[Rodica M., Deepak K., Chris M.]

Today we resolved the issue with IM3 which turned out to be an earthquake stop rubbing.  It isn't clear how this became an issue after pumping down, perhaps it slipped in over time.  See the attached transfer functions for an idea of the badness and subsequent goodness.  

After we were allowed to turn on the laser we double checked the centering on the IMC mirrors which seems very good to us.  We added an iris at MC2 to double check the 'by eye' centering which was done at the end of last week, and the beam looked very good.  We also installed the MC2 scraper baffle.  

Tomorrow we will check the alignment of the components downstream of the IMC.  Afterwards we will align the MC refl beam onto the trans beam path and use it to align the auxiliary paths and measure mirror transmissivities.