(1-4)_COMMISH_MESSAGE            (old defunct dummy EPICs variable to indicate that the suspension was in used for aLIGO install testing and commissioning. Doesn't matter at all, so we'll monitor it just to make this check happy.)

    Leaving unmonitored
        H1:SUS-IM4_M1_OPTICALIGN_P/Y_OFFSET        (continually changes from observe stretch to observe stretch for optical alignment tuning)

SUS HTTS
    Now Monitored
        H1:SUS-RM$(1/2)_COMMISH_MESSAGE           (old defunct dummy EPICs variable to indicate that the suspension was in used for aLIGO install testing and commissioning. Doesn't matter at all, so we'll monitor it just to make this check happy.)

    Leaving Unmonitored
        H1:SUS-RM1_M1_OPTICALIGN_P_OFFSET          (continually changes from observe stretch to observe stretch for optical alignment tuning)

SUS ETMY
    Now Monitored
        H1:SUS-ETMY_L2_COILOUTF_$(OSEMDOF)_TRAMP   (won't affect anything if changed, but shouldn't be changing, Monitor it just to make the check happy.)
        H1:SUS-ETMX_L2_DRIVEALIGN_$(P/Y)2L_GAIN    (A2L gains. shouldn't be changing during observe anymore, a relic of when we weren't constantly controlling the spot positions on the test masses. Also, not replaced by $(P/Y)2L_SPOT_GAIN, which is already monitored.)

    Leaving unmonitored
        H1:SUS-ETMY_HWWD_STATE                     (glitchy channel reflecting the status of the HWWD. If monitored, will constantly and errantly kick us out of observing)
        H1:SUS-ETMY_L2_DAMP_MODE??_$(GAIN,TRAMP)   (violin mode damping filter settings, continually played with by guardian during observe.)

SUS ETMX
    Now Monitored
        H1:SUS-ETMX_L2_CAL_LINE_TRAMP              (won't affect anything if changed, but shouldn't be changing, Monitor it just to make the check happy.)

    Leaving Unmonitored
        H1:SUS-ITMX_L2_DAMP_MODE??_$(GAIN,TRAMP)   (violin mode damping filter settings, continually played with by guardian during observe.)

SUS BS
    Now monitored
        H1:SUS-BS_COMMISH_MESSAGE                 (old defunct dummy EPICs variable to indicate that the suspension was in used for aLIGO install testing and commissioning. Doesn't matter at all, so we'll monitor it just to make this check happy.)

    Leaving unmonitored
        H1:SUS-BS_M1_OPTICALIGN_P/Y_OFFSET         (continually changes from observe stretch to observe stretch for optical alignment tuning)

The Pcal reciever-side photodiode at EX is showing unwanted spikes at various frequencies. Jeff helpfully pointed out that these changes started after we performed an end station calibration during maintenance yesterday. Looking at the spectra of the transmitter-side photodiode and reciever-side photodiode before and after maintenance (pcalx_spec.pdf), we can see that there is indeed a significant difference, and the fact that we see it in both photodiodes tells us that these changes are happening inside the transmitter module.

Looking average time series of both photodiodes before and after maintenance (pcalx_trends.png) shows that the voltage output of these sensors is much less stable after we perform the end station calibration.

Given that the voltage on the photodiodes (and hence the laser power) appears to to be unstable and larger than before, I would hazard a guess that the issue is with the Optical Follower Servo and not with the laser dying. However, I'm not sure how our work yesterday would have caused this. We will continue to investigate.

TITLE: 06/12 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Commissioning
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    Wind: 10mph Gusts, 6mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.08 μm/s
QUICK SUMMARY: Commissioning efforts currently ongoing. Calm environment should help.

TITLE: 06/12 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Corrective Maintenance
INCOMING OPERATOR: TJ
SHIFT SUMMARY:

First 90min of shift was for Beckhoff recovery.  Then it was fairly normal business afterwards.  Dropped out of Observing for Weekly Wed Calibration measurement followed by Commissioning which is still ongoing.

