2019/7/4(Thur.)

Schedule

• ITMX
• ETMX
• ITMY
  • 7/4: Turbo pump on
• ETMY
  • 7/4: Turbo pump on
• Long term:

  • 4/22-5/31: Yarm commissioning

  • 5/27-6/30: DRMI commissioning

  • 7/1-8/9: FPMI/DRFPMI commissioning
  • 8/12-10/4: ASC
  • 10/7-11/15: Post Commissioning
  • 11/18-12/13: Noise hunting

Note

• Please reduce the number or speed of 16kHz channels.
• GV of BS side can be opened on 7/5, but still please do not oped are side.

Night work

Weekend

Report of work

• OMC: Transmissibility was too low ~30%.
  • Beam was blocked by on of the mirror mount.
  • Finesse was ~400, design ~800.
  • Needs calibrated PD.
• COM: PRMI with 3f was tried and it worked. It was actually transition from 1f to 3f.
  • Some DRMI work. Lock lasted ~10min, it was very sensitive to alignment.
• ISS: Measured RIN with second loop on.
  • In-loop and out-loop noise were matched well.
  • Noise was 1e-7.
• CAL: Upper beam of Pcal on ETMY was lost. It will be fixed soon.
• VAC: Turbo pump tuned on for ITMY this morning and ETMY yesterday.
  • GV of BS side can be opened tomorrow, but still please do not oped are side.

Work plan

• Type B: some measurement will be done.