This is the same report with more information.

With Takahashi-san and Hirata-san

See pictures in album PR3 Remedying Work.

We succesfully applied glue to the wires holding the PR3 mirror. We followed the procedure JGW-T2011878. We left the payload locked and the RM partially disassembled. Once the adhesive is cured we will assemble it again and release the payload.

• We set up an oplev with a laser level and a ruler, and we measured the position of the beam reflected by the back of the mirrror. See pictures in the album. As written in this notebook page, such a position is 8.1 cm. In the same page it is reported that the distance from the ruler to the back side of the back ring of the RM is 169 cm measured with a tape measure. The distance from the back of the back ring to the mirror surface is 23 mm. Therefore the distance from the ruler to the mirror is approximately 171.3 cm. 
• We locked the IRM, IM, RM to the security structure (in this order).
• We locked the mirror to the RM.
• We locked the the RM to the IM using one of the vertical bars. We used only one out of two because a cable was on the way of the fastening screw used for the second one. See this picture.
• We removed the screws holding the FRONT ring (I wrote back ring in the original report but that was wrong). They were not tightened strongly and they were easy to remove. Using one locking bar was fine.
• We prepared the adhesive EP-30 without the beads according to JGW-E1605505.
• With a small stainless steel spoon, Hirata-san applied the adhesive to the wires in four places, two for each wire. We selected positions in which the friction beween the mirror and the wires was expected to be low. See this diagram.
• See photos in the album. For convenience I attach a few of them here.

The adhesive didn't cure completely today, so we didn't do anything.

This is a report about the work on Friday 29th of January.

With Hirata-san and Takahashi-san.

The adhesive still didn't cure, which is unusual.

In order to test the adhseive we prepared two more portions of the mix, one in an aluminium baking tray and the other in a plastic petri dish. We'll check on Monday whether they cured or not. 

With Takahashi-san and Hirata-san

See pictures in album PR3 Remedying Work.

The two portions of the adhesive we prepared on Friday cured well, as usual. However, the one we used on Wednesday for gluing the wire didn't. We unfolded the tray where I prepared the failed mix and it seems the component with low viscosity may have gone in between folded sheets of foil and did not mix well. See a picture of the unfolded tray here. 

It was considered that cleaning the uncured adhesive was difficult, so we just prepared  a fresh portion of adhesive in a plastic tray and applied it above the places where we applied in on Wednesday. See this diagram.

Tomorrow we will release the payload.

With Hirata-san.

See pictures in album PR3 Remedying Work.

The adhesive cured well, so we put the front ring of the RM back in place and released the payload. 

Then we turned the oplev laser level on and checked the position of the reflected beam on the ruler. It was 87.5 mm as shown in this picture.

I'll report in another entry by how much we disturbed the pitch. 

The pitch of the mirror changed when we glued the mirror and the relative change was measured with the oplev.

Height of the oplev beam on ruler:

• Before locking: 81 mm (klog15852).
• After releasing: 87.5 mm (klog15885).
• Distance between the mirror and the oplev ruler: 1713 mm (klog15852).

Therefore, the relative change in pitch is +3.8 mrad approximately, which is a lot. The value of pitch with respect to the horizontal still has to be measured.