Agenda/Minutes of the VIS Meeting on 2017/11/17
2017/11/17 13:30 - 14:15
Participants: Mark, Takahashi, Arai, Sato, Fabian, Aso, Enzo, Hirata, Ohishi, Shoda, Okutomi
Progress report
Schedule Chart
- Type-A: On schedule for the cable exchange (a bit faster than expected)
- Type-B: Preparing for the SR2 assembly.
Type-A (Takahashi)
Past week report
[X-end]
- Started the replacement of cables from 15th.
- Dismounted the pre-isolator.
- Removed the cables above the F1.
- Removed some screws from the inside of F1.
[ITM]
- The items from Akeno and Mitaka were delivered on 14th.
- Transported the bridge frame from the X-end to the center area on 14th.
- Lifting up the items to the 2nd floor by MESCO on 17th.
Plan for coming weeks
- X-end: Reassembly of the EQ stop and the cabling from 20th.
- Y-end: Connection to the cryo-payload from 27th.
Type B (Mark)
Past week report
Plan for coming weeks
Type-Bp (Shoda)
Past week report
- Top rid of PR2 and PR3 vacuum tank were fixed
- Note that the feedthrough flanges are not closed yet.
- During the fixing, we accidentally moved the injection beam of the Oplev. Alignment was lost.
- We need to re-align the main beam. So far, we are planning to do it in the week of the commissioning WS.
- PR mirror position was measured by FARO.
- The position of the mirror is off from the design by:
- PR2: (-9.4, +0.5, -6.4)
- PR3: (-3.5, -0.5, -4.9)
- PRM: (+4.7, 4.6, -1.5) Note: PRM is fixed
- Note that these values are relative to the side flange of the vacuum tank at the HR side. x is the norm of the flange surface, and z is the norm of optical bench.
- The position of the mirror is off from the design by:
Plan for coming weeks
- Release PRM. Setup the oplev
- WD test
OMMT & OSTM (Ohishi)
Past week report
- Checked and ordered missing parts of hanging jig.
- Checked glueing jig parts.
Plan for coming weeks
- Order some glueing jig parts that have defect.
Revise Type-C assembly manual.
Past week report
Plan for coming weeks
Other site works
- Crane inspection: Nov. 22 11:30 - 12:30
- Commissioning Workshop: Nov. 27 to Dec. 1st
Safety
- Incidents: no incident
- Foreseen risks
- Type-A: Crane work
- Type-B: no Kamioka work
- Type-Bp: Do not bump the mirror in PRM release.
Discussion
- We will have a brainstorming on how to swap the payload or mirror quickly in the next week.
Travel Plans
- Travel (Week of 11/20):
- Takahashi: 22 - 24
- Okutomi: 20 - 24
- Sato: 20 - 24
- Ishizaki: 20 - 24
- Mark:
- Fabian:
- Hirata:
- Enzo:
- Shoda: 20 - 22
- Ohishi:
- Fujii:
- Tanaka: 20 -22
- Kozu (ICRR):
- Arai (ICRR): 20 - 24
- Travel (Week of 11/27):
- Takahashi: 27 - 12/1
- Okutomi: 29 - 12/1
- Sato: 27 - 12/1
- Ishizaki: 27 - 12/1
- Mark: 27 - 12/1
- Fabian: 27 - 12/1
- Hirata: 27 - 12/1
- Enzo: 27 - 12/1
- Shoda: 27 - 12/1
- Ohishi:
- Fujii:
- Tanaka:
- Kozu (ICRR): 27 - 12/1
- Arai (ICRR): 27 - 12/1
Next meeting
On 2017/11/24(Fri)