IMC Recovery(20240322)

• Suspensions(R.Takahashi)
  • Electrical wirings
    • Coil resistances and inductances

      • MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28668

      • MCi/e: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28696

    • Isolation of Wiring from coils to flanges(pico and mag-coil)

      • MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28911

      • MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28910

      • POM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28914

    • Fixing on tables is tight and reliable?
  • Mechanical Motion
    • Smooth pico motion and its default position

      • MCi/o: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28907

      • MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28909

    • Smooth Mag-coil motion and balance and TFs
      • balance can be adjusted after closing?

      • Health MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28890

      • Health MCi: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28889

      • Health MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28915

    • Gaps between magnets and coils
    • Gaps between EQ stoppers and mirrors

      • MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28915

      • MCi/o: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28913

• 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?

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28779

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28839

  • 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

• 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??)

??? Recovery(202404??)