[TVo, Jenne, Cheryl]
There was a lot of random walking this morning, but with cameras newly focused and pointing at useful things, we now have the beam hitting the bottom of the SRM cage. Once we found the beam, which required moving ITMX (ITMY misaligned), BS and PR3, we walked those optics back to their good locations from last night, while also moving SR2 and SR3 so that we kept the beam on the SRM cage. Now all PRMI-related optics are back at their locations from last night, and we still have the beam at SRM. I realigned ITMY and we have some nice MICH fringes. Next up will be moving the beam up onto the SRM itself, then seeing if we can either get SRMI/DRMI flashes, or maybe get the SRM beam retroreflected back to the POP port.
Attached is a screenshot of where the SR2 and SR3 mirrors need to be, to get the beam to the bottom of the SRM cage. Note that SRM's OSEMs are being looked at by the CDS/EE team, and so we may not be able to actuate it tonight, in which case we'll start here in the morning.
[Keita, TVo, Jenne]
We looked at trying to center the beam on SR2 using SR3, but we think that we'd like to misalign SRM to ensure that we're not confusing ourselves a bit. So, we'll come back to this in the morning.
Path forward: Misalign SRM, use SR3 to center on SR2 baffle aperture, use SR2 to center on SRM. Depending on time and how we're feeling, we could either work a bit on SRM alignment to get the beam back to POP and see flashes to confirm that we're really happy with SR2 and SR3, or we could go straight to HAM6 alignment since we don't care about SRM's alignment for that work.