ISC Meeting on 2020/06/28 14:00 - 15:00

Participants:

TBD

Minutes

IMC ASC [Kenta, C. Hirose, 20 min]
Phase camera project [Kokeyama, 10 min]
ALS report [Izumi, 10 min]
- ALS users manual https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=13031
- Remaining tasks for ALS https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=13042
IMMT1T ISS POM spec (see below) [Michimura, 10 min]
O4 commissioning task list [Izumi, Michimura]
- Any missing items?
Other reports
- Non-polarizing beam splitters for in-air optical tables ordered https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=12956 [Michimura]
- In-vac steering mirrors: https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=12592 [Michimura]
  - IMMT1T ISS POM: Spec to be finalized
    - R:T=90:10 for 1064 nm, transmissive for oplev beam (663-675nm) https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=12949
      - 0.2963% @ 1064 nm measured by the vendor. 0.22% measured by Akutsu-san at the site.
      - Need to check again if ISS people is happy about R=90%
    - Wedge finalized to be 1 deg (wedge side is HR)
  - All reflective steering mirrors: Spec to be finalized
    - Order AoI=0-30 deg ones and AoI=30-50 ones
    - Wedge finalized to be 0.5 deg
- Optical table cover [Michimura]
  - IMC TRANS assembled, IMC REFL delivered
  - Parts for fixing FFU on REFL, POP, AS ordered
  - TRX and TRY ordered
  - Additional small FFU for POS ordered