Agenda/Minutes of the VIS Meeting on 2017/12/22

2017/12/22 13:40 - 14:40

Participants: Takahashi, Okutomi, Shoda, Sato, Ishizaki, Ohishi, Aso, Tanaka

Progress report

Schedule Chart

Type-A : (PDF,MPP)

Type-B: (PDF,MPP)

• Type-A:
• Type-B:

Type-A (Takahashi)

Past week report

[X-end]

• Prepared for the geophones with pods.
• Mounted the geophones on the top filter.
• Tuned the F0.
• Tuned the IP.
• Closed the top chamber.
• Prepared for the power outage.

[Y-end]

• Opened the cup of BF.
• Repaired the jamming of FR.
• Aligned the cryo-payload by the yaw picomotor in BF.
• Tested the FR in BF. The mirror can move +/- 2mm.
• Closed the cup of BF.
• Released the BF.
• Tuned the F0, Adjusted the IP position and the yaw rotation on the TF.
• Closed the top chamber.

Plan for coming weeks

• X-end: Start pumping down from Wednesday afternoon.

Type B (Mark)

Past week report

• Mark created screens and a macro.txt file for the SR2 and linked to them from the VIS screen.
• Enzo and Mark did a new overview screen for the BS.
• Enzo added DIO cards to the rack and connected them to the coil drivers.
• Fabian and Kozu-kun finished assembling the IM and tested the picos over their full range.
• Mark and Hirata-san configured and aligned the assembly frame and optical table and craned in the IM ring.
• Hirata-san noticed some oxidization on several of the L-brackets that will hold the IM horizontally, and we should get them cleaned or machined, but we can probably continue with hanging the system in the meantime.

Plan for week of 12/25

• Power outage 12/25.
• Mark, Enzo, Fabian vacation
• Shoda-san, Kozu-kun, Hirata-san at Kamioka - Hirata-san from Tue, others TBD.
• Recover after power outage.
• Create SR2 real-time model.
• Install new jack receptacles (in SR3 area, second floor) on load gauge adapter (SR2 area, second floor). (Hirata-san)
• Weigh IM (per Fabian's note in the paper log).
• Remove L-brackets from bars on IM ring - send for cleaning/remachining.
• Setup OL for checking pitch of SR.
• Wipe/blow dust off SR2 frame.
• Crane IM into frame.

Plan for week of 1/9

• Mark, Fabian, Enzo, Shoda-san at Kamioka Tue-Fri.
• Hang SR and RM.

Vacation Info

• Mark 12/22-1/3

• Enzo, 12/21-12/27 (but not 12/28)

• Fabian 12/22-1/5

Type-Bp (Shoda)

Past week report

Plan for coming weeks

OMMT & OSTM (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

• Start ordering mass production version.-->Order request has been completed(To order the University of Tokyo).

  • Start other ordering.-->Completed(but some will be next year).

• I reconfirmed the other necessary items.-->I made a list of orders for next year.

Plan for coming weeks

• The remaining orders(Next year).
• Memorandum(For next year's installation).

  • Layout plan of this physical year(2017)checked.—>

    • Short type(about 1 - 2 m) of DC cable(For 18V) needs 16 cables.

    • Need machine time —> WDS operating levels are decided by real experiments.

Other site works

• Planned black out: 12/25

Safety

• Incidents: Dropped the cap of the Type-A BF by 1cm.
• Foreseen risks
  • Type-A: Crane work, vacuum evacuation
  • Type-B: Crane work
  • Type-Bp:

Discussion

• Black out preparation

  • Type-B & Bp (on Monday morning)

    • Remove DC offset current (shoda)
    • Put the guardian into the safe state (shoda)
    • Turn off the coil drivers (aso)
    • Shutdown the digital systems (miyakawa)
  • Type-A (X-End)
    • Okutomi will shutdown the damping control
    • Mmiyakawa will shutdown the rack
• End of the year

  • Type-B & Bp: put the guardian into the safe state

  • Type-A: Continue the TF measurements

Travel Plans

• Travel (Week of 12/25):
  • Takahashi: 26 - 28
  • Okutomi: 26 - 28
  • Sato:
  • Ishizaki:
  • Mark:
  • Fabian:
  • Hirata: 26 - 27
  • Enzo:
  • Shoda: 26 - 28
  • Ohishi:
  • Fujii:
  • Tanaka:
  • Kozu (ICRR): 26 - 28
  • Arai (ICRR):
• Travel (Week of 1/9):
  • Takahashi: 9 - 12
  • Okutomi: 9 - 12
  • Sato: 9 - 12
  • Ishizaki: 9 - 12
  • Mark: 9 - 12
  • Fabian: 9 - 12
  • Hirata: 9 - 12
  • Enzo: 9 - 12
  • Shoda: 9 - 12
  • Ohishi:
  • Fujii: 9 - 12 ?
  • Tanaka:
  • Kozu (ICRR): 9 - 12 ?
  • Arai (ICRR):

Next meeting

On 2018/1/12(Fri)