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The trend shows a big jolt to the MC1/3 pointing this morning at 8:30.
Was anyone working anywhere near there today? There is no elog.
If not, we will have to put a 'no janitor' sign on all of the 40m doors permanently to prevent mops misaligning our interferometer.
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The MC trend for the last 2 days shows that the MC suspensions were kicked again earlier today. Looking back at the suspension channel INMONs along with the MC trans sum shows that the suspensions get kicked everytime MC locks and unlocks. (Attch:1)
So I checked the effect of WFS on the suspensions by disabling and enabling the WFS feedback servo (Attch:2).
Since the IMC is not at it best pointing, whenever the MC autolocker runs and enables the WFS, the suspensions look like they are getting kicked. But really, it's just the WFS doing their job.
Edit, JCD: What this really means is that our DC MC pointing is bad, and we need to move the MC suspensions to offload the WFS. (All of the WFS output numbers for MC1 and 3 were around 100, which is pretty big for those numbers). We should resurrect the WFS offloading scripts so that we can do this more regularly, and not have to do it by hand. |