edmond.merilh@LIGO.ORG - posted 08:52, Saturday 17 December 2016 - last comment - 11:37, Saturday 17 December 2016(32659)
TCSX and TCSY tripped off
at 16:44UTC both TCS lasers tripped off. The Ops overview screen shows that the Flow alarm status is green. It seems to be only the Laser Power that's off. I'm currently scouring the Wiki to see what I need to do to get these back up.
Comments related to this report
alastair.heptonstall@LIGO.ORG - 09:30, Saturday 17 December 2016 (32662)
Just spoke to Ed and Jonathan. The flow rate now looks green. It's possible that this has been triggered by other computers going down. I can't get remote read-only MEDM access to check the status of the system. Ed will call me if they can't key the lasers back on at the controller.
alastair.heptonstall@LIGO.ORG - 11:37, Saturday 17 December 2016 (32672)
Ed and Dave got my remote access turned on so I could log in and take a look. It appears both TCS lasers are in a good state but are not outputing power. Power supply voltage is good. Flow rate is good. Temperature is good. Current is around 0.7A indicating that they are getting RF and are ready to laze. The Beckhoff screen shows red indicators on several read back channels, and it looks like this may be the cause of the lasers not coming on.
I've spoken to Dave and Ed again and they are going to take it from here since it looks like a Beckhoff issue. I'll be available by phone if needed. The laser chassis will probably need to be re-keyed off and on once this has been fixed.
Just spoke to Ed and Jonathan. The flow rate now looks green. It's possible that this has been triggered by other computers going down. I can't get remote read-only MEDM access to check the status of the system. Ed will call me if they can't key the lasers back on at the controller.
Ed and Dave got my remote access turned on so I could log in and take a look. It appears both TCS lasers are in a good state but are not outputing power. Power supply voltage is good. Flow rate is good. Temperature is good. Current is around 0.7A indicating that they are getting RF and are ready to laze. The Beckhoff screen shows red indicators on several read back channels, and it looks like this may be the cause of the lasers not coming on.
I've spoken to Dave and Ed again and they are going to take it from here since it looks like a Beckhoff issue. I'll be available by phone if needed. The laser chassis will probably need to be re-keyed off and on once this has been fixed.