PR2,3,BS,SRM,SR2,SR3 Cleaning(Aso-kun, Hirata-san)

PR2: Acceptable after FCing

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

PR3: Slight dots could not be removed by even pure water. We accepted this situation.

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

No cleaning for BS, SRM, SR2, SR3

• Did you eyeballs checks 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: OK

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

      • Position measurement of the traverse: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28637, 3mm +Y side adjustment was done.

    • PR3: OK

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

      • Position measurement of the traverse: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28718

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

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

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

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

    • SRMs: OK for wider space: 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

  • SR2 : https://klog.icrr.u-tokyo.ac.jp/osl/?r=28355

  • SR3: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28353

  • SRM: OK even after earthquakes.
  • Temperature should be the same in the future.
• Electrical wirings

  • Coil resistances and inductances ->

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

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

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

    • SRM:
    • SR2:
    • SR3:
• DAC noise

  • SRM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=26230

  • SR2/3: done before Jan 1st 2024.
• OSEM conditions: Ratations were found so much. But they could be acceptable from the point t of view of signals.

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

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

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

  • SRM: OK: 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: OK: 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: OK: 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 ---> Should be taken.

  • PR2: OK: 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: OK: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28808, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29648,

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

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

  • SR3: OK: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28368, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29199 (TF is OK, Blending problem happened on the peaks. Please write this contents in klog!)

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

• Photos in PR2 and PR3 chambers will be taken.

Beam Power

Beam Path Clearance

• beam pathes were checked but it is difficult to take photos.

  • PR2: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29345

  • PR3: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28896

  • BS and SRs: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29670

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

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29690

    • https://klog.icrr.u-tokyo.ac.jp/osl/?r=29703

  • SR transmission (IR) will be checked.
  • SRM front surface reflection could not be found.
  • IR beam might be clipped at PR3 HR mid-baffle.
• 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)

Open the GV between SRM-SR3, and Close the GV between SRM-OMC !!

• tierod adjustment for the GV on the SRM side.

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

• PR3, PR3, BS :
• SR2, SR3, SRM : 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

• PR2: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29413

• PR3: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29412

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.