austin.jennings@LIGO.ORG - posted 08:04, Tuesday 28 February 2023 - last comment - 15:54, Tuesday 28 February 2023(67653)
Ops Day Shift Start
TITLE: 02/28 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
CURRENT ENVIRONMENT:
SEI_ENV state: MAINTENANCE
Wind: 24mph Gusts, 18mph 5min avg
Primary useism: 0.08 μm/s
Secondary useism: 0.51 μm/s
QUICK SUMMARY:
- 1538 - PSL enclosure temp alarm
- 1538 - h1ecat1 Beckhoff computer crash - Ryan C went into the MSR and hard reset the system with Daniel's instruction and it looks to be online
- CDS reboots to begin sometime early this morning
- 5 red channels on h1edc on CDS overview - H1:CDS-WAP_XX_STATUS - Tagging CDS
- DM 6/LAB 2 needs to be restarted
- IMC_LOCK grd is at fault due to a user code error - will investigate (Update: Issue has been fixed)
The h1ecat1 crash took down TCS which was brought back by Daniel. There was a short ~10 minute period where the ring heaters were in older settings before Daniel restored them to current settings.
Both CO2 lasers were down for ~15 minutes. CO2Y came up as expected. CO2X came back at the lower 35W power with a 0.2W minimum power as we had before Feb 8th - alog 67302. See top left of attached plot. This is not what we want. TJ and I edited the TCS_CO2 guardian to have the chiller set point be 20.5degC rather than the old nominal starting value of 20.0degC. We will hope as it warms up, CO2X will relock on the better 48W mode.
TJ, Camilla. We did not recover the 48W CO2X. It remains at 35W output and 0.3W minimum power. We attempted changing the chiller set point from 20.0 to 22.3degC but did not get a power jump. We have updated tcs_nom_annular_pwr in lscparams and reloaded and reran though the NOM_ANNULAR_POWER state in TCS_ITMX_CO2_PWR so that the CO2X annulus power to the IFO remains at 4W.