Differences between revisions 78 and 104 (spanning 26 versions)
⇤ ← Revision 78 as of 2024-04-05 11:31:21 →
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Editor: miyoki
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← Revision 104 as of 2024-04-05 16:06:34 → ⇥
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Editor: miyoki
Comment:
Deletions are marked like this. Additions are marked like this.
Line 7: Line 7:
    * MCi/o: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28907 -> --(A.I. upload picth pico pictues (R.Takahashi), or taking picture for picth pico.)-- -> https://klog.icrr.u-tokyo.ac.jp/osl/?r=28941     * 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
Line 20: Line 20:
    * POM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28914 -> this does not matter for the suspension.     * POM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28914 -> This does not matter for the suspension.
Line 26: Line 26:
   * MCe: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28940 -> A.I. Peak of pitch shifted to higher frequency from result of Feb.2. Needs remote centering for the Oplev first (Ushiba).    * 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).
Line 73: Line 73:
 * TF of MCe had a shift of peak frequency on pitch. Ushiba-kun will measure it again with the well-centered oplev. It will be reported at the recovery meeting or later.  * 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.
Line 90: Line 90:
EXC Recovery(202404??) EXC Recovery(20240404)
Line 94: Line 94:
   *
  * A02 Porality Check Type-A/C-Payload
   *		    * 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
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   *    * ttps://klog.icrr.u-tokyo.ac.jp/osl/?r=29100
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   *    * The stepper motor range was checked.
   * Calibration will be the same.
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  * A08: Calibration
   *A
   *C
  * A09: Spectrum
   *A
   *C		    * 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
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   * Some GASs are strange? : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29100    * 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.
Line 114: Line 122:
  * TM:
  * PF:		   * 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.
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  * Trans: No beam on PD.
   * TMSX: No beam on PD. will be done on Monday. No CCD and PD at present.
  * Flash can be seen in Tcam.
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  * Loss of power of ~ 5%: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29081
  * Cleaning: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29091		   * 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
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  * check whether bolts have holes or not.
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  * 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.
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 * Baffle PDs (Yokozawa and his selected persons)  * Baffle PDs (Yokozawa and his selected persons):
  * Check on Monday. A power supplier is ready?
Line 140: Line 153:
  * Replaced flange

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)