Agenda/Minutes of the VIS Meeting on 2018/4/20

2018/4/20 13:30 -

Participants:

Progress report

Schedule Chart

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-A (Takahashi)

Past week report

[X-front]

• Bent and formed six blades to mount on the TF base.
• Mounted the blades on the TF base.
• Put the damper ring with magnets on the F1.
• Mounted the PI on the bridge frame with the maraging wire.
• Suspended the filter chain from the TF. Needed load was about 700kg for the TF in spite of target load of 580kg.
• Removed one blade and rearranged two blade. The TF could work without additional load.
• Suspended the damper ring from the TF base. One hook screw galled.
• Cabled between the F1 and the upper small hexagon.
• Inserted the wire clamp.
• Dismounted the PI and bridge frame.
• Checked the cable connections.
• Lifted down the F1 into the corrugate tube. The top ring sit on the frame lock.
• Installed the PI into the top chamber.

Plan for coming weeks

[X-front]

• Cable to the feedthroughs.
• Set the ACCs.
• Calibrate the LVDTs for the BF damper and the IP.

Type B (Mark)

Report for week of 4/9

• We packed away the SRM SF and BF.
• After several failed attempts with one secondary prism, Mark finished the SR3 prism/magnet gluing.
• Tanioka-kun built two IRMs (less OSEMs).
• Enzo built an RM.
• Kozu-kun and Enzo calibrated one set of 6 IM OSEMs for SR3. (6 OSEMs for SRM remain to be done.)
• Hirata-san aligned the assembly frame, installed the interface bars and IM ring, and installed the IM.
• Eleonora and Izumi-san revisited the BS length to tilt coupling, which had degraded, and got it working again.

Plan for week of 4/23

• Shoda-san at Mitaka.
• Hirata-san at Kamioka Mon-Wed, then Mitaka.
• Kozu-kun at Kamioka Wed-Fri (but may be working with PEM on Fri).
• Others (Mark, Enzo, Tanioka-kun) at Kamioka full week
• --
• Continue SR3 Hang
  • Hang optic.
  • Hang RM.
  • Cable RM OSEMs.

Plan for week of 4/30

• Shoda-san at Mitaka.
• Mark, Enzo at Kamioka Mon-Wed or TBD.
• Others having fun doing Golden Week stuff.
• --
• Observe KAGRA Phase 1 operations, assist if problems arise.
• Do BF TFs.
• Continue SR3 hang.

To-Do Lists, Schedule

• KAGRA/Subgroups/VIS/TypeB/March2018

• KAGRA/Subgroups/VIS/TypeB/April2018

• KAGRA/Subgroups/VIS/TypeB/ToDoBS

• KAGRA/Subgroups/VIS/TypeB/ToDoSR

• JGW-L1807779-v1 Type B Schedule (SR)

Vacation Info

• Fabian vacation, 3/26-4/27 (then gone).

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

Plan for coming weeks

Other site works

Safety

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

Discussion

• Composite SRM design (Shoda)
• ETMY tower repair (Takahashi, Okutomi)

• Phase 1 Operation Reschedule

• LVDT drivers

  • Staocktake

  • Buy 10 sets
  • Check the broken boards in Mitaka

Travel Plans

• Travel (Week of 4/23):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Ishizaki:
  • Mark:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanioka:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):
• Travel (Week of 4/30):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Ishizaki:
  • Mark:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanioka:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):

Next meeting

On 2018/4/27(Fri)