LOG:

• 13:20 Lockloss & Corner station beckhoff goes down
  • 16:35 Fil & Patrick return after swapping in new hardware (i.e. chassis).  Now checking to see how things look.
  • 16:41 Got the "OK to go" from Patrick & Fil
  • 16:44 - 18:20 Locking & getting back to OBSERVING (see earlier alogs for specifics)
• 14:55 Cleanroom garb (Jeff)
• 16:29 Filling PSL chiller (Corey)
• 16:44 PNNL Intern tour (Jeff B)
• 19:52 H2 Elec Room 3IFO work (Fil)
• 19:55 H2 Elec Room work (Patrick)
• 20:00 Out of OBSERVING for:  Weekly Wed Calibration measurement (Jeff K, Corey)
  • Instructions for these measurements are here.
• 20:08-20:37 Optics Lab clean-up (Travis, Betsy)
• 20:52 Put new CDS Overview on video2 with updated Beckhoff/Slow Controls area.
• 20:57 Switched to COMMISSIONING (for Sheila/Georgia)
• 21:15 Gerardo to MY to get model # for Hilti.
• 22:03 -22:14 Seismon not updating momentarily (see earlier alog)

~22:03 Seismon:  Jenne noticed DIAG_MAIN gave note about "Seismon system not updating"

• On Seismon medm, there was a SEISMON Is Dead red box, but along with this, the "Keep Alive" was flashing away.
  • The Sys Time (GPS) time was also frozen.
• Gave a call to LLO to check on their status (if they were good, was going to have them give us warnings for any EQs), but they (JoeH) had a similar issue.
• Brought this to Dave B's attention, but....
• At 22:14 SEISMON came back on its own.  (Looking at a recent email from Jim W, think this was a code issue due to a time hiccup and it came back on its own.)
• Will send an email to Jim for his notes.

C. Gray, J. Kissel

With Corey's help, we gathered regular calibration measurements of the sensing function today. This is the second sensing function measurement since we've (now permanently) powered up from ~35 W to ~37 W input into the IFO (see LHO aLOG 49783). Time dependent correction factors for the optical plant have shown a corresponding change -- namely that the optical gain has dropped from 0.98 to 0.96 the reference time w.r.t. to the optical gain at the reference time. The cavity pole appears to have improved a bit, changing from ~400 to 406, though this may have more to do with spot position change that corresponded to the power up than the power-up itself. (Both of these, compared against the input laser power, are shown in the attached ~1 week trend. Where the data is noisy, we are not observing, so mentally filter those out when you read the plot.)

Also, to continue the investigation as to whether the apparent acausality of detuned spring frequency response is nonsense or not (i.e. if its a result of L2A2L coupling in the actuator, rather than anything representative of what's really happening the with sensing function), we took the standard sensing function measurement set, a DARM OLG TF and a PCAL to DARM_IN1 sweep. But -- we gathered the PCAL sweep both with what we've been using as reference -- PCAL Y -- and also a sweep with PCAL X. The idea being, that if the PCAL spots are differently centered with respect to the IFO beam between the two PCAL excitations, the reported interferometer response may be different. This is not as good, but necessarily easier than moving the interferometer spot positions. For future analysis, it should be known that the A2L_SPOT position gains are identical for EX and EY, corresponding to a physical offsets of -16 mm in PIT (down, -Vertical) and 13 mm in YAW (in the +Trans direction).

Today's data was gathered by Corey, using instructions from LHO aLOG 49165, and he's saved those standard measurements are here:
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O3/H1/Measurements/FullIFOSensingTFs/
    2019-06-12_H1_DARM_OLGTF_LF_SS_5to1100Hz_15min.xml      # 1 / (1+G)
    2019-06-12_H1_PCALY2DARMTF_LF_SS_5t1100Hz_10min.xml     # C / (1+G) as measured by PCAL Y 

The bonus measurements I grabbed are as follows:
    2019-06-12_H1_OMCDCPDSUM_to_DARMIN1.xml   # For converting from DARM_IN1 counts to mA on the DCPDs (roughly)
    2019-06-12_H1_PCALY2DARMTF_BB.xml         # For comparison with GDS

