KAGRA Logbook

MIF (General)

takafumi.ushiba - 19:29 Thursday 02 April 2020 (13956)

Alignment recorder guardian modification

[Akutsu, Nakano, Yamamoto, Ushiba]

We modified the alignment recording guardian.
If we requested PRFPMI_RECORDING to ALIGNMENT_RECODER guardian, IMMT2, all PRs, all test masses, SR3, and SR2 good OpLev value is recorded only when alignment is good.

Restore OL set point, OFFLOAD_PRFPMI state, also implemented but not tested yet.
I will test it tomorrow morning.

Comments to this report:

takafumi.ushiba - 19:05 Friday 03 April 2020 (13966)

Thanks to Nakano-kun and Yamamoto-kun, we found there are some bugs in the code.
I modified the code but not yet tested again.

So, if someone has time tonight, please request "PRFPMI_RECORDING" to ALIGNMENT_RECODER guardian and report it works or not.

tomotada.akutsu - 0:19 Saturday 04 April 2020 (13972)

Modified it slightly. Concretely putting,

Change the is_good_ifo condition. Especially, maybe we don't care much about whether it is "OBSERVATION" or not.
For PRFPMI, TRANSX, TRANSY, and POP90I are used for judging whether good condition or not. But they vary in accordance with the input power. So I implemented normalization for those values.
A minor change; some log comments.

So far this Guardian works well; Good oplev signals are chasing the actual values when the good_ifo condition is fulfilled. Let's see.

I did svn commit for those two files.

.../sys/k1/guardian/ALIGNMENT_RECODER.py
.../sys/common/guardian/kagralib.py