Reports until 15:19, Tuesday 27 August 2019
H1 SEI
jim.warner@LIGO.ORG - posted 15:19, Tuesday 27 August 2019 (51548)
BRSY bug blocking, rebalancing

This morning Chiara helped me tape up BRSY. We only taped up the upper part of the light pipe, around the beam splitter, I didn't want to disturb the lower part, see attached photos.

While I was there, I started getting concerned about the centering of the BRS which was already close to the edge, so I attempted to use my "easy-mode" rebalance of the BRS. This didn't work, so I asked to go out again. I got lucky this time and it only took about an hour to get to what I think is a good position. I worry a bit that after the temps settle down in the box  BRSY may drift out of range the other direction. It's sitting at about 5000 ct on the driftmon, which is very good, but the tape is enough to affect the final equilibrium temp inside the box and I'm not sure how far it will drift. I'll keep monitoring.

Also, Jeff asked that I make accessing the remote desktop connections to the BRS easier. I have aliases set up in my bashrc file so I just have to type my alias in a terminal. I've added buttons to the ISI config screen, called BRSX/Y Remote near the BRS status blocks on the ISI_CONFIG screen. The links are the orange buttons on my attached screenshot of the ISI_CONFIG screen.

I also added Jeff's BRS health ndscope, which is now in the isi/h1/ndscope folder, called BRS_Health_Check. It's launched from the pink button next to the BRSX remote desktop button.

Images attached to this report