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• Minutes20250422

In-vac PD/QPD layout meeting 2025/04/22

Time: Apr 22, 2025 14:00-14:30

Participants: Huali Chen, Ryan Yang, Yoichi Aso, Yuta Michimura

Zoom meeting

Minutes

• AS (Huali)

  • Updated layout in JGW-G2516616

  • We will need to add a fast beam shutter between OFI and OSTM at some point
• REFL (Ryan)
  • In-vac layout complete. Fits in 800 mm dia.
  • Set tilt of all RF PDs and RF QPDs to 15 deg, following LIGO layout.
• To make CAD drawings based on these layout...
  • We will need to design a beam diverter and RF QPDs based on LIGO design
  • We will need to design pedestals, periscopes, optical bench etc.

    • For 210 mm heigh optics, follow JGW-D1503916.

    • For 4 inch heigh optics, Thorlabs BA1/M for the base and 20mm dia. posts.

  • Some links for OMC CAD drawings:

    • https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16678

    • https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15865

    • https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16655

• A/I

  • Avoid 0.5 inch optics and make them 1 inch, and upload current layout to JGWdoc [Ryan]

    • DONE JGW-G2516644

  • Design in-air REFL layout by following current design [Ryan]
• Next meeting: TBD on the week of June 26 ?