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Size: 1612
Comment:
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Size: 2088
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 6: | Line 6: |
| * | * Higher mode rejection -> OK with good mode matching. * New optical board to remove additional structure for resonance dumping. * New high-quality mirror. -> 97% T_FP. * Replacement of the broken PD * 800 Hz resonance still remains. -> unstable lock in air. Pumping down OMC are will mitigate this resonance. * FP_tra estimation in air ~ 0.89 derived by subtracting HOMs power sum from the total power. * |
| Line 18: | Line 25: |
| * OMMT2T optical setting (Ushiba, Akutsu, Miyoki, Sato) | * OMMT2T optical setting for sensing OMMT1/SR2 motion separately (Ushiba, Akutsu, Miyoki, Sato, Takahashi) |
OMC Closing Review (2022/11/18)
Higher mode rejection -> OK with good mode matching.
- New optical board to remove additional structure for resonance dumping.
New high-quality mirror. -> 97% T_FP.
- Replacement of the broken PD
800 Hz resonance still remains. -> unstable lock in air. Pumping down OMC are will mitigate this resonance.
- FP_tra estimation in air ~ 0.89 derived by subtracting HOMs power sum from the total power.
OMMT1, OMMT2, OSTM Suspension (Takahasi, NAOJ)
- Transfer Function
- OSEM output values
- Space btw magnets and plates
- Pico motion
Installation Acceptance Document for modified sub-optics in the OMM and OMC chambers (Akutstu, NAOJ)
- OMMT2T optical setting for sensing OMMT1/SR2 motion separately (Ushiba, Akutsu, Miyoki, Sato, Takahashi)
- Final alignment and Iris removal.
- Reliable cover using aluminum foils.
- Vacuum Issues
Clamp preparation -> OK, f300 -> metal, f800 -> elastomer,
TMP/IP alignment OMC-OMMT-TMIPunit.pdf
- Opened viewports confirmation
- Cleaning inside
- Leak in GV_srm-OMM again??
Slow pumping as IFI-IMMT/IMC -> Suspension Monitoring(Takahashi-san + alpha)