Reports until 09:59, Monday 09 December 2019
H1 SQZ
daniel.sigg@LIGO.ORG - posted 09:59, Monday 09 December 2019 - last comment - 09:35, Tuesday 10 December 2019(53769)
OPO green buildup degrading

Today, I noticed that we have reached the maximum power value of the green power stabilization. The green transmitted power is currently not stabilized and only 90% of what it should be. Since the reflected green OPO power is increasing as well, I suspect that we are seeing a crystal degradation rather than a fiber degradation.

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daniel.sigg@LIGO.ORG - 09:35, Tuesday 10 December 2019 (53796)

Maximized the available green power after the SHG. We now lock with 17.5mW into the fiber and have about 15% headroom.