    2019-06-12_H1_PCALX2DARMTF_LF_SS_5t1100Hz_10min.xml     # C / (1+G) as measured by PCAL X
    2019-06-12_H1_PCALX2DARMTF_BB.xml         # for comparison with GDS

Leading up to today, here are the observation intent / analysis ready segments that are at 37W instead of 35W:
    2019-Jun-06 01:24:34 UTC to 08:16:22 UTC   -=- Brief observation segment at 37 W
    2019-Jun-10 23:55:38 UTC onward            -=- Start of continuous operation at 37 W

Note that we don't simply increase the laser power -- we also tune the angular and thermal control systems to account to compensate for this new amount of power in the IFO. Although we do not need to make any explicit changes to the DARM control loop, there will be cross-couplings and frequency response changes -- especially in the sensing function -- that will be impacted by these changes. The most obvious are what's mentioned above -- the 2% change in optical gain, and the slight increase in cavity pole frequency. In real time, we're sort of flying blind regarding the detuned SRC optical spring frequency, but analysis of these measurements should hopefully reveal interesting changes there as well.

Data processing and analysis to come.

Wednesday 24apr2019 - Monday 29apr2019: No restarts

Tuesday 30apr2019:

2019_04_30 11:50 h1broadcast0
Maintenance, updating DMT broadcaster channel list

Wednesday 01may2019 - Sunday 05may2019: No restarts

Monday 06may2019:

2019_05_06 13:54 h1nds1
2019_05_06 15:37 h1edc
2019_05_06 16:46 h1ascimc
2019_05_06 16:48 h1dc0
2019_05_06 16:48 h1fw0
2019_05_06 16:48 h1fw2
2019_05_06 16:48 h1nds0
2019_05_06 16:48 h1tw0
2019_05_06 16:48 h1tw3
2019_05_06 16:50 h1broadcast0
2019_05_06 16:50 h1fw1
2019_05_06 16:50 h1nds1
2019_05_06 16:50 h1tw1
2019_05_06 17:47 h1sysecatc1plc2sdf
2019_05_06 17:49 h1sysecatc1plc4sdf

Early maintenance. h1nds1 data offloading started, new h1ascimc model, code change to h1edc to stop disk access, associated DAQ restart, restarted stuck slow-controls-sdf.

Tuesday 07may2019: No restarts

Wednesday 08may2019:

Early morning corner station Dolphin crash. All corner station models restarts.

Thursday 09may2019:

2019_05_09 11:23 h1sysecatc1plc4sdf
2019_05_09 12:11 h1nds1
2019_05_09 12:12 h1nds1

Completed h1nds1 data offload. restarted another stuck slow-controls-sdf

Friday 10may2019 - Monday 03jun2019: No restarts

Tuesday 04jun2019:

2019_06_04 11:15 h1dc0
2019_06_04 11:15 h1edc
2019_06_04 11:16 h1broadcast0
2019_06_04 11:16 h1fw0
2019_06_04 11:16 h1fw1
2019_06_04 11:16 h1fw2
2019_06_04 11:16 h1nds0
2019_06_04 11:16 h1nds1
2019_06_04 11:16 h1tw0
2019_06_04 11:16 h1tw1
2019_06_04 11:16 h1tw3
2019_06_04 11:56 h1hpipumpctrlsdf
2019_06_04 11:58 h1sysecatc1plc1sdf
2019_06_04 11:58 h1sysecatc1plc2sdf
2019_06_04 12:00 h1sysecatc1plc3sdf
2019_06_04 12:00 h1sysecatx1plc1sdf
2019_06_04 12:02 h1sysecatx1plc2sdf
2019_06_04 12:02 h1sysecatx1plc3sdf
2019_06_04 12:02 h1sysecaty1plc1sdf
2019_06_04 12:03 h1sysecaty1plc2sdf
2019_06_04 12:03 h1sysecaty1plc3sdf
2019_06_04 12:07 h1pslopcsdf
2019_06_04 12:11 h1sysecatc1plc4sdf
2019_06_04 12:14 h1sysecatx1plc2sdf
2019_06_04 12:14 h1sysecaty1plc2sdf
2019_06_04 12:47 h1hpipumpctrlsdf
2019_06_04 15:49 h1hpipumpctrlsdf

