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

Looking for jig parts http://klog.icrr.u-tokyo.ac.jp/osl/?r=2439

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