Agenda/Minutes of the VIS Meeting on 2016/9/2

2016/9/2 13:30 - @ Room 210

Participants:

Progress report

Schedule Chart (PDF,MPP)

Type-A (Takahashi)

• Minutes of Type-A Meeting

• Top chamber: Installation and leak test will be postponed to January due to delay of cooling test of the cryostat.
• EQ stop, release sensor, dummy payload: Procurement is in the bidding process. Open bidding is on 13th September.
• BF damper: Assembling the LVDT prototype.
• Maraging wire: Stress concentration around the head was pointed out by CRY. Now investigationg.

Type-B (Mark)

• Put a report her

Type-Bp (Shoda)

• Type-Bp modification
  • Saito-san made some updates around the LVDT coils. Shoda is implimenting them into the 3D CAD model.
  • Obuchi-san provided the result of the structure analysis. Shoda will gather the information and write the design document.
  • Saito-san is asking the cost estimate to Techno-port and still waiting for the reply. We asked him to ask the cost estimate to another company.
  • Shoda is preparing the specification sheets for the ordering.
  • We are planing to have the final design reciew from 12 - 14th September.
• Additional ordering for PRs.
  • additional masses for IM: Hirata-san made the drawing.
  • additional masses for BF: Shoda is making the model.
  • IM flags: Hirata-san will make the drawing for the additional machinig.
  • TM flags: Discussion is ongoing with Aso-san, Mark, and Hirata-san. (Old design parts will be ordered together with BF modification parts just in case.)
  • 1st wire breakers: will be ordered with BF modification parts
  • 2nd wire breakers: will be ordered with BF modification parts
  • the correts for the hexagon cable clamps: the CAD model of the maraging rod is wrong. Re-design will be done by Hirata-san.
  • maraging rods for BFRM: will be ordered with Type-A maraging rods.
  • signal cables: will be ordered with Type-A.
  • BF EQ stop ring: will be ordered together with the assembly frame.
• Assembly frame
  • Design is almost fixed: shown via Seevogh
• Optical bench
  • Installation jigs: shown via Seevogh
  • Adapters: shown via Seevogh
  • wires: shown via Seevogh (the hook analysis is necessary?)
  • missing hooks: shown via Seevogh
  • Shoda is preparing the specification sheets for the ordering (together with the assembly frame).
• Washing
  • EQ stop: 3sets are in Akeno, un-washed. Takahashi-san will order the washing.
  • OB-IM, OB-MD: 3sets are not ordered yet. Takahashi-san will order them.
• Bottom filter cup

  • The thickness of the top plate of the cup is different from the design. (12mm -> 11mm)

• Mirror preparation
  • Hirose-san and Shoda are preparing jigs for the flag detaching. [[|Catoon]]

• A/I

  • Prepare for the final design review. (Shoda)
  • Make the design document (Shoda, Fujii)
  • Ordering preparation (Shoda)
  • Design work around flags (Hirata, Mark)

IMMT (Ohishi)

• Put a report here

Watchdog system (Tanaka)

• Progress report(For Power circuit re-design)PDF

Safety

• Any issue ?

Discussion

• Insufficient strength of the maraging rods ?
• Local sensor to monitor the TM motion during assembly

Site work plan for the next week

• Mon: BS test hanging (Mark, Fabian, Zhao)
• Tue: BS test hanging (Mark, Fabian, Zhao)
• Wed: BS test hanging (Mark, Fabian, Zhao)
• Thu: BS test hanging (Mark, Fabian, Zhao)
• Fri: BS test hanging (Mark, Fabian, Zhao)

Travel Plans

• Travel (Week of 9/5):
  • Takahashi:
  • Shoda:
  • Mark: 5 - 8
  • Fabian: 5 - 8
  • Okutomi:
  • Fujii:
  • Ishizaki:
  • Hirata:
  • Sato:
  • Ohishi:
• Travel (Week of 9/12):
  • Takahashi:
  • Shoda:
  • Mark: 12 - 15
  • Fabian: 12 - 15
  • Okutomi:
  • Fujii:
  • Ishizaki:
  • Hirata:
  • Sato:
  • Ohishi:

Next meeting

2016/9/9(Fri) 13:30 - in Mitaka