Agenda/Minutes of the VIS Meeting on 2018/4/6
2018/4/6 13:30 - 14:50
Participants: Enzo, Shoda, Takahashi, Aso, Tanaka, Okutomi, Sato, Tanioka, Fujii, Ishizaki, Hirata, Mark
Progress report
Schedule Chart
Type-A : (PDF/MPP)
Type-B: (PDF/MPP)
Type-A (Takahashi)
Past week report
[X-front]
- Lifted up the EQ stop to access the F3 and recovered the touching problem in the F3.
- Lifted down the EQ stop again. Extended the EQ stop to the F1 stage.
- Tuned the F1. The lowest frequency was 0.45Hz. When the filter was suspended with the cap, it went to the bi-stable.
- Decompressed the blades. Finally the frequency was around 0.5Hz.
- Checked the FR in the F1. Adjustable rage of keystone was +/- 4mm.
- Cabled around the F1 and checked the cable connection.
- Lifted down the EQ stop. The end plate for the F1 was sit on the frame lock.
- Extended the EQ stop to the top ring.
[X-end]
- Adjusted the height of filters.
- Connected the PT100 sensor to the monitor line for CRY.
- Check the FR range in the BF.
Plan for coming weeks
[X-front]
- Set the bridge frame.
- Prepare for the pre-isolator.
Type B (Mark)
Report for week of 4/2
- Fujii-kun and Yamamoto-kun got the SR3 real time model running.
- We received the SR3.
- However Mark and Tanioka-kun found Hirose-san had applied the First Contact patterns on the wrong sides, so we took it to Yamamoto-san's lab and Toyama University and re-applied the FC properly. We also bounced a 1064 nm beam off it to verify that the HR and AR coatings were not also swapped (they were OK).
- We made magnet-standoff assemblies for both SR3 and SRM, and set up for gluing the prisms and magnets. We will attach the prisms and magnet-standoffs on Monday.
- Hirata-san did inventory of the SR3/SRM payload parts received last week and started on the inventory of screws.
- Fujii-kun, Enzo and team finished the preparation, adjustment of the SFs and BFs.
- They calibrated one SF and BF. (The remaining one SF and BF will take about another day. Also, the FR stops need to be checked.)
- Enzo and Kozu-kun finished setting up the SR3 and SRM racks. (The SRM rack still lacks a front-end, and power and network connections, but the SR3 is now ready for testing.)
- Shoda-san worked on getting quotes for the ballast masses, on design of the SRM metal mass, and on splitting the BS model to reduce the load on the front-end computer.
Plan for week of 4/9
- Shoda-san at Mitaka
- Fujii-san at Mitaka
- Tanioka-san at Kamioka, but possibly doing PEM stuff.
- Others at Kamioka
- --
- Finish SRM BF and SF calibration
- Finish IMs and IRMs
- Glue SR3 mirror
Plan for week of 4/16
- Shoda-san at Mitaka
- Fujii-san at Mitaka
- Tanioka-san at Mitaka?
- Others at Kamioka
- --
- Build 1xRM
- Start SR3 Hang
- Align assembly frame.
Plan for week of 4/23
- Shoda-san at Mitaka
- Fujii-san at Mitaka?
- Mark, Enzo at Kamioka
- Hirata-san at Mitaka
- Tanioka-san at Mitaka?
- --
- Clean parts (cable clamp bases, etc, etc).
- Observe KAGRA Phase 1 operations, assist if problems arise.
Plan for week of 4/30
- Golden Week!
To-Do Lists, Schedule
Vacation Info
- Fabian vacation, 3/26-4/27 (then gone).
Type-Bp (Shoda)
Past week report
- I found that the most of the magnet direction of PRM IM flag are facing wrong. We should fix the consistency with the compensation magnets at some point.
- We will schedule this work in June - July time frame.
- Two days are required to complete the task
Plan for coming weeks
OMMT & OSTM (Ohishi)
Past week report
Plan for coming weeks
Watchdog system (Tanaka)
Past week report
Plan for coming weeks
Other site works
- Monthly crane inspection: 11:30 - 12:30 April 16
Safety
- Incidents: no incident
- Foreseen risks
- Type-A: Crane
- Type-B: Working with springs
Discussion
- ETMY repair
- F1 and F2 may be dead (the GAS is stack)
Noise calculation by Okutomi
- Two peaks go above the requirement (with a safety margin of 10) near 10Hz.
- This excess noise seems to be acceptable
- Propose to postpone the repair of ETMY to after O3 at the extended chief meeting.
- F2F talk
- Request two slots (30min)
- Type-A (10min), Type-B (10min), Control (10min)
Travel Plans
- Travel (Week of 4/9):
- Takahashi: 10 - 13
- Okutomi: 9 - 13
- Sato: 9 - 13
- Ishizaki: 9 - 13
- Mark: 9 - 13
- Hirata: 9 - 13
- Enzo: 9 - 12
- Shoda:
- Ohishi:
- Fujii:
- Tanioka: 9 - 13
- Tanaka:
- Kozu (ICRR): 9 - 13 ?
- Arai (ICRR):
- Travel (Week of 4/16):
- Takahashi: 16- 20
- Okutomi: 16- 20
- Sato: 16- 20
- Ishizaki: 16- 20
- Mark: 16- 20
- Hirata: 16- 20
- Enzo: 16- 20
- Shoda:
- Ohishi:
- Fujii:
- Tanioka:
- Tanaka:
- Kozu (ICRR): 16- 20?
- Arai (ICRR):
Next meeting
On 2018/4/13(Fri)