[JenneD, SudarshanK]

We  lowered the ASC DHARD Pitch Gain to see if we can actually stay locked with smaller gain. We lowered the gain by a factor of 3 (from -30 to -10). The interferometer happily stayed locked but we didnot notice any significant change in the DARM spectrum (Attachment 1). During this time, the purge air/Kobelco was turned on as part of Tuesday maintenance, which might elevate the DARM noise floor but should be similar throughout our study. 

We also made noise injections at these two configurations via DHARD_P_EXC. The sensor corrections was turned off during one of those injections but we didnot see much difference between the two.

At next comissioning opportunity, we will probably try to measure sensing function at the lower gain value because we expect the sensing function to  change (move towards "normal") with lower gain.

Rick, Camilla, Dave:

The H1PSLFSS.ini file was hand edited to uncomment the four requested channels and set their data rates to 256Hz.

The new DAQ was loaded onto h1pslfss at 08:05 PDT by pressing the "DAQ LOAD" button on the GDS-TP MEDM.

At the next optimum time, the DAQ data concentrator was restarted (08:06 PDT). This did not go well, monit on h1dc0 did not restart the daqd process. I logged into h1dc0 as root, stopped and then started monit, which in turn started daqd. This meant the DAQ was down for an additional 2 minutes than expected.

I ran my new script to restart all the FOM plots which are NDS clients (ndscope and DTT).

To verify the new channels have been added:

on the PSLFSS GDS_TP MEDM the number of fast channels increased from 4 to 8, the DAQ data rate increased from 293 to 297 kB (+4 because 1024 single prec float data points added per second)

I ran ndscope to view the 4 new channels.

TITLE: 03/10 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 115Mpc
OUTGOING OPERATOR: Camilla
CURRENT ENVIRONMENT:
    SEI_CONF state: WINDY
    Wind: 3mph Gusts, 2mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.25 μm/s
QUICK SUMMARY: Brief bit of commissioning before the start of maintenance.

TITLE: 03/10 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 119Mpc
INCOMING OPERATOR: Camilla
SHIFT SUMMARY: Some PEM commisioning, not much else
LOG:

2:07 Out of Observe for some Robert measurements on ETMX ISI & HEPI

2:47 Back to Observe

WP8563 add four 256Hz DAQ channels

Rick, Camilla, Dave:

I have hand edited H1PSLFSS.ini to uncomment and set datarate=256 for the following four channels:

H1:PSL-FSS_FAST_RAMP_INJECTION_IN1_DQ

H1:PSL-FSS_NPRO_TEMP_IN1_DQ

H1:PSL-FSS_NPRO_TEMP_OUT_DQ

H1:PSL-FSS_TEMP_SEARCH_LOOP_IN1_DQ

This is purely a DAQ reconfiguration with no associated model change, allowing us to load the new configuration into h1pslfss by just pressing the 'DAQ LOAD' button on the GDS_TP medm, and then restarting the DAQ.

If all goes well we will not need to restart the h1pslfss model, however if it becomes necessary to do this it is important that we do not compile or install h1pslfss because model changes have been made which we do not want to be installing at this time.

I opened a very old dtt, and did not check nor recall that it was set up for an injection, and then I hit start, and for approximately 1 second there was an excitation on H1:SUS-IM2_M1_TEST_L_EXC. 

Attached are two plots.  The first shows the EXCMON signal, the length, pitch, and yaw DAMP signals, and the MASTER_OUT  signals for each OSEM.  The second plot shows the EXCMON signal, the length, pitch, and yaw DAMP signals, and the OSEMINF signals.   There was an effect on IM2, seen in the Master_OUT and OSEMINF swignals,  and an unknown effect on H1.

TITLE: 03/09 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Jim
SHIFT SUMMARY:

Started off shift with H1 making it to NLN.  Then there was the weekly Monday calibration measurements, some commissioning, and mostly observing today.  There was some tumbleweed work as well.  Tour will be visiting 
LOG:

