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Participants: Participants: Koji Nagano, Shinji Miyoki, Tomotada Akutsu, Osamu Miyakawa, Takashi Uchiyama, Nobuhiro Kimura, Kenta Tanaka, Yuta Michimura
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 * What is the purpose?
  * Light shielding to block ambient light to PDs and QPDs (also to block ambient light going into the chambers)
  * Dust cover to keep optical table clean
  * To block laser beams going outside for safety reasons
  * To protect periscopes and other optics (and viewports) from being touched unintentionally
  * See https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10129
 * Anything burnable? Especially for IMC, 100 W-class beam can come out from the chamber
  * '''A/I''': Check the material of rubbers, material of the aluminum panel surface [Michimura]
 * Anything that create heat inside the covers?
  * Beam dumps. IMC REFL has water-cooled beam dump to attenuate the beam. REFL not yet.
  * Heat generated by other circuits should be negligible.
 * Which sides have doors?
  * Three sides, except for the side close to vacuum chamber.
 * When should be assemble them?
  * IMC REFL/IMC TRANS: After mid-June, when IMC commissioning finishes
  * TRX/TRY: After July, since we might shoot green beam in June
  * AS: We will not use AS for a while
  * '''Decision''': Order first and discuss the assembly schedule when the parts are ready
 * How to proceed with the ordering?
  * '''A/I''': Check with Kikuchi-san [Michiumura]

Optical Table Cover for TMS and IMC Review on 2021/04/12 13:00 - 14:00

Participants: Koji Nagano, Shinji Miyoki, Tomotada Akutsu, Osamu Miyakawa, Takashi Uchiyama, Nobuhiro Kimura, Kenta Tanaka, Yuta Michimura

Zoom meeting: https://zoom.us/j/5045179604

Materials

Minutes

  • What is the purpose?
  • Anything burnable? Especially for IMC, 100 W-class beam can come out from the chamber

    • A/I: Check the material of rubbers, material of the aluminum panel surface [Michimura]

  • Anything that create heat inside the covers?
    • Beam dumps. IMC REFL has water-cooled beam dump to attenuate the beam. REFL not yet.
    • Heat generated by other circuits should be negligible.
  • Which sides have doors?
    • Three sides, except for the side close to vacuum chamber.
  • When should be assemble them?
    • IMC REFL/IMC TRANS: After mid-June, when IMC commissioning finishes
    • TRX/TRY: After July, since we might shoot green beam in June
    • AS: We will not use AS for a while

    • Decision: Order first and discuss the assembly schedule when the parts are ready

  • How to proceed with the ordering?

    • A/I: Check with Kikuchi-san [Michiumura]

KAGRA/subgroup/ifo/MIF/Minutes20210412 (last edited 2021-04-12 14:28:52 by YutaMichimura)