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MIF (General)
takaaki.yokozawa - 10:01 Tuesday 21 March 2023 (24475) Print this report
Morning silent run 230321
We performed the morning silent run at 230321
Date : 2023/03/21(Wed) 7:30 - 10:00(JST)
he sensitivity is placed in here

I performed the bruco and result is placed in here

We selected the interesting channel which have coherence.
K1:IMC-IMMT1_TRANS_QPDA2_DC_PIT_OUT_DQ (Some hint in IFI bellows leg, IMC chamber etc)
Images attached to this report
Comments to this report:
tomotada.akutsu - 11:59 Tuesday 21 March 2023 (24476) Print this report

Good to see the latest bruco result! There are several interesting features. Let's visit the link and check the features by oneself. In my impression, while we need ASC so that it would eventually help MICH noise reduction, it is important to do PEM injection study to IFI chamber legs to identify the main path(s) of the noise transfer, and damp the paths would be also effective. Some contributions from power-supply-like voltage fluctuations would be also interesting. And PSL room follows.

shinji.miyoki - 13:22 Wednesday 22 March 2023 (24491) Print this report

I am afraid the relative position of the IMMT1 Trans QPD against mirrors on the periscope in the PSL room moves because of water pressure inside the mountain. If so, some offset can change the optical path from the PSL room to IMMT1 and show some changes in resonances.

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