VIS Meeting on 2015/12/25

2015/12/25 13:30 -

Kamioka TV conference room + SeeVogh

Participants:

Schedule

Schedule status (Aso)
- Latest schedule chart

PR

Test Hanging Status (Takahashi)
- Transfer function measurements (Shoda)
- OpLev (Shoda)
- Mirror orientation confirmation (Shoda)
PR2 Status (Mark, Fabian)
- Flag preparation status (Fabian)
- Spare flag order status (Takahashi)
We need to secure things for water using Sunoko (duckboard).
Location of the EQ stop pillars (Takahashi)
- Locations were reported by Takahashi
  - Interference with OpLev (Akutsu)
Digital System (Okutomi, Fujii)
BF Optimal Weight (Takahashi)
- Check the optimal load for the ETM BFs at the ATC: Need to be done before the end of Jan. Arrange with ATC people (Takahashi) -> Status
- Balast mass design: Fabian will talk with Hirata on Monday. -> Status
Traverser actuation check (Shoda)
- Need to check the condition of the traverser. -> Status (Shoda)
Traverser stop mechanism
- Procurement status (Takahashi): Parts were delivered. Clean the parts on Monday (Hirata). -> Status
Clean work procedure
- Order clean wipes (Aso)
- KAGRA should have a special meeting for clean requirements: Will propose another meeting. (Aso)
PR CAD model and assembly drawings (Hirata)
- Need to give the rotation angle of the traverser top plate (Aso)
Cable status (Takahashi)
- All the cables except for two cables were delivered.
  - Need to send more PTFE cable to finish the remaining two -> status
  - Need to send the cables used for the test hanging once it is finshed.
- Made a cable list -> Put a link to the excel file on Wiki. Takahashi will improve the table.
Cable check
- 70% done.
- One cable found to be broken. Will send it back to the company -> status
Call for shift for assembly help (Takahashi)
- Made a call for shift for helping the installation works -> status
PR2 wire breaker problem (Mark, Tatsumi)
- Removal of the wire breakers (Mark)
- SUS wire breaker order status (Takahashi)
Wire cleaning (Hirata)
- Hirata will order 20m more wires. -> Delivered. Will wipe in the next week. -> Status
- Will wash Tungsten wire delivery status -> Delivered. Will wipe in the next week -> Status
Production of additional PR winches (Akutsu)
- 650um Tungsten wire test with 9.2kg is fine
- Will test with 200um wires on Monday (7.2kg) with improved mass clamps (Hirata). -> Status
RM compensation mass
- Need to buy screws for fixing the compensation masses.
  - M6-16mm and M6-20mm are necessary. -> are these available ?
PR Optical Bench (Akutsu)
- For PR2, we do need to raise the optical bench.
  - Delivery date for the screws: Dec. 21
  - PR2 vacuum installation will be Jan. 19
OSEM assembly status (Akutsu)
RM production (Takahashi)
- What to do with the dirty RMs ?: Check with ATC if re-polishing the rough surface is possible or not (Takahashi) -> status ?
List of what should be changed for PR3 hanging
- People should share ideas whenever they come up with missing thigns.
- Shoda made a spread sheet for keep tracking the ideas
  - https://docs.google.com/spreadsheets/d/1zZaLObWjDSEOTrr85Hz0ApXxEUChK3xJ_chk0f7r5nY/edit?usp=sharing
Missing items(to be purchased soon)
- Picomotor drivers (Takahashi)
- Signal generators for LVDTs (Aso) -> Asking for quotation
- Serial-Ethernet converter: 7 more (Shoda) -> Asked Ishizaki-san to buy them
- Traverser motor driver (Shoda)
- Turn backles (bigger and eye). Smaller shackles. (Aso) -> TBD
Next week (from 1/4) plan
- Test hanging
  - Mon:
  - Tue:
  - Wed:
  - Thu:
  - Fri: F2F@Mitaka
- PR2
  - Mon:
  - Tue:
  - Wed:
  - Thu:
  - Fri: F2F@Mitaka
Travel (Week of 1/4)
- Takahashi: Mon-Thu
- Shoda: Mon-Thu
- Mark: Mon-Thu
- Fabian: Tue-Thu
- Okutomi: Mon-Tue (available)
- Fujii:
- Ishizaki:
- Hirata:
- Ohishi:
Travel (Week of 1/11)
- Takahashi:
- Shoda:
- Mark:
- Fabian:
- Okutomi:
- Fujii: -
- Ishizaki:
- Hirata:
- Ohishi:

* Joris: 1/11-1/29

* 1/18 Sekiguchi-kun's PhD defense

BS

BS Assembly Frame Design (Aso, Hirata)
BS flag design (Mark, Fabian)
BS gluing jigs (Tatsumi)
Not enough crane height problem (Hirata, Saito)
IP base clamp (Fabian)
Bread board spring (Takahashi)
BS clean bag (Aso)

ETM

ETM assembly frame (Aso)
- Ordering in progress

Other

bKAGRA preparation
- List of tasks for: BS, Type-A, Type-Bp modification, IMMT (Takahashi) by the end of the next week. Set up a Wiki page (Aso)
Watch dog system (Tanaka)
- Will present at an AEL meeting.
GAS blade inspection by Virgo (Takahashi)
- To be shipped soon: Check the deadline for Virgo (Takahashi) -> Status
Type-A Filters Optimal Load Measurements
- If we can get help from ATC to measure the optimal load in Mitaka, it will be good.
- Takahashi will make a plan for the optimal load check and ask ATC.-> Status ?
- How to manufacture the long maraging wires ?
  - One prototype was machined by Ojima
  - Aoshima can do the heat treatment for the long rod. Will ask them soon (Takahashi) -> Status
  - How to test it ?
    - Use the unused assembly frame for Type-B ?
Safety at the site (Takahashi, Ishizaki)

Next meeting

2015/1/8 (Fri) 13:30 - F2F@Mitaka