TITLE: 04/26 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Calibration
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 10mph Gusts, 8mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.10 μm/s
QUICK SUMMARY:
!LVEA IS STILL LASER HAZARD!

Locking was straight forward. Though we did go through PRMI_ACS .

Wind-Y team has been making good progress on the wind fence today without disturbing the IFO.
To ensure that the Y End Wind Fence work doesn't break our lock Jim had me turn off sensor correction for H1:ISI-ETMY.
H1:ISI-ETMY_ST1_SENSCOR_Y_NORM_FILT4_SW1R has been engaged to minimize the amount of "Bad_stuff" that gets sent to the ISI signal.
Please see screenshot attached below for future references.

APS is here again to day to work on the door locks for Filter Cavity End Station.

IFO has been locked for over 3.5 hours in NOMINAL_LOW_NOISE to allow for commissioning.
Some SQZ Angle adjustments have been made by Camilla.
Richard went into the CER and started poking things randomly and a source of noise was discovered to be the PMT Power Supplies which were then were turned off. 

The Calibration group is now taking a block of IFO time for Calibration measurements.

It's been fairly quite. very little wind, seismic motion, and the Violins look great!

Things to look forward to:
There is a need to move BIG RED the fork lift, from it's positon near the water tank to the staging building sometime in the next 24 hours. So if we lost lock there is an oppertunity to move BIG RED, so contacting Tyler after the next lock loss is a must.

We'd like to try and get the IFO into the OBSERVE State. So please try to resolve any SDF Differences that your sub systems currently have so we can try getting the IFO into the OBSERVE state. Please see Screenshot below of the SDF screen to determine if you can help resolve some SDF Diffs. Thanks! :)