Washimi, Akutsu

Summary

Detached two of the shield plates off the OMMT1 suspension structure, two off the OSTM susp str, and one of the beam dumps surrounding the OMC, as requested by R. Takahashi.

Details

Fig. 1 was sent to us by R. Takahashi-san, where he requested to detach parts indicated by blue and red arrows. According to this request, we detached:

• OMMT1: two of the shield plates (Figs. 2 and 3) in the plus Y and plus X directions. The detached ones are located in the OMM chamber in the plus Y direction-ish (Fig. 4).
• OSTM: two of the shield plates (Figs. 5 and 6) in the minus Y and minus X directions. The detached ones are located in the OMM chamber in the minus Y direction-ish (Fig. 7; compare with Fig. 4 for the difference).
• OMC: one of the beam dumps (shown with a red arrow in Fig. 1) detached; before detaching it, I left a white tape (and a marker line) on the optical table so that we can get it back to the origina location andl alignment easily (Fig. 8). The detached one is located in the nearby desiccator (Fig. 9).

Finally the remaining photos (Figs. 10-12) are showing inside the OMC chamber after detaching the above reported.