Agenda/Minutes of the VIS Meeting on 2016/7/8

2016/7/8 13:30 - @ Room 210

Participants:

Progress report

Schedule Chart (PDF,MPP)

Type-A (Takahashi)

• Minutes of Type-A Meeting

• Vacuum compatibility of the release sensor was checked by Saito-san.

Type-B (Mark)

• Type B Past Week Summary
  • Mark did a Type B schedule presentation at the Extended Chiefs Meeting. It was decided to order a second assembly frame so that the BS/SR2/SR3/SRM installations can overlap more.

  • Mark and Hirata-san helped Mirapro construct the assembly frame (photos).

  • Mark and Hirata-san took the jacks and adapter plates off the frame, and cleaned them to remove as much of the original grease as possible. Takahashi-san re-greased them with vacuum grease.
  • Mark and Hirata-san wiped down the assembly frame and put the clean bag on it.
  • Saito-san, Ohishi-san and several people from Mirapro adjusted the position of the BS chamber.
  • Mark plugged the geophones back into the PR2 rack and checked that the repaired cable was working.
  • Fabian did more pre-assembly of the RM/IM/IRM.
  • Fabian designed modifications for the brackets on the security structure for immobilizing the IM, and Hirata-san did 2D drawings from them.
  • Takahashi-san ordered 10 mm diameter x 10 mm long magnets for the IM flags.
  • Mark inspected the SR2 section of the clean booth to see where SR2 assembly could be done. The slot in the ceiling for the crane runs in the ±X direction (at right angles to that for the BS), and there are suitable space on both the +X and the -X sides of the SR2 tank.
  • Hasegawa-san (of Hirose-san's lab) took delivery of the cup for removing the prisms on the dummy BS. It fits well.

  • Tatsumi-san ordered modifications to the BS gluing jig to make it easier to remove the pieces holding the flags after the flags are attached. The parts are expected Fri 7/8. He also ordered more EP30, but this won't arrive until the week of 7/18.

  • Hirata-san measured another filter and cleaned parts for Fabian
• Type B ongoing issues
  • OSEMs
    • Akutsu-san is working to get wide-mouth OSEMs

  • Longer cables for BF->PI and SF->PI.

    • Connectors RECEIVED, cables being made.
  • SR machining test ongoing.
  • Lower breadboard stuff
    • Installation to be incorporated into the procedure document. Mark/Takahashi to discuss.
    • Breadboard springs (in manufacture, expected end of July)
    • Nail-head parts - RECEIVED.
  • Documents

    • BS Assembly Procedure E1504235, E1504235 draft

• To-do list during Mark's vacation
  • Apply grease to jacks for assembly frame (Takahashi)
  • Finish assembly of BS IM, RM and IRM (Fabian).
  • Weigh IM/RM/IRM (Fabian, Hirata)
  • Pack/ship IM/RM/IRM to Kamioka (Hirata/Fabian).
  • Analyze geophone data (Mark, Shoda)
  • Remove glue from dummy BS face (Fabian)
  • Remove prism from dummy BS (Hirose, Fabian?)
  • Reglue flags and prisms (Tatsumi, Fabian)
  • Buy wire for BS and RM (Hirata)
  • Clean wire for BS and RM (Hirata)
  • Do fit/function test of winches (Fabian/Hirata)
  • Ship winches to Kamioka (Hirata/Fabian)
  • Work on BS simulation (Fabian)
  • Do Inventor assembly for SR2 in chamber and on assembly frame (Hirata)
  • Write more of payload assembly procedure (Fabian)
  • Write more of main assembly procedure (Mark)
• Longer term to-do list
  • Do BS Simulink model (Mark, Kokeyama)
  • Do 2D drawings of SR2 parts (Hirata)
  • Redesign SRx IM wire clamps for larger prisms, remachined RMs.
  • Order SRM/PRM parts (Hirata/Shoda)
  • Order SRx fasteners (Hirata)
  • Check SR RM machining test progress (Hirata)

Type-Bp (Shoda)

• Type-Bp modification 3D Drawings
  • Saito-san implemented the Virgo design into the Type-Bp design. (I asked him a little more updates.)
  • We have some questions about F7 LVDTs.
    • Coil specification
    • Its design (Slits on the coils. The place where the wires suppose to come out.)

  • [A/I] Structual analysis

• Installation related issue
  • Technical document is written by Shoda.
  • Does the Type-B team use the hanging frame for iKAGRA PR2?

  • [A/I] Shoda will decide the meeting date will Mirapro.

IMMT (Ohishi)

• Schedule
  • Finally succeeded in installing Windows and Microsoft Project.
  • Asking a company to make a quotation for writing 3D CAD drawing of IMMT suspensions from 2D parts plans.
• BS chamber was relocated (6th and 7th July).
  • Measurement with tape measure shows that now the chamber center is (x, y) = (0mm, +2mm) based on the floor points.

Watchdog system (Tanaka)

• Changes the scale of the vertical axis(for PhotoMos Relay).PDF

Safety

• Any issue ?

Discussion

• Inertial Sensors for Type-B (Mark, Fujii)
  • Geophone performance results (Fabian)
• What to do with the SR preparation
  • Call for shifts ?

Site work plan for the next week

• Mon: Takahshi (witness/supervise the installation of a cross-tube)
• Tue:
• Wed:
• Thu:
• Fri:

Travel Plans

• Travel (Week of 7/11):

  • Takahashi:11 (Cross tube installation)

  • Shoda:
  • Mark:
  • Fabian:
  • Okutomi:
  • Fujii:
  • Ishizaki:
  • Hirata:
  • Sato:
  • Ohishi:
• Travel (Week of 7/18):
  • Takahashi:
  • Shoda:
  • Mark:
  • Fabian:
  • Okutomi:
  • Fujii:
  • Ishizaki:
  • Hirata:
  • Sato:
  • Ohishi:

Mark is away: July 8-20

Next meeting

2016/7/15(Fri) 13:30 - (Aso will be absent)