• ~14:45 X-arm tumbleweed work (tyler, roger)
  • 15:58 -16:04 Driving Big Green around LVEA from X to Y
• 15:22 Back to OBSERVING
  • After ~3 early ALS locklosses & then 3 lockloss at later steps in locking.
• 17:29 Optics Lab for gear (Cheryl)
• 17:45 MY visit to check HVAC (Bubba)
• Taking Big Green over the Access Bridge for tumble weeds
  • 18:12-18:15 starting over bridge
• 18:00 out of Observing:  Calibration work begins. (Jeff K)
  • 19:30 - 19:36 Quick post calibration commissioning work by Jenne & Robert in prep for Maint tomorrow.
  • 19:37 Back to OBSERVING
• 18:06 hr of cleaning at MX (Vanessa)
• 18:23 & 20:57 Trips to MY (paperwork on crates) & EY for LN dewar paperwork (Christina)
• 18:56-19:08 Measurements at MX (Kyle)
• 20:14 - 20:16 Out of Observing due to accidental IM excitation (Cheryl)
• 21:41 - 21:57 Approved PEM Commissioning time (Robert)
• 21:45 - 21:48 Drive over access bridge (Tyler)
• 22:30 - 22:50 ETMx violin mode 13 & 16 were ringing up (they took a big step up during the calibration measurement at 19:07); (thanks for catching this, Cheryl!).
  • Took both modes from gains of 0 to higher gain values approaching their "nominal" of 30.  Currently watching them both drop from above 4.0 down 2.0.  And I then took the gains for both modes back to 0.
  • 23:00  At 0 gain, both modes flattened out and then started to  increase again.  So they were both increased from 0 up to 40 this time.
  • Have notified Rahul about this.
• 22:50 Transitioning LVEA to laser SAFE (Ed)

nothing notable aside from the mysterious stepping DCHILFLOW.

J. Kissel

Without having the chance to assess how much we're improving the overall uncertainty budget, I've gathered another round of all sensing and actuation function measurements today in hopes to push the number of measurements, N, in to the "diminishing returns" region of 1/sqrt(N) improvements. Measurement and analysis to come in the fullness of time.

For now, the templates and exported data for today's measurements live here:
    /ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O3/H1/Measurements/FullIFOSensingTFs/
        2020-03-09_H1_PCALY2DARMTF_LF_SS_5t1100Hz_10min.xml
        2020-03-09_H1_DARM_OLGTF_LF_SS_5to1100Hz_15min.xml
        2020-03-09_H1_PCALY2DARMTF_BB_3min.xml             << started at 2020-03-09 18:00:33 UTC for later processing against GDS/DCS h(t) products.

    /ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O3/H1/Measurements/FullIFOActuationTFs/
        2020-03-09_H1SUSETMX_L3_iEXC2DARM_12min.xml
        2020-03-09_H1SUSETMX_L3_PCAL2DARM_6min.xml

        2020-03-09_H1SUSETMX_L2_iEXC2DARM_12min.xml
        2020-03-09_H1SUSETMX_L2_PCAL2DARM_6min.xml

        2020-03-09_H1SUSETMX_L1_iEXC2DARM_8min.xml
        2020-03-09_H1SUSETMX_L1_PCAL2DARM_5min.xml

General/Overview:

• Prefer to Transition to Laser SAFE sometime today if we get a lockloss (in prep for Tues Morning).
  • Before transitioning to SAFE, perform camera adjustments (Cheryl)
• Starting ~7am/early:  Commissioning (ASC measurements); possibly skipping PEM Magnetic injection.
  • Perhaps start Purge Air/Kobelco early (7:30am?) after Commissioning meas above.
• Tumbleweed update:  X & Yarms checked this morning; Big Green over the Access Bridge to address tumbleweeds on the Back Side.  Fire Dept visit possibly this week ...they give few hours notice/heads up.

• Posting Schedules for upcoming work post-O3 in the Control Room (Betsy)

• Donuts for weeklies

LVEA

• ~8-10am Laser SAFE
• Site:  Assisting with H2 IMC disconnect tomorrow. 
• VAC:  H2 IMC disconnect (WP#8560).  Purge air/Kobelco ON as early as 7:30am.  CP1 LN2 delivery.  
• PSL:  FSS work (8-10am)  Adding another FSS channel requiring 8am DAQ restart. (Camilla, Dave)
• 10-noon Laser HAZARD
• DRMI locking for 2hrs for two separate measurements needing DRMI (Jenne, Robert).  Also need lights off around HAM6.  Will need walls erracted upstream of HAM6 & chains up for "bridge" for this work.
• EE:  A+ measurements for cable trays
• Possibly HAM transport work depending on other work(cont.) [Hugh]
• Possibly ISC rack (Marc, Dick)

Out Buildings

• Site:  Shipment of HAM door crates from MY.
• VAC:  EX GV20 soft close (WP#8556)
• EY laser vibrometer set up (needs laser hazard) Robert
• EE:  EY/EX computer set up, MX/MY replacement WAPs

TITLE: 03/09 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    SEI_CONF state: WINDY
    Wind: 1mph Gusts, 0mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.21 μm/s
QUICK SUMMARY:

Hand-off from TJ & continued to let H1 go.  It's been down 2hrs.

Tumbleweed baling started rougly 30min ago.

It tripped when we reached the RESONANCE state in ISC_LOCK. This trip happened later in the reacquisition from what we have seen in the past.

I also found SEI_DIFF stalled in the DOWN state, I'm a bit confused how it got there, but I'll look into it later.