Reports until 17:46, Tuesday 25 March 2025
H1 SEI
oli.patane@LIGO.ORG - posted 17:46, Tuesday 25 March 2025 (83560)
ISI CPS Noise Spectra Check Weekly FAMIS

Closes FAMIS#26035, last checked 83269

Script reports that noise is elevated for:
ETMY_ST2_CPSINF_V2

Overall, elevated noise in the corner station seen between 7.6 and 9 Hz in various sensors.
I also noticed that the noise between 0.1 and 1 Hz falls off slightly faster this week as compared to last week, getting down to 1.5e-9 before 1 Hz, versus last week the sensors were still reading 5e-9 at 1 Hz.

 

HAM2
- The peak in V2 and V3 at 10.5 Hz is a bit larger

HAM2/HAM3/HAM4/HAM5/HAM6
- H3/V3 have peaks between 7.6 to 9 Hz that are up to half an order of magnitude higher than those frequencies were last week

ITMX ST1
- Increased noise between 7.6 to 9 Hz in all (I think) sensors
ITMX ST2
- Increased noise at 7.6 Hz in H3

ITMY ST1
- Slightly elevated noise between 7.6 to 9 Hz in H1/H3/V1/V3
ITMY ST2
- Slightly elevated noise between 7.6 to 9 Hz in all (I think) sensors

BS ST1
- Slightly elevated noise between 7.6 to 9 Hz in V1/V2/V3
BS ST2
- Slightly elevated noise between 7.6 to 9 Hz in all (I think) sensors

Non-image files attached to this report