KAGRA/IFOIntegration2024/Recovery20240322

IMC recovery(20240322)

Suspensions(R.Takahashi)
- Mechanical Motion
  - Smooth pico motion and its default position
    - MCi/o: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28907 -> A.I. upload picth pico pictues (R.Takahashi), or taking picture for picth pico.
    - MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28909 -> A.I. upload picth, yaw pico pictues (R.Takahashi), or taking picture for picth, yaw pico.
  - Gaps between magnets and coils -> MCo uppper is the minimum, but this is the best effort.
  - Gaps between EQ stoppers and mirrors -> confirmed less than 1mm.
    - MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28915
    - MCi/o: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28913
- Electrical wirings
  - Coil resistances and inductances -> inductances shoulg refer the past data if coil did not change, or it will be measured again (Wasimi, 3/24(Monday morning)
    - MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28668 -> MCo H4 looks high, it could be disconnection. It should be measured again (Wasimi, 3/24(Monday morning).
    - MCi/e: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28696 -> One of the MCi resistance is low, but low may has no problem. If it is high, it may have some disconnection.
  - Isolation of Wiring from coils to flanges(pico and mag-coil) -> MCi could not be accessed.
    - MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28911 -> improved
    - MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28910 -> improved
    - POM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28914 -> this does not matter for the suspension.
  - Fixing on tables is tight and reliable?
- Smooth Mag-coil motion and balance and TFs
  - balance can be adjusted after closing?
  - MCi: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28938
  - MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28939
  - MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28940 -> Peak of pitch shifted to higher frequency from result of Feb.2. Needs remote centering for the Oplev first (Ushiba).
Mirror conditions(Y.Aso)
- Clean around the center?
  - MCe has a spot near the center. But its influence is expected to be small.
  - Inspection: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28856
Alignment(T.Akutsu, T.Ushiba, T.Yokozawa)
- TEM00 flashing
  - https://klog.icrr.u-tokyo.ac.jp/osl/?r=28912
- The IMC trans beam is the same as before?
- Beam positions on each mirror
  - They should be the same because the IMC trans was recovered in MCio?
  - How about on MCe? MCE tra QPD can be the reference.
- QPD path and centering
- Gaps between magnets and coils again
- IP1/2 dynamic range check for the IMC injection?
- Beam paths for IMC REFL.
Beam dump(T.Akutsu)
- Beam shield reinstallation
  - https://klog.icrr.u-tokyo.ac.jp/osl/?r=28927
  - https://klog.icrr.u-tokyo.ac.jp/osl/?r=28926
- Beam dumps were additionally added?
  - In basic, No. Relocation was done. https://klog.icrr.u-tokyo.ac.jp/osl/?r=28931 -> Inside of beam duct between PSL and iMC looks shining.
Vacuum, etc (N.Kimura, T.Uchiyama, S.Miyoki)
- Cleaning
  - No dust inside, especially on the bottom?
- Leak point was fastened tightly?
  - It will be done when the bellows are attached by Mirapro.
- MCE trans flange rotation (the past activity is in https://klog.icrr.u-tokyo.ac.jp/osl/?r=28326)
- Lift-up tool check for bellows installation. (past accident https://klog.icrr.u-tokyo.ac.jp/osl/?r=28344)
- Flange surface check to avoid leaking especially on GV_mcf
- FFU stop for the MCE/MCREFL optical table and reconstruction of the window shield (MCE, MCF?).

one of templates for IMC closing by Akutsu-kun in 2021.

??? Recovery(202404??)