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Revision 2 as of 2017-03-09 17:00:40
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Revision 3 as of 2017-03-09 18:53:38
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 * Actuation check
  * The actuation of BF LVDT was checked, but they are not perfect. Though the resistances at the end of the connection are almost same, the calibration rate seems to be largely different. We will check it again inside the chamber, which should be OK since we have access from the second floor.
 * Suspension chain was installed!!
  * We installed the suspension chain inside the vacuum chamber.
  * We did not use the clean bag since it decrease the safety a lot. Instead, we cover the top of the suspension with the clean bags.
  * With the help of Shindo-san, we lifted the suspension horizontally using the turn buckles. The suspension is slowly lifted and lowered by the chain block.
  * FC is removed.
  * Oplev was set and the beam is coming out.
  * Cabling is almost done.
Line 21: Line 31:
 * Evaluation of the suspension performance.
 * Suspension will be took out from the chamber on 16th.

Agenda/Minutes of the VIS Meeting on 2017/3/10

2017/3/10 13:30 -

Participants:

Progress report

Schedule Chart : (PDF,MPP)

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

  • Actuation check
    • The actuation of BF LVDT was checked, but they are not perfect. Though the resistances at the end of the connection are almost same, the calibration rate seems to be largely different. We will check it again inside the chamber, which should be OK since we have access from the second floor.
  • Suspension chain was installed!!
    • We installed the suspension chain inside the vacuum chamber.
    • We did not use the clean bag since it decrease the safety a lot. Instead, we cover the top of the suspension with the clean bags.
    • With the help of Shindo-san, we lifted the suspension horizontally using the turn buckles. The suspension is slowly lifted and lowered by the chain block.
    • FC is removed.
    • Oplev was set and the beam is coming out.
    • Cabling is almost done.

Plan for coming weeks

  • Evaluation of the suspension performance.
  • Suspension will be took out from the chamber on 16th.

IMMT (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

Plan for coming weeks

Safety

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

Discussion

  • Number of LVDT cards

Travel Plans

  • Travel (Week of 3/13):
    • Takahashi: 13 -15
    • Shoda: 13 -16
    • Mark: 13 -17
    • Fabian: 13 -17
    • Okutomi: 13 - 16
    • Fujii:
    • Ishizaki:
    • Hirata: 13 -17
    • Sato: 13 -17
    • Enzo: 13 -17
    • Hashimoto (Hosei Univ.): 13 -16
    • Ohishi:
    • Tanaka:
    • Perry: 13 - 17
  • Travel (Week of 3/20):
    • Takahashi:
    • Shoda:
    • Mark:
    • Fabian:
    • Okutomi:
    • Fujii:
    • Ishizaki:
    • Hirata:
    • Sato:
    • Enzo:
    • Hashimoto (Hosei Univ.):
    • Ohishi:
    • Tanaka:
    • Perry:

Next meeting

On 2017/3/17(Fri)

KAGRA/Subgroups/VIS/VISMinutes20170310 (last edited 2017-03-10 23:38:31 by YoichiAso)