Reports until 09:54, Wednesday 24 April 2013
H1 IOO
keita.kawabe@LIGO.ORG - posted 09:54, Wednesday 24 April 2013 - last comment - 10:00, Wednesday 24 April 2013(6182)
HAM IO last check before closing down

Jim unlocked HAM2 and HAM3 ISIs. HAM3 door covers are restricted by bow attachments on the door so they don't couch HAM3 ISI. Door covers for HAM2 were half opened to prevent them from touching HAM2 ISI.

After Sheila reset all WDs, IMC started flashing with 00 mode. The alignment was actually pretty good.

PRM was put in an aligned position, and the beam made it through the baffle towards HAM1 though the horizontal motion of the beam was large enough that the beam clipped once in a while, but once things are under vacuum this should settle down.

All in all we're in a very good shape.

Comments related to this report
jim.warner@LIGO.ORG - 10:00, Wednesday 24 April 2013 (6183)

I'm attaching CPS trends for both chambers, capturing before and after unlocking (unlocking is marked by the noisy areas in the middle of each plot). Most shifts are ~200 counts or less (.25 milli-inches), but the biggest is about 600 counts (.75 milli-inches). Pretty good.

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