Top length to test mass pitch/yaw measurements for L2P and L2Y decoupling on ETMX and ITMX were (re)started and will run overnight. The cavity is curently locked on green with ITMX and ETMX BSC-ISI running with ST1 Isolated in level 3. ITMX measurement is running in the background (with the diag -f command) on opsws1, and ETMX is running on opsws6 with DTT open.
RED TEAM : ITMX measurement should be done before 5am tomorrow. If ETMX is still running PLEASE PAUSE THE EXCITATION before misaligning it
Thanks to Alexa's instructions, locking the cavity with the green laser was fairly easy. Although few things to notice in the process :
- IMC guardian should handle turning on MC2 M2 and M3 length feedback switches. They were off when Evan and Yuta tried to lock the mode cleaner.
- Since the green beam was nicely centered when the ITMX BSC-ISI was damped, the ST1 CPS offsets were reset and stored as targets. (Otherwise it would ring up the T240 when isolating, and trip the WD).
ETMX TF measurement is done -- I don't see any excitation in the MEDM screen and there is no active diag process running on opsws6.
So I misaglined it by the guardian.
ITMX TF is still running. Note that opsws1 crashed but the process is still running. You can see it runing by sshing to the workstation.
We found that the excitation at ITMX was still at 10 Hz which means the measurement didn't progress over the past hours at all. We determined that diag was not a healthy state and therefore we killed the process.