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VIS (EX)
takaaki.yokozawa - 18:10 Thursday 24 June 2021 (17267) Print this report
Oplev preparation work EX
[Ushiba, Kasamatsu, Chiba, Yokozawa]

Today, we prepared oplev in Xend.

1. Set whitening filter circuit.
S1605072 Board1: TM PY Board2: TM L (Not changed)
S1605082 Board1: MN PY Board2: MN L (Removed old MN oplev cables)

S1808660(New) Board1: MN YR Board2: MN T
S1808661(New) Board1: MN V

S1909734(New) Board1: PF PY Board2: PF L
S1605077(Moved) Board1: PEM seismometer

S1909740(Moved) Board1: TM Coil driver mon (Need???)

During moving work, we turned off the two whitening filter circuits for a while as posted in klog17261

2. Connect the whitening filter circuits and AA filter circuits(2m D-sub 9 cables)

3. Turned on whitening filter circuits

Afternoon, we placed beam splitter on the oplev receiver table for length oplev.
After placing the beam splitter, we moved tilt QPD to set the point to zero.(See figure)
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Comments to this report:
takafumi.ushiba - 20:05 Thursday 24 June 2021 (17269) Print this report

Additional information for making rack layout.

42: S1605072
41: S1605082
40: rail
39: S1808660
38: S1808661
37: rail
36: S1909734
35: S1605077
34: rail
33: S1909740
32: rail

takafumi.ushiba - 22:49 Thursday 01 July 2021 (17359) Print this report

[Chiba, Kasamatsu, Tomaru, Yokozawa, mTakahashi, Ushiba]

For the OPD cabling, four 20-m cables and two 30-m cables are set from the EXV area to EXC area today.
20-m cables are slightly short to complete cabling to the whitening filters, so we need to add 3-5 m long cables for them.

takaaki.yokozawa - 7:29 Friday 02 July 2021 (17362) Print this report
Additional information

When we tried to perform cabling, we found there are large hole at the ceiling of the EXC clean booth.
Tomaru-san fixed it by adding the vinyl after cabling.

Remaining task:
Set QPD circuits
Finalize the cabling path on the cryostat
Check the QPD signal by DGS
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