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Size: 2777
Comment:
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Size: 2399
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
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| Optical Path from IMC to PRM | Suspension Condition of IMMT1/2. (Takahashi, Ushiba) ---- IMMT1/2 * Mechanical Motion * Smooth pico motion and its default position * * Gaps between magnets and coils * * Gaps between EQ stoppers and mirrors -> confirmed less than 1mm. * * Electrical wirings * Coil resistances and inductances -> * * Isolation of Wiring from coils to flanges(pico and mag-coil) -> * * Fixing on tables is tight and reliable? * * Smooth Mag-coil motion and balance and TFs * * Spectrum * * Mirror conditions(??) * Clean around the center? * *Beam dump(T.Akutsu) * Beam shield * * Beam dumps were additionally added? * In basic, No. Relocation was done. ---- Beam Path from IMC to PRM (Yokozawa, and Akutsu) |
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| * Mirror mount stability with cables * Beam positions on them * Trans beam from STM2 |
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| IFI to IMMT1 * IFI injection: No clipping * Beam position on IMMT1 * Trans beam of IMMT1 * No change to ISS path? * ISS beam/CWP reflection beam extracting (??) * the beam paths are clear? * The beams hit around the center of windows? * The reflected beams on the windows are dumped? IMMT1-IMMT2 * Beam clearance: no problem * Beam position on IMMT2 IMMT2-PRM * Main beam/misaligned beam clearances: no problem against the beam dumper * The misaligned beam position: hits on the dumper(?) and the temp enhancement was detected. Around PRM * Beam position on PRM * IR beam in the midsize baffles(HR/AR side) Beam Dumper * Thermometer works? |
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| *0.7-0.8 mW input: | * |
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| Oplev table Covering | Oplev table covering |
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| ---------------------------------------------------------------- | ---- Vacuum system (Kimura/Uchiyama and their selected persons) ---- Clean inside as much as possible including bellows duct with TMP * |
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| ---- (3)Mid-size Baffles (Akutsu-kun and his selected persons) ---- Done on 22nd August. Approved all processes of setting the mid-size baffles. (SR3 oplev path is pointed out to be near the structure.) ---- (4)Beam Path (Ushiba-kun, Tanaka-kun?, Hirose-san?) ---- Main beam - IR beam hit and through around the center (or acceptable area) of optics from inside IFI tank -> SRM. GR beam - GR beam hit and through around the center (or acceptable area) of optics? (assuming GR beam on POP/POS also pass through around the center (or acceptable area) of optics) IR from the misaligned PRM - Does it hit on the Dumper? - The misaligned position repeatability is good or well controlled by oplev/something? Relative positions btw Mid-size baffles and IR/GR. AR-SRM reflection beam control - Where is the reflected beam from SRM? When misaligned, should it hit the mid-size baffle on SR2 or other? Should we make it possible to align SRM even if it has less reflectivity for RSE? ---- (5)IFI-IMMT tank ---- Stray light mitigation(Akutus-kun and selected persons) - The predicted stray beams are dumped? - Is there any missing stray beam paths? ISS beam/CWP reflection beam extracting (??) - the beam paths are clear? - The beams hit around the center of windows? - The reflected beams on the windows are dumped? (The IFI new poles seem to be dangerous due to the vibration made by drilling.) Beam dumper(Akutsu-kun and selected pesrons) - Does the thermometer works? ---- (6)Vacuum system (Kimura-san / Uchiyama-kun and their selected persons) ---- Numbering for all ports. Check the flange seal surface condition. |
Check the flange seal surface condition where were opened. * KF400 flange with a Copper plate-> change with a curved flange. * |
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| * | |
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| Top hat seal surface check for SRM/2/3 BS PRM/2/3. ICF152 flange preparation for the new reducer flanges at SRM/PRM. Check dust/fungus in stocked tubes/bellows. ---- (7)Cleanness of Mirrors HR/AR ---- FC was done for all mirrors' HR/AR, except for OMC Typ-C mirrors. Check the surfaces and inside again before closing, and blow/absorb as much as possible if you find anything. ---- (8)Vacuum tank cleaning ---- In Basic, the cleaning was done after FC. Check inside again and clean just before closing if you find something. |
Logistic to reinstall the bellows duct with TMP. * Sawada-sana nd Mirapro members call * |
Suspension Condition of IMMT1/2. (Takahashi, Ushiba)
IMMT1/2
- Mechanical Motion
- Smooth pico motion and its default position
- Gaps between magnets and coils
Gaps between EQ stoppers and mirrors -> confirmed less than 1mm.
- Smooth pico motion and its default position
- Electrical wirings
Coil resistances and inductances ->
Isolation of Wiring from coils to flanges(pico and mag-coil) ->
- Fixing on tables is tight and reliable?
- Smooth Mag-coil motion and balance and TFs
- Spectrum
- Mirror conditions(??)
- Clean around the center?
- Clean around the center?
- Beam dump(T.Akutsu)
- Beam shield
- Beam dumps were additionally added?
- In basic, No. Relocation was done.
- Beam shield
Beam Path from IMC to PRM (Yokozawa, and Akutsu)
STM1/2
- Mirror mount stability with cables
- Beam positions on them
- Trans beam from STM2
IFI to IMMT1
- IFI injection: No clipping
- Beam position on IMMT1
- Trans beam of IMMT1
- No change to ISS path?
- ISS beam/CWP reflection beam extracting (??)
- the beam paths are clear?
- The beams hit around the center of windows?
- The reflected beams on the windows are dumped?
IMMT1-IMMT2
- Beam clearance: no problem
- Beam position on IMMT2
IMMT2-PRM
- Main beam/misaligned beam clearances: no problem against the beam dumper
- The misaligned beam position: hits on the dumper(?) and the temp enhancement was detected.
Around PRM
- Beam position on PRM
- IR beam in the midsize baffles(HR/AR side)
Beam Dumper
- Thermometer works?
Oplev Check for IMMT1. (Yokozawa-kun)
Beam Power
Beam Path Clearance
- IMMT1
QPD centering
Calibration
PYL Separation(after pumping?)
Spectrum Health
Oplev beam's stray light influence
- almost no light? as before.
Oplev table covering
- we will do this after closing.
Vacuum system (Kimura/Uchiyama and their selected persons)
Clean inside as much as possible including bellows duct with TMP
Check the flange seal surface condition where were opened.
KF400 flange with a Copper plate-> change with a curved flange.
Decide where the elastomer/Metal gasket will be used.
Logistic to reinstall the bellows duct with TMP.
- Sawada-sana nd Mirapro members call