• KAGRA
• Recovery2024
• MICH

PR2,3,BS,SRM,SR2,SR3 Cleaning

PR2

• https://klog.icrr.u-tokyo.ac.jp/osl/?r=29228

PR3

• https://klog.icrr.u-tokyo.ac.jp/osl/?r=29520

No cleaning for BS, SRM, SR2, SR3

• Did you eyeballs check during the beam path check?

Suspension Condition of PR2, PR3, BS, SR3, SR2, SRM. (Takahashi-san, Ushiba-kun, Hirata-san)

• Mechanical Motion
  • Smooth pico motion and its default position: skip
  • Gaps between magnets and coils :skip
  • Gaps between EQ stoppers and mirrors
    • PR2

      • (Recovery Work)https://klog.icrr.u-tokyo.ac.jp/osl/?r=28593

      • Position measurement of the traverser.
    • PR3

      • (Recovery Work)https://klog.icrr.u-tokyo.ac.jp/osl/?r=28509

      • Position measurement of the traverser.

    • BS : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29682

    • SRM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29594

    • SR2: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29595

    • SR3: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29596

    • SRMs total comments: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29612

• IP adjustment

  • BS: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28359

• Electrical wirings

  • Coil resistances and inductances ->

    • PR2: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29429

    • PR3: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29430

    • BS : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29088, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29014

    • SRM:
    • SR2:
    • SR3:
• OSEM conditions

  • RP2: (Recovery Work)https://klog.icrr.u-tokyo.ac.jp/osl/?r=28593

  • RP3: (Recovery Work)https://klog.icrr.u-tokyo.ac.jp/osl/?r=28509

  • BS : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29156, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29379

  • SRM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29317, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29323, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29594

  • SR2: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29315, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29322, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29595

  • SR3: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29316, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29321, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29596

• Smooth Mag-coil motion and balance and TFs
• Spectrum

  • PR2: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28674, https://klog.icrr.u-tokyo.ac.jp/osl/?r=28768, https://klog.icrr.u-tokyo.ac.jp/osl/?r=28770, https://klog.icrr.u-tokyo.ac.jp/osl/?r=28774,

  • PR3: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28808, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29648,

  • BS: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28292, https://klog.icrr.u-tokyo.ac.jp/osl/?r=28352, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29432

  • SRM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28373, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29584

  • SR2: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28369, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29498

  • SR3: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28368, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29199

• Mirror conditions(??)
  • Clean around the center?

Oplev Check for PR2,3,BS,SRM,SR2,SR3. (Yokozawa-kun)

Activities

• All seem to be fine: BS, SR2, SR3, SRM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29670

Beam Power

Beam Path Clearance

QPD centering

Calibration

Spectrum Health

Oplev beam's stray light influence

• almost no light?

Oplev table covering

• we will do this after closing.

Beam Path and Baffle Position

• IR
  • Optical beam alignment from BS to SRM

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29635

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29630

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29632

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29635

  • Mid baffles and stray light inspection around SR3, SR2, and SRM

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29629

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29636

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29642

• GR
  • GRX

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28558

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28579

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28860

    • TMSX : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29131

    • for IFI-PRM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29261

    • for IFI-PRM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29282

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29299

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29341

  • GRY

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28689

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28827

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28847

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28861

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28898

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=28920

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29115

• IR/GR arm alignment
  • X-arm:

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29346,

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29448,

    • Finesse: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29586

  • Y-arm: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29478

Leaked hermetic flange repair on BS

• Finished: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29146, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29088, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29146

Vacuum system (Kimura/Uchiyama and their selected persons)

Clean inside as much as possible including the bellows duct with TMP

• maybe impossible from the only side hatches.

Check the flange seal surface condition where were opened.

Decide where the elastomer/Metal gasket will be used.

Check the opened flanges and the top hut of PRM2, 3

Logistic to reinstall the bellows duct with TMP.

• Sawada-sana and Mirapro members call
• If you use chain block, please be careful of its fixing
• Careful cramp tightening near oplevs.