(Kiwamu, Jax, Stefan)

We entered HAM1 today to get the REFL beam out. In order to maximize the power from the Refl port for the HIFO work, we removed both beam splitters from the path , and adjusted the steering mirror to hit the top of the periscope on ISCT1. (The beams from the splitters were previously just dumped - one of them is designed to be a dump, the other is intended for the in vacuum refl sensors), We also used the opportunity to check that the ther beams (green from arm and red to SHG), were well aligned.

Note that with the PRM aligned, the gives us about a Watt in ISCT1, which is currently also in the wrong polarization. We dumped the beam riht after the periscope, but we also layed a beam bump under the periscope - due to the wrong polarization a significant amount of light goes through the bottom periscope mirror.

This should allow us to close HAM1 again on Friday.