David McManus, Jenne Driggers

Today I set up 16 of the sensors for the corner station Newtonian noise L4C array. These were the 16 that were most out of the way and least likely to be tripping hazards, mostly focused in the 'Beer Garden' area and around the arms. The channels I connected were: 4,8,13,18,19,20,21,22,23,24,25,26,27,28,29,30. The sensors corresponding to these channels are included in the table attached to this report. The sensors are stuck to the ground using a 5 minute epoxy, and a foam cooler is placed on top of each one and taped to the ground. These foam coolers have a small hole cut near the base so that the cable can get out without touching the cooler (shown in one of the pictures). The cut surfaces are sealed with tape to prevent foam from flaking off onto the LVEA floor. The cables have basic strain relief by taping them to the ground on either side of the foam cooler, which also helps to ensure that the cable is not touching the cooler. I've attached two pictures showing what the sensors look like with and without the cooler. 

As a side note sensor 26 is quite difficult to access as it is placed almost directly beneath a vacuum tank. When it eventually needs to be removed a small person may be required to fetch it. The final attached photo shows how it is positioned (BSC7). I placed it by carefully stepping into the gap between the pipes that run along that section of the arm and then crawling under the vacuum tank support.