KAGRA Logbook

VIS (BS)

tomotada.akutsu - 18:59 Monday 24 July 2017 (3143)

Viewport replacement at BS

[Kokeyama, Hasegawa, Akutsu]

In iKAGRA, BS oplev looked at the HR side. AOS likes to take the same policy of oplev setup for BS as the other mirrors, that is, using AR side for oplev in principle.

We started to modify the BS oplev setup with installaing viewport windows. Today (new) ICF152 oplev viewports, S/N#0033 and 0034, were installed to the BS chamber at the AR side (-Y/+X side); see Fig. 1 and 2. Fig. 3 shows both of the viewport windows.

In addition, the old ICF152 oplev viewport at the HR side (and upper side) was replaced with an general purpose viewport (ICF152, GPViewport S/N#001), which will be used for camera. (Fig. 4)

Images attached to this report

Comments to this report:

tomotada.akutsu - 18:33 Tuesday 25 July 2017 (3148)

[Kokeyama, Akutsu] Continued works from yesterday.

We sealed a viewport in front of the oplev pylon (in the current position; -X+Yside) by a blank flange.

The two breadboards with oplev setup are now contained in two boxes and left at the foot of the SR2 chamber.

Images attached to this comment

tomotada.akutsu - 10:11 Thursday 27 July 2017 (3166)

On July 26.

Moved the oplev pylon to the new location, and washed the anchor holes there, and fixed the pylon, and put the breadboard with TX on it, and then fixed the breadboard with the pylon.

Note that the upper breadboard (RX) is still left at the foot of the PR2 chamber.

Images attached to this comment