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Participants: Participants: Haoyu, Tomaru, Shalika, Somiya, Marc, Sungho, KYamamoto, Aso, Matteo
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2023 November ??, 15:00 - 16:00 2023 November 22, 16:00 - 17:00
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 1.  1. update on LC birefringence setup from Marc
 1. no update on coating loss angle paper from KYamamoto
 1. update on substrate Q measurement on site
  * automated measurement of 24kHz drum mode
  * 250k -> 10^(4)
  * 80K -> 10^(5) for ETMs and 10^(6) for ITMs
  * 34kHz mode Q value is higher than the Q of 24kHz one
 1. update on paper writing from Haoyu
  * first draft circulation in 2 weeks approximately
 1. update on ITMs polishing by Aso
  * preliminary maps requested by Thales
  * final polishing spec document circulated
  * issue/discussion on flatness spec
  * meeting with Nikon planned to discuss about mid-spatial frequencies requirement
  * starting of final polishing possible within current FY (possibly Feb 2024)
 

MIR Meeting on 2023/10/25 15:00 - 16:00

Participants: Haoyu, Tomaru, Shalika, Somiya, Marc, Sungho, KYamamoto, Aso, Matteo

Next meeting

2023 November 22, 16:00 - 17:00

Minutes

  1. update on LC birefringence setup from Marc
  2. no update on coating loss angle paper from KYamamoto
  3. update on substrate Q measurement on site
    • automated measurement of 24kHz drum mode
    • 250k -> 10^(4)

    • 80K -> 10(5) for ETMs and 10(6) for ITMs

    • 34kHz mode Q value is higher than the Q of 24kHz one
  4. update on paper writing from Haoyu
    • first draft circulation in 2 weeks approximately
  5. update on ITMs polishing by Aso
    • preliminary maps requested by Thales
    • final polishing spec document circulated
    • issue/discussion on flatness spec
    • meeting with Nikon planned to discuss about mid-spatial frequencies requirement
    • starting of final polishing possible within current FY (possibly Feb 2024)

Agenda

  • various updates

KAGRA/Subgroups/MIR/Meetings/Minutes20231025 (last edited 2023-10-25 16:08:44 by matteo.leonardi)