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VIS (EY)
takafumi.ushiba - 19:21 Thursday 16 May 2024 (29539) Print this report
Comment to Health check for ETMY (28430)

I checked TFs if ETMY, which was measured on May 10th.
Some of TFs are strange, so we need to check them carefully.

Followings are what I noticed.

1. Vertical TFs of the tower changes a lot (fig7-11, 14, and 21-23). I would like to ask Takahashi-san to check them.
2. MNV TF changes a lot (fig26). It seems due to increasing the coupling from pitch DoF.
3. MNV3 TF gain becomes lower (fig35). Since currently MNV3 OSEM INF has again of -0.736, it might be due to this gain. This might cause MNV strange TF.
4. IMR TF gain becomes lower (fig39).
5. Sign of TM TF phases are changed (fig47-51). Dd we make a mistake dueing regluing the magnets?

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