gabriele.vajente@LIGO.ORG - posted 19:58, Monday 18 March 2024 - last comment - 22:19, Monday 18 March 2024(76506)
SRCL detuning has no effect on bucket noise
Jennie, Naoki, Evan, Gabriele
We changed the SRCL offset between -250 and 0 counts, and optimizd the squeezing angle at each value. We see an effect at high frequency (worsening when the offset is different than the nominal -175) but not noticeable change in the bucket.
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| SRCL offset (ct) | PCAL (m) | BLRMS, 430–490 Hz (m) | Ratio (m/m) |
| −250 | 1.182×10−18 | 1.114×10−19 | 10.61 |
| −175 | 1.185×10−18 | 1.101×10−19 | 10.76 |
| −100 | 1.180×10−18 | 1.107×10−19 | 10.66 |
| 0 | 1.177×10−18 | 1.101×10−19 | 10.69 |
No clear win here.