bubba.gateley@LIGO.ORG - posted 16:46, Monday 22 May 2017 - last comment - 20:13, Monday 22 May 2017(36331)
Temperature increase at EX
Per request from Jeff K. I have raised the temperature at EX by 2 degrees F. from 64 to 66 degrees.
On what motivated the 2 [deg F] warmer request: Two attachments: 15 day trends of (1) the FMCS temperature sensors vs. PCAL temperature sensors (2) the vertical positions of the SUS The vertical positions of the SUS show a temperature overshoot (i.e. we corrected the too hot with too cool a set point), because the vertical position has been shooting up higher that before the upgrade (about 2/3rds of the way through the graph). The PCAL temp sensors suggest that the XVEA was at 20.3 [deg C] = 68.54 [deg F] before the upgrade, and had settled to 19.3 [deg C] = 66.74 [deg F] with the recently set setpoint of 64 [deg] (which was a copy-and-paste from EY a few days ago). Hence, I requested a 68.54 - 66.74 = 2.16 ~~ 2 [deg F] increase in temperature.