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Size: 2777
Comment:
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Size: 3292
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. * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29314 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29313 * 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 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29320 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29319 * 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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| Activities: * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29261 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29271 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29273 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29282 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29283 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29285 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29299 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29308 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29334 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29342 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29343 IMC to STM1 * Beam clearance: OK |
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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) Main Beam Dumper * Thermometer works? Stray light dumpers * |
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| *0.7-0.8 mW input: | * |
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| PYL Separation(after pumping?) * |
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| Oplev table Covering | Oplev table covering |
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| ---------------------------------------------------------------- | ---- Vacuum system (Kimura/Uchiyama and their selected persons) ---- Close GV btw PRM and PR3 and stad bolt nut adjustment btw PRM and PR3 * |
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| ---- (3)Mid-size Baffles (Akutsu-kun and his selected persons) ---- |
Clean inside as much as possible including the bellows duct with TMP * |
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| 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 Copperplate -> 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 and Mirapro members call * If you use chain block, please be careful of its fixing |
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?
- 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)
Activities:
IMC to STM1
- Beam clearance: OK
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)
Main Beam Dumper
- Thermometer works?
Stray light dumpers
Oplev Check for IMMT1. (Yokozawa-kun)
Beam Power
Beam Path Clearance
- IMMT1
QPD centering
Calibration
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)
Close GV btw PRM and PR3 and stad bolt nut adjustment btw PRM and PR3
Clean inside as much as possible including the bellows duct with TMP
Check the flange seal surface condition where were opened.
KF400 flange with a Copperplate -> change with a curved flange.
Decide where the elastomer/Metal gasket will be used.
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