on cdsws04, there is a script running that will step the darm offset up and down for a few minutes, then step up the heat on om2, wait two hours for the thermal transient, and repeat this process 4 times.
The DARM offset steps will cause an SDF diff that will knock H1 out of observing, after it finishes each set of darm offset steps and move om2 the operators can take us back to observing. the om2 heater will cause some SDF diffs which can be accepted for tonight.
If the operators need to stop the script (if there is a reason to stand down or if H1 losses lock) you can hit control c on the terminal on cdsws04.
This script also sets the DARM offset TRAMP to 5seconds, I've accepted this in SDF for now but it will go back to 1 second next lock.
Because of EQ locklosses the operators stopped this script twice, 71493 and 71492. Just now I've started it for the last step. Hopefully it is not overly confusing that we got this data set in three different locks, we may want to re-run this sometime.
This aLOG marks the start of the OM2 heater being ON and "HOT" permanently from July 19 2023 17:16:16 UTC (10:16:16 PDT) until now (2023-08-29 and in to the forseeable future). Below, I document the OM2 TSAMS heater's "step period" cross-referenced against the observation intent bit being set high, using the channels - H1:AWC-OM2_TSAMS_POWER_SET - H1:AWC-OM2_TSAMS_THERMISTOR_1_TEMPERATURE - H1:AWC-OM2_TSAMS_THERMISTOR_2_TEMPERATURE as the channels which indicates the requested voltage applied to the TSAMS heater, and the corresponding temperature of the TSAMS heater. 2023-07-18 10:33:28 UTC (2023-07-18 03:33:28 PDT) [lock loss] 0.00 V # End of last Observation Stretch with OM2 COLD 2023-07-19 00:00:37 UTC (2023-07-18 17:00:37 PDT) OBSERVING 1.15 V 00:32:08 UTC ( 17:32:08 PDT) [lock loss] 03:34:55 UTC ( 20:34:55 PDT) OBSERVING 05:31:22 UTC ( 22:31:22 PDT) out of observe 05:35:24 UTC ( 22:35:24 PDT) 2.30 V 05:38:28 UTC ( 22:38:28 PDT) OBSERVING 07:38:51 UTC (2023-07-19 00:38:51 PDT) [lock loss] 07:39:24 UTC ( 00:39:24 PDT) 3.35 V 10:01:30 UTC ( 03:01:30 PDT) OBSERVING 17:06:31 UTC ( 10:06:31 PDT) out of observe 17:10:35 UTC ( 10:10:35 PDT) 4.60 V 17:16:16 UTC ( 10:16:16 PDT) OBSERVING Thus, as of 2023-07-19 17:16:16 UTC (10:16:16 PDT), the OM2 Ring heater has been "ON" and "HOT" (with 4.6 V requested, with a temperature of 33.1 and 56.7 [deg C] on thermistor 1 and 2 respectively.) Note -- as of 2023-08-15 20:15:55 UTC (13:15:55 PDT), Keita disconnected the Beckhoff system that monitored the TSAMS temperature -- see LHO:72241.