Reports 1-1 of 1 Clear search Modify search
Virgo Runs (O4c)
Sposito - from remote - 7:15 Saturday 12 July 2025 (67265) Print this report
Operator Report - Night shift

Today, I found ITF in SCIENCE. At 21:10 UTC, the ITF unlocked. For some unknown reasons, the ITF started to experience problems related to INJ. While trying to perform Fmoderr, the node got stuck in a loop. I temporarily put down the INJ_MAIN node then restarted the lock, and for some reason, this procedure worked, allowing the ITF to reach CARM_NULL_1F.

However, we then encountered the same issue as in previous days. Due to a glitch, Metatron requested LOCKED_PRWI while at CARM_NULL_1F, which caused the system to unlock. While attempting to relock, INJ_MAIN got stuck again in the Fmoderr loop.

To resolve this, I modified the ITF_LOCK ini file to skip the Fmoderr check by changing the line fmoderr_skip = false to fmoderr_skip = true. Thanks to this change, I was able to restart the lock successfully.

At 23:31 UTC, the ITF was back in SCIENCE.

At 00:04 UTC, the ITF unlocked.

At 00:53 UTC, the ITF was back in SCIENCE.

At 02:36 UTC, the ITF unlocked again; the WARM_LOCK process crashed, and I had to restart it. I reverted the change on the ITF_LOCK ini file from fmoderr_skip = true back to fmoderr_skip = false. I also manually realigned the CITF. After an unlock at LOW_NOISE_2, 04:52 UTC the ITF finally reached SCIENCE.

Images attached to this report
Comments to this report:
bersanetti - 9:16 Saturday 12 July 2025 (67267) Print this report

As stated in multiple occasions, there is no Metatron glitch unlocking the interferometer. The unlock was at the PSTAB level (see Figure).

There is, after an unlock, the bug by which sometimes the request to go back to LOW_NOISE_3 is overwritten by the last request done by CALI, even if there shouldn't be one. Yesterday ITF_LOCK was restarted (for another reason) and the bug persists. While a proper fix is still missing we could try to stop and restart also CALI.

Images attached to this comment
Search Help
×

Warning

Error

The present report has been modified outside this window. Please check for its integrity in the main page.

Refreshing this page will move this report into drafts.

×