Reports until 07:14, Friday 20 December 2013
H1 ISC
kiwamu.izumi@LIGO.ORG - posted 07:14, Friday 20 December 2013 (9041)
vertex interferometer alignment: still unable to locate POP beam

Sheila, Kiwamu

We looked for the POP beam by opening up several viewports on both HAM2 and HAM3. However we couldn't find the POP beam mostly because none of the viewports were in a convenient location to look at the POP path. Also we looked at the swiss cheese baffle with both analog and GigE cameras from the HAM3 spool and jiggled the POP steering picomotor. We didn't see a beam hitting in the vicinity of the POP penetration hole. At this point, we have no idea of where it is stuck.