TITLE: 03/30 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
CURRENT ENVIRONMENT:
    SEI_CONF state: WINDY
    Wind: 14mph Gusts, 10mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.29 μm/s 
QUICK SUMMARY: Took guardian to READY. Jason has shut down the PSL. Richard is checking the laser safety system.

I injected into the PSL, studied coupling at ISCT6 for a candidate, completed the re-dos, and after finding the RF amp with help from Richard (it had been moved to the Fire Pump room), I was able to make the RF injections from the water tower. I also did a small coil search for magnetic coupling sites at EY, since the coupling had increased by a few. Philippe reports that, aside from this magnetic coupling increase, coupling was about the same as at the beginning of the run.  While this was an abreviated set of PEM injections, I got more done than I had hoped, and I think we are pretty well covered for any new sources we find in the data.

Average duty cycle of 76.14%.

Average range of 118 Mpc for the week.

High winds Monday afternoon led to increase in HAM2 acoustic noise and slight range fluctuations.

Large Japan/Russia earthquake on Wednesday at 2:30 (UTC) knocked H1 out of lock.

Increase in dips and spikes in spectral ratio toward end of the week especially in 500, 1000, 1500, and 2000 Hz.

H1 out of observing as of 17:00 (UTC) on Friday March 27th due to suspension of O3 because of Covid-19.

TITLE: 03/29 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: Currently relocking. Robert is still on site.
LOG:

15:03 UTC Robert on site, various locations around corner station
19:00 UTC Robert back for lunch

19:44 UTC Lock loss from NLN
20:46 UTC Lock loss from CARM_150_PICOMETERS
20:56 UTC Lock loss from DARM_TO_RF
21:42 UTC NLN

21:59 UTC Lock loss from NLN
22:10 UTC Lock loss from CARM_150_PICOMETERS
Had to change DIFF offset to find IR
22:27 UTC Lock loss from ENGAGE_DRMI_ASC
22:34 UTC Lock loss from ENGAGE_DRMI_ASC
23:00 UTC Handing relocking over to Jeff

Have remained locked at NLN. Robert is on site. No issues.

TITLE: 03/29 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
CURRENT ENVIRONMENT:
    SEI_CONF state: WINDY
    Wind: 24mph Gusts, 20mph 5min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.16 μm/s 
QUICK SUMMARY: Locked at NLN. No issues.

  All well at mid-shift. The wind and microseism remain elevated. The range is somewhat diminished, but this is not an issue in post O3. 

   Robert is offsite. He will be returning tomorrow to continue his commissioning work.   

I redid magnetic and acoustic injections that saturated some sensors at EY and CS. The magnetic coupling at EY has increased by a factor of 5 or so. The weekly coil injections at EY do not show a change, so it was before we had the weekly injection going. I did some work on localizing coupling site and will do more on Sunday. Also left for Sunday are RF injections (I ran into problems finding the amp today) and some followup.

TITLE: 03/28 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: Locked at NLN entire shift. Robert on site for PEM measurements. No issues.
LOG:

16:00 UTC (09:00 Local) Robert on site
18:29 UTC (11:29 Local) Robert to end Y
21:03 UTC (14:03 Local) Robert back for lunch

Have remained locked at NLN. Robert is at end Y.

TITLE: 03/28 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
CURRENT ENVIRONMENT:
    SEI_CONF state: WINDY
    Wind: 20mph Gusts, 18mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.14 μm/s 
QUICK SUMMARY: Locked at NLN. No issues.

   Lost lock at the start of the shift. Relocking failed at DRMI_1F, with PRMI having trouble and eventually running through MICH twice. Aborted locking and ran Initial Alignment. After Initial Alignment finished, the IFO relocked on the first try. It has remained lock since. 

   While relocking Robert S. after competing what injections he could at End-Y left the site.      

I started when the run ended and made magnetic and acoustic injections at EY. In the afternoon I started low-f shaker injections. One of the sweeps knocked the interferometer out of lock. I have a bunch of redos tomorrow for accelerometer saturation (we push right up to saturation to get the best possible signal in DARM). Also, a study for a burst event and more low frequency injections. If I had to guess, I think I will have to use some time on Sunday.