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13:30- 13:40-14:10
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Participants: Participants: Takahashi, Ohashi, Shoda, Hagiwara, Hirata, Ikeda, Miyo, Sato, Oshio, Ushiba, Kimura, Akutsu, Aso, Miyoki
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  * 11/2-3: Opening the chambers (top and cross tube), Fixing the IP and filters, Disconnection of the cables. 11/4: Disconnection of the cryo-payload.   * 11/2: Opening the chambers (top and cross tube), Fixing the IP and filters, Disconnection of the cables. 11/3: Disconnection of the cryo-payload.
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 * design of new small hexagon(Cable bandling bellow BF)[[attachment:Assy small hexagon for BF-CRYO.pdf]]   * Welding is not allowed in the tunnel. There are some ideas; gluing, flanges with extension, clamp to the view port.
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14:00- 14:10-15:00
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Participants: Participants: Takahashi, Shoda, Ishizaki, Fabian, Hitrata, Iguchi, Miyo, Tanaka, Sato, Sugiyama, Terrence, Aso
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 * Clean-up of the IX and IY area.  * Clean-up of the IXV and IYV area.
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 * Hirata-san asked for a quotation for 3 Top Filter keystone plates (for BS, SR3 and SR3 in case it's needed).
 * Fabian made progress in writing a document about LVDT card recovery. One more working day is needed.
 * We lost Hirose-san's lamps for checking cleanliness of mirrors. We'll keep looking for them.
 * We lost the medium capacity scale we used for ballast mass measurement. We need to buy one. I borrowed Miyoki-san's for a few days but he wants it back.
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 * Confirmation of exchange cables function in the new combiner.
 * Only two channels are available in the 1U chassis.
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[Terrence]
Very short introduction to VISHack
[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=12125 | Slides]]

Agenda/Minutes on 2020/10/9

Zoom Meeting

CRY+VIS Interface Meeting

13:40-14:10

Participants: Takahashi, Ohashi, Shoda, Hagiwara, Hirata, Ikeda, Miyo, Sato, Oshio, Ushiba, Kimura, Akutsu, Aso, Miyoki

  • Post O3 Upgrade portal

  • Schedule on ETMY.
    • 11/2: Opening the chambers (top and cross tube), Fixing the IP and filters, Disconnection of the cables. 11/3: Disconnection of the cryo-payload.
  • MN oplev table design
    • Welding is not allowed in the tunnel. There are some ideas; gluing, flanges with extension, clamp to the view port.

VIS Meeting

14:10-15:00

Participants: Takahashi, Shoda, Ishizaki, Fabian, Hitrata, Iguchi, Miyo, Tanaka, Sato, Sugiyama, Terrence, Aso

Progress report

General

Type-A

  • Clean-up of the IXV and IYV area.

Type-B

  • Clean-up of the BS and SR area.
  • Hirata-san asked for a quotation for 3 Top Filter keystone plates (for BS, SR3 and SR3 in case it's needed).
  • Fabian made progress in writing a document about LVDT card recovery. One more working day is needed.
  • We lost Hirose-san's lamps for checking cleanliness of mirrors. We'll keep looking for them.
  • We lost the medium capacity scale we used for ballast mass measurement. We need to buy one. I borrowed Miyoki-san's for a few days but he wants it back.

Type-Bp

Type-C

Controls

Electronics

  • Confirmation of exchange cables function in the new combiner.
  • Only two channels are available in the 1U chassis.

Towards O4

Safety

Discussion

[Terrence] Very short introduction to VISHack Slides

Travel Plans

The week from 10/12

  • Takahashi: 10/12-16
  • Sato: 10/12-16
  • Hirata: 10/12-16

The week from 10/19

  • Takahashi: 10/19-10/23

Next meeting

  • On 2020/10/16(Fri)

KAGRA/Subgroups/VIS/VISMinutes20201009 (last edited 2020-10-09 15:41:33 by RyutaroTakahashi)