Reports until 12:02, Friday 15 March 2019
H1 SQZ (SQZ)
nutsinee.kijbunchoo@LIGO.ORG - posted 12:02, Friday 15 March 2019 - last comment - 12:52, Friday 15 March 2019(47562)
A Quick SQZ Loss Estimate

Sheila, Nutsinee

Here I plot a quick couple of data points from yesterday's measurement. A more detail analysis will come later (extracting sqz/asqz from higher averages DARM spectrum and fitting with the Monte Carlo). These sqz/asqz data points were acquired using the 10s average blrms around 1.65kHz. The loss of 40% fits the measurement pretty well (same as Livingston). We need more non linear gain to accurately determine the phase noise.

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nutsinee.kijbunchoo@LIGO.ORG - 12:52, Friday 15 March 2019 (47564)

Attached a sqz/asqz vs. frequency plot.

 

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