Abe-san, Aso-san, Marc, Michael

For reference, ETMY cleaning is summarized in KLOG entries : 17219, 17271, 17292, 17311, 17397, 17409

We brought the ETMY inside PCI room using the crane.

We added HEPA filters and put an ion gun at the end of the pressured air.

We remove optics from the small optical table on the side of the PCI setup and installed ETMY box on it.

Using a strong green light and a strong white flashlight we inspected and slightly cleaned the AR surface using ultra pure water and the ion gun.

On this table, we installed ETMY inside its holder using 4 jacks.

In order to avoid incident, we removed the entire imaging unit optical table to ease the ETMY installation on the translation stage.

Before doing so, we had installed pairs of forks on 3 of the 4 pillars to be sure to recover the same imaging unit position.

We installed ETMY on the translation stage (the additional weight due to the jig is negligeable because the translation stage can hold few hundreds kg).

We removed the HR surface first contact while using the ion gun.

To avoid scratching ETMY surface or magnets, we decided to let a metal ring at the edge of the mirror surface.

We reinstalled the IU and turning on the probe beam showed that this beam was still hitting well on the IU optics.

I don't have so much pictures but we'll add beautiful ones to this entry.

This morning  we set up translation stage limit along the Z axis. We are now not letting ETMY get closer than 1 or 2 cm to both side.

There are now really strange troubles with Zaber that does not recognize the translation stage (or any com port) even if it is working fine in labview..

We will solve this issue before any translation stage motion.