Reports until 07:35, Thursday 12 December 2013
H1 ISC
keita.kawabe@LIGO.ORG - posted 07:35, Thursday 12 December 2013 - last comment - 10:53, Wednesday 18 December 2013(8919)
HAM1 REFL path: done for the moment (Jamie, Kiwamu, Keita)

Yesterday we adjusted WFS1 path.

From some calculations by myself and Lisa Barsotti plus an assumption that MC mode cannot be THAT bad, I concluded that there isn't that much of a difference between moving everything to optimize VS moving only RM2.

Detailed analysis will follow shortly, but it seems like we're at not too bad, not too good position and if that turns out to be the case we'll stop here.

For example X waist location is already perfect, the waist size is smaller than ideal and the Gouy separation seems to be 114 deg or some such. Y should be worse.

Before calling it a day, we looked at RMs and one of the eddy current dampers for RM2 was significantly closer to the mirror holder than everything else, so it was backed off.

Comments related to this report
jameson.rollins@LIGO.ORG - 10:53, Wednesday 18 December 2013 (9002)

We took pictures of the REFL path in HAM1 while we were in there, including overview pictures the RM mirrors, the WFS sled, and the REFL PDs.  These have been uploaded to ResourceSpace: