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Size: 3825
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Size: 3825
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| On 2018/8/23(Fri) | On 2018/8/31(Fri) |
Agenda/Minutes of the VIS Meeting on 2018/8/10
2018/8/10 13:30 - 14:38
Participants: Mark, Takahashi, Enzo, Aso, Ohishi, Sato, Fujii, Fabian, Okutomi, Hirata, Lucia, Panwei, Terrence, Kozu, Hatoya, Enzo
Progress report
Schedule Chart
Type-A : (PDF/MPP)
Type-B: (PDF/MPP)
Type-A (Takahashi)
Past week report
[Y-front]
- Put the ballast mass of 15.1kg on the keystone. The height of keystone was 10.0mm.
- Calibrated the LVDT.
- Checked the relative height of the F1 damper.
- Dismounted the pre-isolaotor and the bridge frame from the foothold.
- Implemented the cables between the F1 and the PI.
- Lifted down the EQ stop into the corrugate tube. The top ring sit on the frame lock.
- Adjusted the rotational direction and the center position of the EQ stop.
- Installed the PI into the top chamber.
- Hooked the wires to the receptacles. The filters were suspended from the TF.
- Removed the wire clamp.
- Implemented the cables from the PI to the feed through flanges.
- Started the tuning of TF. Digital output for the coil driver did not work.
[X-front]
- Released the BF.
Plan for coming weeks
- Setting of the pre-isolator in Y-front (tuning of TF, calibration of LVDT, tuning of IP).
- Setting of the pre-isolator in X-front (additional FR, yaw actuator).
Type B (Mark)
Past week report
Plan for coming weeks
Type-Bp (Shoda)
Past week report
Plan for coming weeks
OMMT & OSTM (Ohishi)
Past week report
- Have ordered 34 kinds of OMMT/OSTM suspension mechanical parts. Will be delivered by Oct. 6th.
Plan for coming weeks
- Order remaining 26 kinds of parts.
VIS electronics (Tanaka)
Past week report
Plan for coming weeks
Other site works
- Sept 3 (Mon): Crane inspection 9:00 - 12:00
- Sept 5 (Mon): Crane inspection 9:00 - 13:00
- Sept 10(Mon): Planned power outage
Safety
- Incidents: no incident
- Foreseen risks
- Type-A: Crane work
- Type-B: Crane work. Transport heavy arc weights
Discussion
- Satellite box modification
- The chassis is not connected to the electric ground.
- AEL is planning to fix the connection
- OSEM read out path has a strange bump in the transfer function between 10Hz and 100Hz.
- DAC channel rearrangement
https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8689
- VIS agrees to this proposal
- SRM metal mirror
- Hirata-san will design jigs to avoid the container to touch the black surface
- Arrange with Hirose-san on how to test the SRM-M in Caltech
Travel Plans
- Travel (Week of 8/13):
- Takahashi: 15-17
- Okutomi:
- Sato:
- Lucia: 15-17
- Ishizaki:
- Mark:
- Hirata:
- Enzo: 15-17
- Terrence: 15-17
- Shoda:
- Ohishi:
- Fujii: 15-17
- Tanioka:
- Tanaka:
- Kozu (ICRR): 15-17 ?
- Arai (ICRR):
- Travel (Week of 8/20):
- Takahashi: 20 - 24
- Okutomi:
- Sato: 20 - 24
- Lucia: 20 - 24
- Ishizaki:
- Mark: 20 - 24
- Hirata: 20 - 24
- Enzo: 20 - 24
- Terrence: 20 - 23
- Shoda:
- Ohishi:
- Fujii: 20 - 24
- Tanioka:
- Tanaka:
- Kozu (ICRR): 20 - 24
- Arai (ICRR):
Next meeting
On 2018/8/31(Fri)