Agenda/Minutes of the VIS Meeting on 2017/2/10

2017/2/10 13:30 -

Participants:

Progress report

Schedule Chart : (PDF,MPP)

Type-A (Takahashi)

Past week report

• Minutes of Type-A Meeting

• Installation in Y-end
  • 7(Tue): Assembled the dummy payload and the EQ stop for it. Pre-assembled BF damper. Assembled the EQ stop for BF.
  • 8(Wed): Assembled the BF. Measured the weight of BF (105.7kg).
  • 9(Thu): Installed the dummy payload and the BF with athe EQ stop into the top chamber.
• Maraging wire: The wires after aging were delivered on 7th. The 3.3m wire will be treated at Himeji facility of Kinzoku-giken.

Plan for coming weeks

• Install the protection net ring.
• Tune the weight of dummy payload.
• Assemble the BF damper with the support ring.
• Lift down the dummy payload.
• Set the EQ stop for F3.

Type B (Mark)

Past week report

Plan for coming weeks

Type-Bp (Shoda)

Past week report

• Main suspension
  • Active damping for IM are implemented.
  • BF FR was tested with the new driver chassis.
  • BF GAS LVDT was calibrated by inserting 1 mm sims.
  • New BF LVDTs are assembled.
  • BF cap, BFRM, and the EQ stop parts bewlo the SF are assembled.
    • The BFRM is now sitting on the spacer attached on the BF.
  • Note: the company delivered other coated screws for the screws which we assigned as SDC with a vent hole. Be careful.
• Optical bench suspension
  • Optical bench installation jigs, wire adapters for the optical bench, and optical bench suspension rods are assembled.
  • The OB installation jigs was tested a little.
• Others
  • The temporally clean booth was cleaned and the floor sheet will be changed.

  • The EQ stop bars below the IM did not seem to be dirty now. -> Only old aluminum parts should be re-made.

  • BFRM suspension rods are delivered -> 2nd assembly test at Mitaka?

Plan for coming weeks

• Optical bench suspension test.
  • Assemble magnets on the OB Damper
  • Suspend the OB damper, OB intermediate mass, and OB for the test.

IMMT (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

Plan for coming weeks

Safety

• Incidents:
• Foreseen risks
  • Type-A:
  • Type-B:
  • Type-Bp:

Discussion

• Disassembly procedure proposal (Shoda) document

Site work plan for the next week

• Mon: Type-A, B, Bp
• Tue: Type-A, B, Bp
• Wed: Type-A, B, Bp
• Thu: Type-A, B, Bp
• Fri: Type-A, B, Bp

Travel Plans

• Travel (Week of 2/13):
  • Takahashi: 13-16
  • Shoda: 13-16
  • Mark: 13-16
  • Fabian: 13-16
  • Okutomi: 13-16
  • Fujii:
  • Ishizaki: 13-16
  • Hirata:
  • Sato: 13-16
  • Enzo:
  • Hashimoto (Hosei Univ.): 13-16
  • Someya (Hosei Univ.): 13-16
  • Ohishi:
• Travel (Week of 2/13):
  • Takahashi:
  • Shoda:
  • Mark:
  • Fabian:
  • Okutomi:
  • Fujii:
  • Ishizaki:
  • Hirata:
  • Sato:
  • Enzo:
  • Hashimoto (Hosei Univ.):
  • Someya (Hosei Univ.):
  • Ohishi:
  • Tanaka:

Next meeting

On 2017/2/17(Fri) in Mitaka

March VIS F2F: March 3