Differences between revisions 26 and 108 (spanning 82 versions)
⇤ ← Revision 26 as of 2024-03-22 08:22:51 →
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Comment:
← Revision 108 as of 2024-04-05 16:16:04 → ⇥
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Editor: miyoki
Comment:
Deletions are marked like this. Additions are marked like this.
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IMC Ecovery(20240322) IMC recovery(20240322)
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  * Electrical wirings
   * Coil resistances and inductances
    * MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28668
    *MCi/e: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28696
   * Isolation of Wiring from coils to flanges(pico and mag-coil)
    * MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28911
    * MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28910
    * POM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28914
   * Fixing on tables is tight and reliable?
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    *
   * Smooth Mag-coil motion and balance and TFs
    * balance can be adjusted after closing?
    * Health MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28890
    * Health MCi: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28889
    * Health MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28915
   * Gaps between magnets and coils
   * Gaps between EQ stoppers and mirrors		     * MCi/o: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28907 -> --(A.I. upload pitch pico pictures (R.Takahashi), or taking picture for pitch pico.)-- -> https://klog.icrr.u-tokyo.ac.jp/osl/?r=28941
    * MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28909 -> --(A.I. upload pitch, yaw pico pictures (R.Takahashi), or taking picture for pitch, yaw pico.)-- -> https://klog.icrr.u-tokyo.ac.jp/osl/?r=28941
   * Gaps between magnets and coils -> MCo upper is the minimum, but this is the best effort.
   * Gaps between EQ stoppers and mirrors -> confirmed less than 1mm.
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  * Electrical wirings
   * Coil resistances and inductances -> A.I. Inductances should refer the past data if the coil did not change, or it will be measured again (Wasimi, 3/24(Monday morning)
    * MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28668 -> A.I. MCo H4 looks high, it could be disconnection. It should be measured again (Wasimi, 3/24(Monday morning).
    *MCi/e: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28696 -> One of the MCi resistances is low, but low may have no problem. If it is high, it may have some disconnection.
   * Isolation of Wiring from coils to flanges(pico and mag-coil) -> MCi could not be accessed.
    * MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28911 -> improved
    * MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28910 -> improved
    * POM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28914 -> This does not matter for the suspension.
   * Fixing on tables is tight and reliable?
  * Smooth Mag-coil motion and balance and TFs
   * balance can be adjusted after closing?
   * MCi: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28938
   * MCo: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28939
   * MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28940 -> A.I. Peak of pitch-shifted to higher frequency from the result of Feb.2. Needs remote centering for the Oplev first (Ushiba).
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   * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28937
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 *Beam damping(T.Akutsu)  *Beam dump(T.Akutsu)
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  * Beam dampers were additionally added?
   * In basic, No. Relocation was done. https://klog.icrr.u-tokyo.ac.jp/osl/?r=28931		   * Beam dumps were additionally added?
   * In basic, No. Relocation was done. https://klog.icrr.u-tokyo.ac.jp/osl/?r=28931 -> Inside of beam duct between PSL and iMC looks shining.
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   * No dust inside, especially on the bottom?
  * Leak point was fastened tightly?		    * No dust inside, especially on the bottom? -> A.I. before closing.
  * Leak point was fastened tightly? -> A.I. when closing.
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  * MCE trans flange rotation (the past activity is in https://klog.icrr.u-tokyo.ac.jp/osl/?r=28326)   * MCE trans flange rotation (the past activity is in https://klog.icrr.u-tokyo.ac.jp/osl/?r=28326) -> it will be done on Mon.
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  * FFU stop for the MCE/MCREFL optical table and reconstruction of the window shield (MCE, MCF?).   * FFU stop for the MCE/MCREFL optical table and reconstruction of the window shield (MCE, MCF?). -> measurement of length of legs.
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----
Summary
----
 * TF of MCe had a shift of peak frequency on the pitch. Ushiba-kun will measure it again with the well-centered oplev. It will be reported at the recovery meeting or later.
 * All others should be OK for closing IMC chambers.
  * The resistance of the Coil of MCo H4 looked high. Washimi-kun will measure it again on Monday, but it won't stop closing anyway.
  * Washimi-kun will measure inductances again on Monday.
  * Check no dust inside, especially on the bottom before closing.
  * Check the leak points are fastened tightly when closing.
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??? Recovery(202404??) X-Pcal Recovery(20240402)
------
 * [[ https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15709 | Dan's presentation files ]]
  * Path2 drift is concerns. However, we expect we can compensate for the drift by using pico-mirrors.
  * 5% power loss is concerned. It should be checked on 3~4 April. --> [[ https://klog.icrr.u-tokyo.ac.jp/osl/?r=29065 | klog#29065 ]]
  * Pcal-X noise in the Cal line is OK? --> [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=29075 | klog#29075 ]]

