Suspension Condition of PRM, IMMT1/2. (Takahashi-san, Ushiba-kun)
IMMT1/2, PRM
- 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 Path from IMC to PRM (Yokozawa-kun, and Akutsu-kun)
Activities:
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29261 (Finalization of IFI-IMM-PRM: Day 1 PM)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29271 (Comment to Finalization of IFI-IMM-PRM: Day 1 PM)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29273 (Finalization of IFI-IMM-PRM: Day 2)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29282 (Finalization of IFI-IMM-PRM: Day 3 AM)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29283 (Finalization of IFI-IMM-PRM: Day 3 PM)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29285 (Comment to Finalization of IFI-IMM-PRM: Day 3 PM)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29299 (Finalization of IFI-IMM-PRM: Day 4)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29308 (Finalization of IFI-IMM-PRM: Day 5)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29334 (Finalization of IFI-IMM-PRM: Day 6)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29342 (Finalization of IFI-IMM-PRM: Day 7-1)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29343 (Finalization of IFI-IMM-PRM: Day 7-2)
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: shifted from the center.
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: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29340
- Visual Inspection: after the IR recovery.
- Beam Clearance: OK with the main IR beam
Beam dump(T.Akutsu)
some shiny remnant: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29343, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29342
- Beam dumps were additionally added?
- In basic, No. Relocation was done?
PRM Cleaning (Hirata-san, Aso-kun)
PRM
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29254 (April 17)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29244 (April 16)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29228 (April 15)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29216 (April 12)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29202 (April 11)
Oplev Check for IMMT1. (Yokozawa-kun)
Activities:
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.
ISS path
Check the path by Miyakawa-kun
- ??
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: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29377
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