Relocked the IFO 3.5 hours ago. Now at 116.5Mpc of range. Since environmental conditions are improving. All OK at this time.  

TITLE: 08/22 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Earthquake
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: Robert spent an hour commissioning. One unknown lock loss. One lock loss from an earthquake in the United States. Currently reacquiring lock. Jeff is covering the last hour of my shift.
LOG:

16:39 UTC Chris opening OSB receiving rollup door
16:48 UTC Lock loss
16:50 - 17:07 UTC Robert and company to LVEA
16:55 UTC GRB E347936 (IFO unlocked)
17:18 - 17:33 UTC Matt to LVEA
17:20 - 17:30 UTC Cheryl to LVEA to turn off breaker for PSL AC
17:24 UTC Having trouble locking PRMI, starting initial alignment
17:48 - 17:58 UTC Richard and Gerardo to optics lab
Lock loss from START_TR_CARM
18:23 UTC Chris opening OSB receiving rollup door
19:01 UTC NLN. Set observatory mode to commissioning for PEM work
19:20 UTC Robert to LVEA
19:37 UTC SEI_CONF to EARTH_QUAKE for eq from Wallis_and_Futuna
19:59 UTC Observing
 UTC Lock loss. Probably from eq in United States
21:04 UTC SEI_CONF to WINDY
21:22 UTC CHECK_MICH_FRINGES not staying locked
21:24 - 21:44 UTC Jason to optics lab
Lock loss from ENGAGE_ASC_FOR_FULL_IFO
Had to take guardian to manual to go from ACQUIRE_DRMI_1F to ACQUIRE_PRMI

• Normal (DIV)

After the spots moved back the RF power in reflection has quiet down, and fluctuations are back at their old values.

Old alog 51175.

19:59 UTC Accepted attached SDF differences.

Per Sheila's request these are attached.

Daniel, Nutsinee

Following up alog51313 and alog51270 we went out and quickly investigated the cause of CLF power jump last Tuesday. Daniel tightened up all the relevant cables but that didn't seem to fix the problem.

TITLE: 08/22 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: Niko
CURRENT ENVIRONMENT:
    SEI_CONF state: WINDY
    Wind: 3mph Gusts, 1mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.13 μm/s 
QUICK SUMMARY: H1:GRD-ISC_LOCK_USERMSG ALS_COMM: STOLEN (by: USER)

TITLE: 08/22 Owl Shift 07:00 – 15:00 (00:00-08:00), all times posted in UTC

STATE of H1: Observing

INCOMING OPERATOR: Patrick

SHIFT SUMMARY: Very quiet shift, microseism/wind down from earlier. Locked/Observing for 13.5 hours.

LOG:

07:00 (00:00) Start of shift

10:51 (03:51) Dropped out of Observing, SQZ unlocked

10:53 (03:53) SQZ locked, back to Observing

15:00 (08:00) End of shift

Ops Shift Transition: 08/22/2019, Owl Shift 07:00 – 15:00 (00:00-08:00) - UTC (PT)

State of H1: Locked

Intent Bit: Observing

Weather: 0-15 mph wind

Primary 0.03 – 0.1Hz: 0.01 um/s

Secondary 0.1 – 0.3Hz: 0.1 um/s

Outgoing Operator: Jeff

Quick Summary: Locked and Observing for 5.5 hours. Microseism slowly decreasing

   Ran Initial alignment, before attempting to relock. Initial Alignment went fine. While trying to relock, we had a storm system move across the site. Winds were gusting to over 40mph; primary microseism was up to 0.9um/s. Although it took a few tries the IFO was relocked and back into Observing at 01:38utc (18:38). 

   Winds have dropped down to the teens and 20mph range. The IFO range is 116.7Mpc.     

   After relocking, acepted the SDF diffs listed below in the attachment. Back into Observing.

M. Ball

I have been modeling cross-coupling between PUM pitch motion and DARM with different decoupling filters (LHO alog 51111) and wanted to investigate the effects of different scalar pitch to length (A2L) decoupling filters.

Figure 1 shows this coupling for a few different A2L gain values with a consistent beam pitch offset. We then wanted to look at how this behaved when the A2L gain is zero/off, as is currently in use (Figure 2). We then asked how this coupling looked for the different spot positions we have been using recently and how those compare to a centered beam (Figure 3).