------
EXC Recovery(20240404)
------
 * Suspension health check (Takahashi, Ushiba)
  * A01: Cable check
   * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28840 -> please update.
   * Other data are expected to be normal.
  * A02 Porality Check
   * impossible to change. so no problem.
   * Cable disconnection happened, but they were recovered.
   * Replaced magnets was checked by TF etc.
   * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29100
  * A03 Rubbing Check
   * ttps://klog.icrr.u-tokyo.ac.jp/osl/?r=29100
  * A04: Range and Calibration
   * The stepper motor range was checked.
   * Calibration will be the same.
  * A05: Watchdog Setting: Skip
  * A06: Height Measurement
   * Done: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28780
   * Setpoint change after the height setting. So the height could be changed.
   * If we believe LVDT values, we believe the height would not change in the orders of mm.
  * A08: Calibration:skip
  * A09: Spectrum(spectra of IM/MN photosensors.)
   * OK https://klog.icrr.u-tokyo.ac.jp/osl/?r=29102
   * OK https://klog.icrr.u-tokyo.ac.jp/osl/?r=29107
  * A10: Transfer Function
   * OK as modeling: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29100, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29106
   * Phase delay in R -> R, but no such delay in other DoFs. The data in the air tends to have such phase delay in the DoFs. No influence on IFO/Sensitivity.
   * BF resonance has changed from 0.3 to 0.6Hz. Assuming this changes, the TF can be explained. https://klog.icrr.u-tokyo.ac.jp/osl/?r=28990, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29106
   * We need change the filter shape according to these changes. UGF was set around 0.01Hz. So a fine tune is necessary.
 * Oplev Check (Yokozawa, Akutsu)
  * MN: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28905
  * TM: Easy to find. SI should be cared. Will be don in Monday.
  * PF: Easy to find. SI should be cared. Will be don in Monday.
 * Green flash at REFL and Trans PD
  * REFL: OK
  * TMSX: No beam on PD. will be done on Monday. No CCD and PD at present.
  * Flash can be seen in Tcam.
 * X-Pcal homeworks
  * The spec loss at PBS can be comparable with the mysterious loss: Loss of power of ~ 4 %: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29081
  * Cleaning inside was done: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29091

 *Windows Cleaning
  * Done: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28976,
  * Blanck ports:
  * check whether bolts have holes or not.

 * Tcam (Yokozawa and ChenDan, and Yamamoto)
  * Consistent with CAL data: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28830
  * Grenn image can be seen.
  * No problems from the Pcal side.

 * TMSX optical system (Akutsu and his selected persons)

 * Baffle PDs (Yokozawa and his selected persons):
  * Check on Monday.
  * A power supplier is ready?

 * NAB, WAB (Akutsu)
  * NAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28757
  * WAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28758, https://klog.icrr.u-tokyo.ac.jp/osl/?r=28627

 * Vacuum system (Kimura-san / Uchiyama-kun and their selected persons)
  * tie rod adjustment between EXC and TMSX to avoid stress when the only EXC side is pumped down.
  * Replaced flange
  * Nasty air parts were replaced.
  * Vacuum alert recovery after pumping down.
  * GV interlock will be tried after pumping down.
  * The broken cc-10 was replaced.
  * N2 purge is necessary for EXV.

 * Cryo-system (Kimura-san and his selected persons)
  * All temp signals are obtained?
  * Connector change is required for the heat link suspensions.
  * Cryocon alert to slack after cooling.
  * No interlock for TMS around the Cryostat.


------
*** Recovery(202404??)
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??? Recovery(202404??) *** Recovery(202404??)

IMC recovery(20240322)

one of templates for IMC closing by Akutsu-kun in 2021.

Summary

  • TF of MCe had a shift of peak frequency on the pitch. Ushiba-kun will measure it again with the well-centered oplev. It will be reported at the recovery meeting or later.
  • All others should be OK for closing IMC chambers.
    • The resistance of the Coil of MCo H4 looked high. Washimi-kun will measure it again on Monday, but it won't stop closing anyway.
    • Washimi-kun will measure inductances again on Monday.
    • Check no dust inside, especially on the bottom before closing.
    • Check the leak points are fastened tightly when closing.

X-Pcal Recovery(20240402)

  • Dan's presentation files

    • Path2 drift is concerns. However, we expect we can compensate for the drift by using pico-mirrors.

    • 5% power loss is concerned. It should be checked on 3~4 April. --> klog#29065

    • Pcal-X noise in the Cal line is OK? --> klog#29075

EXC Recovery(20240404)

*** Recovery(202404??)

*** Recovery(202404??)

KAGRA/IFOIntegration2024/Recovery20240322 (last edited 2024-04-05 16:16:04 by miyoki)