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 * SF was set on the Traverser, and the chain below BF was suspended from SF (in the week of 5/8)
 * BF weight and tilt was adjusted
  * We tuned the weight according to the height of the keystone.
  * Balanced the BF roughly according to the tilt of IRM. After that, we tuned more using the picomotors according to the IM OSEM signals.
 * We found the BF FR was not moving well.
  * We opened the BF cap a little bit by hanging from the SF, and checked that the BF FR still has the actuation range.
  * The problem was wiring. We found that the resistance between 2-7 pin was much high (usually ~9 Ω just before the driver, but resistance between 2-7 was ~60 kΩ).
    We fixed the cabling, and it started working again!!
  * The cap was closed after checking, and cabling was fixed.
Line 25: Line 35:
 * Tilt alignment of BF & IM
 * Installation into the tank.

Agenda/Minutes of the VIS Meeting on 2017/5/19

2017/5/19 13:30 -

Participants:

Progress report

Schedule Chart : (PDF,MPP)

  • Type-A:
  • Type-B:
  • Type-Bp:

Type-A (Takahashi)

Past week report

Plan for coming weeks

Type B (Mark)

Past week report

Plan for coming weeks

Type-Bp (Shoda)

Past week report

  • SF was set on the Traverser, and the chain below BF was suspended from SF (in the week of 5/8)
  • BF weight and tilt was adjusted
    • We tuned the weight according to the height of the keystone.
    • Balanced the BF roughly according to the tilt of IRM. After that, we tuned more using the picomotors according to the IM OSEM signals.
  • We found the BF FR was not moving well.
    • We opened the BF cap a little bit by hanging from the SF, and checked that the BF FR still has the actuation range.
    • The problem was wiring. We found that the resistance between 2-7 pin was much high (usually ~9 Ω just before the driver, but resistance between 2-7 was ~60 kΩ).
      • We fixed the cabling, and it started working again!!
    • The cap was closed after checking, and cabling was fixed.

Plan for coming weeks

  • Tilt alignment of BF & IM

  • Installation into the tank.

IMMT (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

  • Start mounting on the 19 inch rack(Main 4ch WDS box).--> Complete(the wiring is still).

  • Start formulating an experimental plan(First test) at the KAGRA site.-->

Plan for coming weeks

  • Start creation of extended I/O PCB(plot type (With the Main 4ch WDS box and I/O box,I/O board For relay).-->Ongoing.

Safety

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

Discussion

  • JPS presentation

Travel Plans

  • Travel (Week of 5/22):
    • Takahashi: 24 - 25
    • Shoda: 22 - 25
    • Mark: 22 - 25
    • Fabian: 22 - 25
    • Okutomi: 22 - 25
    • Fujii:
    • Ishizaki: 22 - 25
    • Hirata: 22 - 25
    • Sato: 22 - 25
    • Enzo: 22 - 25
    • Ohishi:
    • Tanaka:
    • Sekiguchi(Hosei): 23 - 25
    • Hirayama(Hosei): 23 - 25
  • Travel (Week of 5/29):
    • Takahashi:
    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Sato:
    • Enzo:
    • Ohishi:
    • Tanaka:
    • Sekiguchi(Hosei):
    • Hirayama(Hosei):

Next meeting

On 2017/5/26(Fri) F2F in Mitaka

KAGRA/Subgroups/VIS/VISMinutes20170519 (last edited 2017-05-19 16:07:00 by YoichiAso)