L. Sun

The hourly C01 uncertainty budget plots and txt files are stored here https://ldas-jobs.ligo.caltech.edu/~ling.sun/Calibration/Uncertainty/O3C01/LHO/

LHO: from 1237827584 == Mar 28 2019 16:59:26 UTC to 1244307456 == Jun 11 2019 16:57:18 UTC

Note: If the detector is not locked or the calibration line uncertainty > 0.005, the results are not produced for that given time. (Results cover 71% of the whole duration.)

The attachment demonstrates that the variation of the envelopes is negligible.
- White dashed curve: median of the median values from all the hourly data
- White solid curve: median of the +/- 1 sigma values from all the hourly data
- Color: percentiles of the +/- 1 sigma curves (i.e., variation of the envelope)

TITLE: 08/21 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 114Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY:

H1's been at NLN since 9:16utc (2:16am) this morning with a couple of non-Observing breaks:

• Characterize new H1 spots was used this morning (marked as Calibration & Commissioning for just over 2hrs).  
• PRCL Feedforward measurements (Kara & Sheila)

TOMORROW:  Tenative plans for planned out-of-OBSERVING work for H1 & L1 (assuming V1 is Observing) is slated for 11amPDT (PEM team for ~60min).

LOG:

• 15:10 Transitioned to EARTHQUAKE state 
  • 15:30 Begin seeing ASC signals increase (mainly SRC1_P_OUT16 control signal)
  • 15:31 This is when main R-Wave appears to roll in
  • 15:37 EQ noise begins to decrease.
  • 15:54 Back to WINDY.
• Optics Lab incursions
  • 15:52-16:22, 16:25-17:28, 17:31-19:29, after_lunch-21:23, 22:46- Patrick
  • 18:06-18:25  Jason
• 15:56 MX cleaning & EX receiving entry (Vanessa)
• 16:03-18:34 Out of OBSERVING for CALIBRATION & COMMISSIONING measurements (related to new spot & weekly calibration) [JeffK, Sheila]
• 17:11  GRB notifcationas:
  • 17:11 GRB FERMI:  Could ignore
  • 17:14 GRB SWIFT:  Real for Stand Down, but h1 was in OBSERVING so we ignore.  On TeamSpeak with JoeH, and confirmed they should STAND DOWN 15min since they have been in OBSERVING for more almost 4hrs.
• 18:34 Back to OBSERVING (Calibration & Commissioning work post-spot-change is complete)
• 18:37 Trip to MY...dropping off vacuum (Karen)
• Some time around lunch time video0 computer was decommissioned and TVs swapped out for it.
• 21:19 GRB FERMI received and this was good for a 15min standdown until 21:34.
• 22:08 PRCL Feedforward measurement (Kara, Sheila).  Marked as COMMISSIONING
  • 22:35 Lockloss due to COMMISSIONING measurement.  Will leave Observatory Mode in COMMISSIONING to mark this down time until we are back to Nominal_Low_Noise.
• Lockloss#1 Notes:
  • Green Arms locked fine, but PRMI looked dead/misaligned (saw yaw flashing, so have been working on PRM & BS).  I made an attempt and fixing, along with Ed, but we had no luck....
  • So, looks like H1 will need an Initial Alignment & this is how I hand it over to JeffB.  

Following on from last week's Round 2, at Keita's request I took a series of beam profiles between ALS_M11 and ALS_M12 (ALS_M12 is the bottom periscope mirror, so this is the green beam as it goes into WBSC10 (as close as I can get to it, at least)).  Using the ALS_M11 mirror as the reference point, I took 4 profiles along the path; the profiler sensor was at 0° for these measurements, and the distances are from ALS_M11 to the profiler's sensor:

I've attached a beam profile of the beam at the farthest extent from ALS_M11 that I could get the profiler without bumping ALS_M12 (this is the final data point in the above table).  All of the profiles taken had this shape to it.  To my eye it looks like the top half of the profile is compressed versus the bottom half.

In addition, I rotated the profiler sensor by +45° at each data point to check for any gross off-axis ellipticity.  I've attached an example of this, taken at the same location as the first attachment.  The beam gets more round when the sensor is rotated, showing no gross off-axis ellipticity; all sensor-rotated profiles showed this shape.