Maintenance. DMT broadcaster channel update, new slow controls code, slow-controls-sdf updates, associated daq restart

Wednesday 05jun2019 - Monday 10jun2019: No restarts

Tuesday 11jun2019:

2019_06_11 10:07 h1iopsush2a
2019_06_11 10:07 h1susmc1
2019_06_11 10:07 h1susmc3
2019_06_11 10:08 h1suspr3
2019_06_11 10:08 h1susprm
2019_06_11 10:20 h1susitmx
2019_06_11 10:20 h1susitmy
2019_06_11 10:44 h1susitmx
2019_06_11 10:44 h1susitmy
2019_06_11 10:52 h1susetmy
2019_06_11 11:20 h1susetmx
2019_06_11 11:25 h1broadcast0
2019_06_11 11:25 h1dc0
2019_06_11 11:25 h1fw0
2019_06_11 11:25 h1fw1
2019_06_11 11:25 h1fw2
2019_06_11 11:25 h1nds0
2019_06_11 11:25 h1nds1
2019_06_11 11:25 h1tw0
2019_06_11 11:25 h1tw1
2019_06_11 11:25 h1tw3
Mainteance. recover h1sush2a from crash. New quad sus models, associated DAQ restart.

Arnaud, Saravanan

Hanford (H1) HAM4-5 ISI contributions to suspoint length (DOF)

This alog is the extension of the study we have carried out on L1 data for "HAM4-5 ISI contributions to length suspoint motion" (46407 & 46470). We could conclude for L1 suspensions that, below (300mHz) suspoint length motion is limited by horizontal motion of the platform ('Y' DOF) during day and night times. But above that frequency, motion is limited by 'Rx' (tilt) motion during night times, and limited by 'Y' (horizontal motion) during day times.

We ended with, in order to improve the suspoint length motion >1Hz, we would need to both improve the Y and Rx motion of the platform.

Similar study on H1 data shows that at low frequencies (<300mHz) suspoint length  motion is limited by horizontal motion in 'Y' DOF (as L1) but above that the motion is only limited by 'Rx' (tilt) (day & night). Only for SR2 we have seen some contribution of  'Rz' from 3-5Hz  from HAM4. Refer attached pdf1, pdf2 and pdf3 for SR2, SR3 & SRM suspensions. 

For this study we have considered data during low & high anthropogenic noise (30th May 1:00 A.M PT & 1st June 1:00 P.M PT) and also considered transformation matrices (cart2eul) from H1-HAM-ISI's (HAM4 & HAM5). Time epochs for this data show considerable variations in seismic bands (summary pages quiet & noisy) during day & night times, hence used for analysis.

h1ecatc1 C1_PLC1_Device3 is under reporting its slave count (actual = 156, configured = 291). 

We were just knocked out of observing by some SDF difference in TCS. Not sure what it was, I can't find the link to the screen on the SDF overview and it resolved itself before I could get any where. 

Summary: IFO running at 37 W PSL input.  ETM ring heaters increased to avoid PI ring ups (so far, successful). LSC FF measurements done. CAL sensing function measurements done. (Note: New feedforward filters are not installed, I've just taken measurements for the fits).

