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Participants: Participants: Mark, Shoda, Ishizaki, Sato, Okutomi, Aso, Takahashi, Ohishi, Hirata, Fabian, Enzo, Fujii, Tanaka
Line 7: Line 8:
Schedule Chart : ([[https://www.dropbox.com/s/rlnmlt3uipcsai8/VIS%20Overall%20Schedule-20170121.pdf?dl=0|PDF]],[[https://www.dropbox.com/s/rlnmlt3uipcsai8/VIS%20Overall%20Schedule-20170121.pdf?dl=0|MPP]]) Schedule Chart : ([[https://www.dropbox.com/s/3xa42dccpteurm0/VIS%20Overall%20Schedule-20170209.pdf?dl=0|PDF]],[[https://www.dropbox.com/s/sw2y0d9v65u4o4z/VIS%20Overall%20Schedule-20170209.mpp?dl=0|MPP]])

 * Type-A: Mostly on schedule
 * Type-B: 1 week delay
 * Type-Bp: On schedule now, but expect to have one week delay in the next week.
Line 11: Line 16:
 * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/TypeA/Meeting|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.
Line 12: Line 23:
 * 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.
Line 15: Line 31:
 * Hirata-san:
  * Did drawings of SR damper.
 * Mark, Fabian, Enzo and Hirata-san (at Kamioka):
  * Took the end plate off the IM to get access to the pitch/roll picos.
  * Found the pitch pico was unreliable and replaced it.
  * Found the springs were not stiff enough, and immobilized 7 turns at the end of each with Cu wire to make them stiffer.
  * Reassembled and rebalanced the IM.
  * Reassembled and adjusted the IRM.
  * Discovered that the transverse offset between IRM and IM could be corrected by adjusting the roll of the BF.
  * Adjusted IM OSEMs to half-way.
  * Made and installed a new pair of wires for the BF yaw pico on the IM pico adapter (Hirata-san).
  * Installed an improved LVDT cable made by Hirata-san.
  * Made and hung posters for the Elites meeting visitors.==== Plan for coming weeks ====
Line 16: Line 45:
  * Enzo to stay in Mitaka and concentrate on getting drivers' license
  * Mark and Fabian to come to Kamioka and finish adjusting OSEMs and take TFs.
  * Assorted procedure writing and design tasks (SR frame etc)

==== Discussion ====
  * Omit detailed TF measurements to expedite the work
Line 19: Line 54:
 * 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?
Line 20: Line 74:
 * Optical bench suspension test.
  * Assemble magnets on the OB Damper
  * Suspend the OB damper, OB intermediate mass, and OB for the test.

==== Discussion ====
 * The support jig for the optical bench installation
  * The structure seems OK for supporting the damper ring. Try carefully in the next week's test assembly. Ask Shindo-san to help the work.
  * For extra safety, improved support jig will be ordered to Mirapro (Shoda)
 * Oxidized(?) aluminum parts
  * Type-Bp team will inspect the stored ones to see if we need to re-make them or not.
 *
Line 23: Line 88:
Looking for jig parts http://klog.icrr.u-tokyo.ac.jp/osl/?r=2439
Line 33: Line 99:
  * Type-A:
  * Type-B:
  * Type-Bp:		   * Type-A: Crane works. Be careful not to drop things.
  * Type-B: no dangerous work foreseen
  * Type-Bp: Optical bench installation work needs to be done carefully.
Line 38: Line 104:
 * Disassembly procedure proposal (Shoda) [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=6132|document]]
  * It is better to avoid the flipping of the RM+TM.
  * A better procedure was found during the discussion at the meeting.
  * Hirata-san will design necessary jigs for this procedure in the next week.
Line 39: Line 109:

== 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
Line 56: Line 119:
  * Ishizaki: 13-16   * Ishizaki:
Line 65: Line 128:
 * Travel (Week of 2/13):
  * Takahashi:
  * Shoda:
  * Mark:
  * Fabian:
  * Okutomi: 		 * Travel (Week of 2/20):
  * Takahashi: 20- 24
  * Shoda: 21 - 24
  * Mark: 20 - 24
  * Fabian: 20 - 24
  * Okutomi: 20 - 22
Line 72: Line 135:
  * Ishizaki:
  * Hirata:
  * Sato:
  * Enzo:
  * Hashimoto (Hosei Univ.):
* Someya (Hosei Univ.): 		  * Ishizaki:  20 - 24
  * Hirata:  20 - 24
  * Sato: 20 - 24
  * Enzo:  20 - 24
  * Hashimoto (Hosei Univ.): 20 - 24

Agenda/Minutes of the VIS Meeting on 2017/2/10

2017/2/10 13:30 -

Participants: Mark, Shoda, Ishizaki, Sato, Okutomi, Aso, Takahashi, Ohishi, Hirata, Fabian, Enzo, Fujii, Tanaka

Progress report

Schedule Chart : (PDF,MPP)

  • Type-A: Mostly on schedule
  • Type-B: 1 week delay
  • Type-Bp: On schedule now, but expect to have one week delay in the next week.

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

  • Hirata-san:
    • Did drawings of SR damper.
  • Mark, Fabian, Enzo and Hirata-san (at Kamioka):
    • Took the end plate off the IM to get access to the pitch/roll picos.
    • Found the pitch pico was unreliable and replaced it.
    • Found the springs were not stiff enough, and immobilized 7 turns at the end of each with Cu wire to make them stiffer.
    • Reassembled and rebalanced the IM.
    • Reassembled and adjusted the IRM.
    • Discovered that the transverse offset between IRM and IM could be corrected by adjusting the roll of the BF.
    • Adjusted IM OSEMs to half-way.
    • Made and installed a new pair of wires for the BF yaw pico on the IM pico adapter (Hirata-san).
    • Installed an improved LVDT cable made by Hirata-san.
    • Made and hung posters for the Elites meeting visitors.==== Plan for coming weeks ====

Plan for coming weeks

  • Enzo to stay in Mitaka and concentrate on getting drivers' license
  • Mark and Fabian to come to Kamioka and finish adjusting OSEMs and take TFs.
  • Assorted procedure writing and design tasks (SR frame etc)

Discussion

  • Omit detailed TF measurements to expedite the work

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.

Discussion

  • The support jig for the optical bench installation
    • The structure seems OK for supporting the damper ring. Try carefully in the next week's test assembly. Ask Shindo-san to help the work.
    • For extra safety, improved support jig will be ordered to Mirapro (Shoda)
  • Oxidized(?) aluminum parts
    • Type-Bp team will inspect the stored ones to see if we need to re-make them or not.

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: Crane works. Be careful not to drop things.
    • Type-B: no dangerous work foreseen
    • Type-Bp: Optical bench installation work needs to be done carefully.

Discussion

  • Disassembly procedure proposal (Shoda) document

    • It is better to avoid the flipping of the RM+TM.
    • A better procedure was found during the discussion at the meeting.
    • Hirata-san will design necessary jigs for this procedure in the next week.

Travel Plans

  • Travel (Week of 2/13):
    • Takahashi: 13-16
    • Shoda: 13-16
    • Mark: 13-16
    • Fabian: 13-16
    • Okutomi: 13-16
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Sato: 13-16
    • Enzo:
    • Hashimoto (Hosei Univ.): 13-16
    • Someya (Hosei Univ.): 13-16
    • Ohishi:
  • Travel (Week of 2/20):
    • Takahashi: 20- 24
    • Shoda: 21 - 24
    • Mark: 20 - 24
    • Fabian: 20 - 24
    • Okutomi: 20 - 22
    • Fujii:
    • Ishizaki: 20 - 24
    • Hirata: 20 - 24
    • Sato: 20 - 24
    • Enzo: 20 - 24
    • Hashimoto (Hosei Univ.): 20 - 24
    • Ohishi:
    • Tanaka:

Next meeting

On 2017/2/17(Fri) in Mitaka

March VIS F2F: March 3

KAGRA/Subgroups/VIS/VISMinutes20170210 (last edited 2017-02-16 16:38:35 by NobuyukiTanaka)