To understand how stable the GR lock can provide for the detuning, I would propose the record AOM frequency few times one day. And up to few days or weeks at least.
Note: we should try to not change alignment condition and use the same pointing.
1. 2021/06/20 12:10 109.538080MHz
2. 2021/06/21 09:20 109.538070MHz
3. 2021/06/21 14:21 109.538070MHz
4. 2021/06/21 21:37 109.538060MHz
5. 2021/06/22 09:27 109.538070MHz
6. 2021/06/22 13:29 109.538075MHz
7. 2021/06/22 15:53 109.538065MHz
8. 2021/06/23 09:07 109.538055MHz
9. 2021/06/23 13:27 109.538055MHz
10. 2021/06/23 21:40 109.538064MHz
11. 2021/06/24 09:53 109.538066MHz
12. 2021/06/24 13:53 109.538070MHz
13. 2021/06/24 20:02 109.538060MHz
14. 2021/06/25 16:06 109.538060MHz
15. 2021/06/25 19:02 109.538050MHz
16. 2021/06/26 10:37 109.538047MHz
17. 2021/06/26 20:06 109.538040MHz
18. 2021/06/27 11:04 109.538045MHz
19. 2021/06/27 19:21 109.538030MHz
20. 2021/06/28 10:01 109.538050MHz
21. 2021/06/28 15:00 109.538020MHz
22. 2021/06/28 22:00 109.537910MHz
23. 2021/06/29 15:59 109.538030MHz
24. 2021/06/30 09:56 109.538070MHz
25. 2021/06/30 20:19 109.538060MHz
26. 2021/07/1 11:01 109.538065MHz
27. 2021/07/1 20:12 109.538065MHz
28. 2021/07/2 08:54 109.538060MHz
29. 2021/07/2 20:06 109.538030MHz
30. 2021/07/3 07:06 109.538024MHz
31. 2021/07/4 09:29 109.538060MHz
32. 2021/07/5 16:37 109.538050MHz
33. 2021/07/6 10:23 109.538030MHz
In the last week, resonant condition between GR and IR changed by around 20Hz.
To check if there is any correlation with suspended mirrors, I checked the oplev signal of all mirrors. Basically all mirrors are staying in the same orientiation, but end mirrors have quite obvious drift during the last week. In fact, this drift seems to be not really because we are not really correcting it by the coils. So we need to investigate why end mirror oplev is behaving like this.