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 * Put a report here  * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/TypeA/Meeting|Minutes of Type-A Meeting]]
 * Preparation of installation: The hoist tool was assembled. The pallet and the hand lifter was prepared to open the top chamber.
  Protection net was assembled, but the diameter was too large a little. It will be made smaller.
 * EYV chamber: Top chamber was opened and the frame lock was installed.
 * BF damper: Pre-assembly of the BF damper was started.
 * Pre-isolator: The setup of assembling the pre-isolators was withdrawn from the large clean room.
 * Maraging wire: The wires were delivered on 31st January. They were sent to the thermal process on 1st February.
  The 3.3m wire will be treated at Himeji facility of Kinzoku-giken.
Line 17: Line 24:
 * Put a report here  * '''Hanging report''': IRM hanged
  * We hanged the IM and adjusted the weight.
   * The weight adjusting went very smoothly with new ballast masses :)
   * The iron small plates for the new IM OSEM flags detached easily.
  * IRM hanged and IM OSEMs are set.
   * The direction of the IM OSEM flag changes easily. It is difficult to find whether IM flag direction or OSEM direction is wrong during the OSEM adjustment.
    Also, wide cavity OSEMs never touch to flags so far. However, alignment accuracy was reduced a lot.
  * Measured IM OSEM spectrum and IM TFs.
   * We found that OSEM noise are large and have some structure in spectra, which are coherent between 6 OSEMs.
   * YAW TF could not be measured well.
   -> Need more investigation.

 * BFRM test assembly was done except for the BFRM hanging and LVDT coil assembly. No problem so far. May need 2nd test when the suspension rods are delivered.

 * '''Next week task''': Set the BF and the BFRM about to be hanged.
  * Implement active damping for IM and BF GAS.
  * Assemble the BF and the BFRM.
  * Set the Traverser and the SF.
Line 23: Line 47:
 * Put a report here  * Progress (this week)
     *I asked the Univ.Tokyo CO-OP to estimate electronic parts (waiting for answer).
     *I'm requesting the manufacture of PCB and metal mask on P-ban(PCB Manufacturer) (scheduled to be delivered next week).
 *Business trip plan (Kamioka)
  *Feb.8 from the afternoon to Feb.9(...Adjusting)

Agenda/Minutes of the VIS Meeting on 2017/2/3

2017/2/3 13:30 -

Participants:

Progress report

Schedule Chart : (PDF,MPP)

Type-A (Takahashi)

  • Minutes of Type-A Meeting

  • Preparation of installation: The hoist tool was assembled. The pallet and the hand lifter was prepared to open the top chamber.
    • Protection net was assembled, but the diameter was too large a little. It will be made smaller.
  • EYV chamber: Top chamber was opened and the frame lock was installed.
  • BF damper: Pre-assembly of the BF damper was started.
  • Pre-isolator: The setup of assembling the pre-isolators was withdrawn from the large clean room.
  • Maraging wire: The wires were delivered on 31st January. They were sent to the thermal process on 1st February.
    • The 3.3m wire will be treated at Himeji facility of Kinzoku-giken.

Type B (Mark)

  • Put a report here

Type-Bp (Shoda)

  • Hanging report: IRM hanged

    • We hanged the IM and adjusted the weight.

      • The weight adjusting went very smoothly with new ballast masses :)

      • The iron small plates for the new IM OSEM flags detached easily.
    • IRM hanged and IM OSEMs are set.
      • The direction of the IM OSEM flag changes easily. It is difficult to find whether IM flag direction or OSEM direction is wrong during the OSEM adjustment.
        • Also, wide cavity OSEMs never touch to flags so far. However, alignment accuracy was reduced a lot.
    • Measured IM OSEM spectrum and IM TFs.
      • We found that OSEM noise are large and have some structure in spectra, which are coherent between 6 OSEMs.
      • YAW TF could not be measured well.

        -> Need more investigation.

  • BFRM test assembly was done except for the BFRM hanging and LVDT coil assembly. No problem so far. May need 2nd test when the suspension rods are delivered.

  • Next week task: Set the BF and the BFRM about to be hanged.

    • Implement active damping for IM and BF GAS.
    • Assemble the BF and the BFRM.
    • Set the Traverser and the SF.

IMMT (Ohishi)

  • Put a report here

Watchdog system (Tanaka)

  • Progress (this week)
    • I asked the Univ.Tokyo CO-OP to estimate electronic parts (waiting for answer).
    • I'm requesting the manufacture of PCB and metal mask on P-ban(PCB Manufacturer) (scheduled to be delivered next week).
  • Business trip plan (Kamioka)
    • Feb.8 from the afternoon to Feb.9(...Adjusting)

Safety

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

Discussion

Site work plan for the next week

  • Mon:
  • Tue:
  • Wed:
  • Thu:
  • Fri:

Travel Plans

  • Travel (Week of 2/6):
    • Takahashi: 6-10
    • Shoda: 6-10
    • Mark: 6-10
    • Fabian: 6-10
    • Okutomi: 6-10
    • Fujii:
    • Ishizaki: 6-10
    • Hirata: 6-10
    • Sato: 6-10
    • Enzo: 6-10
    • Hashimoto (Hosei Univ.): 6-10
    • Someya (Hosei Univ.): 6-10
    • Ohishi:
  • Travel (Week of 2/13):
    • Takahashi:
    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Sato:
    • Enzo:
    • Hashimoto (Hosei Univ.):
    • Someya (Hosei Univ.):
    • Ohishi:

Next meeting

On 2017/2/10(Fri)

VIS F2F: Feb. 17th

March VIS F2F: March 3

KAGRA/Subgroups/VIS/VISMinutes20170203 (last edited 2017-02-03 20:47:00 by RyutaroTakahashi)