Reports until 16:41, Thursday 26 April 2012
H2 PEM
jenne.driggers@LIGO.ORG - posted 16:41, Thursday 26 April 2012 (2708)
Newtonian noise array installed!
[Jenne, Jan, with much help from Rich and crew, DaveB and crew]

We have finished installing our 44 accelerometers out at End-Y.  Again, please be mindful of the cones and cables.  Everything should be secure, and except for the cones which are nice and bright orange, there shouldn't be any trip hazards.  

We checked the data briefly, and all of the channels look good so far.  We'll have a look at the overnight data in the morning to make sure it's all okay.  One of the Isotrons (accelerometer power / amplifier box) that we have out there doesn't have the 10x gain that the other 2 do, so we may decide to change it out if the quiet nighttime ground motion is sitting on the ADC noise.  We'll switch out the box tomorrow if necessary.  

Some photos are attached, which show most of the array.

Thanks for all the help over the past 2 weeks, and we'll be back after the One Arm Test is complete to clean up and remove the array.
Images attached to this report