• 10:00am: EY ring heater increase by 0.5 W
  • guardian to RESET
  • Filter input to 0.7 W
  • guardian to FILTER_RH_INPUT
• 10:07am: lost lock
  • No sure why.  Sheila had just gone out to HAM6, also EQ warning (but no seismic signatures yet)
• 10:14am: EY ring heater lowered, EX increased.
  • Talked to Carl, they increase their ring heaters about 0.125W per 1W of PSL power increase, so (depending on absorption of our optics relative to theirs) we should have increased our ETM ring heaters symmetrically by 0.25W when increasing the PSL from 35.5W to 37.5W. 
  • So, both EX and EY ring heater guardians taken to RESET.
  • Both EX and EY ring heater filter inputs to 0.45 W (They were both at 0.2W before I touched them this morning)
  • Both EX and EY ring heater guardians to FILTER_RH_INPUT.
• Reacquisition: DRMI ASC not to a good place for SRM
  • When we transitioned BS to AS36, the POP buildups got worse.  So, I asked Patrick to stop at CHECK_AS_SHUTTERS, and I hand-adjusted SRM in pitch (checked yaw, no change needed).  We'll need to come back to this, but I wanted to get back to power-up for now.
• 11:17: Locked, at MAXIMUM_POWER (35W)
  • Change PSL request to 37W
  • PI at 10214.1 Hz a little high, but hopefully is transient and will go down now that PSL power increased.
• 11:21: SEI_CONF back to WINDY (small EQ during acquisition, so we had been in EARTHQUAKE)
• 11:24: 10214 Hz still going up a bit.  Brought EY ring heater down to 0.4W (guard to reset, then changed epics val, then back to filter_rh_input).
  • EX ring heater still low-ish at 0.35W; assume that the guardian means to be doing this?
  • 11:29: PI seems to be coming down!
• 11:35: Start moving spots, pitch
• 12:50: Still moving spots, working on yaw.  EY yaw had a big impact, but REFL WFS related ASCs started oscillating.  I turned the INP1 gain for both pitch and yaw down to -0.8 from -1.0, seems okay.
  • Also, SRC ASC (both AS_C and AS72) seem to move a lot more than I'd expect when I move the ETM yaw spots.  POP18 improves with ETM spot move, but then goes back down as SRC ASC converges.
• 12:56: Getting a bit hard to see some ADS lines because some other noise is a little higher (may need to tune ITMX A2L to match current spots).  Decreased ADS master gain by factor of 2 so I could turn up the line amplitudes by a factor of 2.
• 13:22: running A2L for ITMX, to match new spots.
  • Pit needed big change, but improved noise at low freq back to normal levels.
• 13:30: yaw offset on src1 improves POP18.  yaw offset on SRC2 basically no change in buildups.
• 13:35: pit offset on src1 doesn't really change pop18, but makes pop90 a little lower
  • But, seems to bring arm circulating powers down a bit.  Removing the pitch offset.
• 13:42: Lost lock; turned off LSC feedforward at the input, rather than raming down gain.  Ooops.
  • Change guardian's nominal power to 37W, loaded ISC_LOCK and LASER_PWR.
• Reacquisition:
  • DRMI ASC - SRC1 yaw offset turned off at same time as gain engaged, so even though the input switch wasn't on, src1 sent a big signal out and we lost the DRMI lock. Guardian changed to turn off that offset before gain is turned on.
  • DRMI ASC - switching to AS36 again brought pop18 down, but Sheila said she had success last week just letting the IFO lock as-is, so we're trying that.
    • Did okay, got to prep_asc_for_full_IFO, but then lost lock.  Invesitgating - haven't found anything obvious yet though.
  • DRMI ASC - this time things looked better after switching to AS36, but Patrick still touched SRM up a bit.  Yaw had basically no impact, but pitch improved the pop18 a bit.
• 15:15:  MICH and SRCL feedforward gains ramped down to zero.
• 15:17: INP1 gains down to -0.8 as they were last lock.  SRC1 yaw offset of 0.5 on.
• 15:37: Reduce RF9 modulation depth, laser noise suppression.  Manual-ed over SQZ since Sheila is working out there on it, and then went to NLN_CAL_MEAS for LSC feedforward measurements.
  • LSC FF measurements done. For ITM to DARM actuation, I only ran the PRCL template, so it should be used for all 3 of PRCL, SRCL, MICH when fitting.
• 15:52: LSC feedforward back on, CAL sensing measurement ongoing.
• Guardian changed for INP1 gain (in engage_asc_for_full_IFO) and SRC1 yaw offset turn on (at end of lownoise_ASC)
• 16:33: Back to NLN, checking SDFs while Sheila wraps up on SQZ inside