aLIGO LHO Logbook

H1 PSL (PSL)

ibrahim.abouelfettouh@LIGO.ORG - posted 11:58, Sunday 20 October 2024 - last comment - 14:57, Sunday 20 October 2024(80774)

PSL Weekly Report - Weekly FAMIS 26307

Closes FAMIS 26307. Last checked in alog 80649. Service mode error, see SYSSTAT.adl is the only new difference between last week's check.

Laser Status:
    NPRO output power is 1.827W (nominal ~2W)
    AMP1 output power is 64.44W (nominal ~70W)
    AMP2 output power is 137.4W (nominal 135-140W)
    NPRO watchdog is GREEN
    AMP1 watchdog is GREEN
    AMP2 watchdog is GREEN
    PDWD watchdog is GREEN

PMC:
    It has been locked 1 days, 22 hr 40 minutes
    Reflected power = 24.82W
    Transmitted power = 100.8W
    PowerSum = 125.7W

FSS:
It has been locked for 0 days 0 hr and 4 min
TPD[V] = 0.8048V

ISS:
The diffracted power is around 2.4%
Last saturation event was 0 days 0 hours and 5 minutes ago

Possible Issues:
    AMP1 power is low
    PMC reflected power is high
    Service mode error, see SYSSTAT.adl

Comments related to this report

ryan.short@LIGO.ORG - 14:57, Sunday 20 October 2024 (80775)

Link

Looks like I had left the PSL computer in service mode after work on Tuesday; fortunately this doesn't actually effect anything operationally, so no harm done. I've just taken the computer out of service mode.

I also added 100mL of water into the chiller since Ibrahim had gotten the warning from Verbal today.