Reports until 20:44, Wednesday 11 April 2018
H1 ISC (ISC, SYS)
rich.abbott@LIGO.ORG - posted 20:44, Wednesday 11 April 2018 (41398)
First Pass at Electric Field Meter Install
Luis, Craig, Georgia, Calum, Travis, Betsy, Rich

We had a go at running the field meter in End-X today, but hit many snags.  The spectra we were able to take will be posted soon.  At time of writing, we believe one wire (the Y-minus of the Y-axis differential output) is not connected somewhere in the air-to-vacuum wiring chain.  We will investigate tomorrow.  The good news is that we were able to get a first look at the X-axis spectrum, but frankly we are suspicious of the results because we don't see the expected power line features.

We installed the QPD chassis that supports the electrometer into the ISC rack at U-height 3.  The new unit is S1102829, the old unit is S1102832.