In-vac PD/QPD layout meeting 2025/02/28
Time: Feb 28, 2025 14:00-14:40
Participants: Ray-Kuang Lee, Huali Chen, Yoichi Aso, Yuta Michimura
Zoom meeting
Minutes
- Huali showed almost the final layout idea for AS RF and OMC REFL, with squeezing injection optics.
- OSTM transmission seems different from CAD
- Probably because OSTM wedge is not included in Huali's calculations
- Add periscopes for AS RF in-vac path and OMC REFL path, and a beam diverter for AS RF in-vac path
- Adding periscopes can reduce the height from approx. 210 mm to 4 inch, and we can use smaller and lighter pedestals
- OSTM transmission seems different from CAD
- Next step is to collect comments for AS and to start REFL/POP planning
- New student might be available
- REFL/POP should be done by around summer
A/I
- Update the layout to include periscopes and a beam diverter, add a wedge to OSTM and upload the layout to JGWdoc [Huali]
- OSTM is 100 mm dia, 30 mm thick, with wedge of 2 deg
Thicker side is OMC side from the drawing, but actually installed flipped, so thinner side is OMC side (see Fig. 2 of klog #30159)
- Updated layout will be shared with relevant people for comments [Michimura]
- Collect information for REFL and start the REFL layout planning (... and POP next) [Michimura]
- Update the layout to include periscopes and a beam diverter, add a wedge to OSTM and upload the layout to JGWdoc [Huali]
- Next meeting: TBD on the week of March 24, with a new student