Differences between revisions 93 and 108 (spanning 15 versions)
⇤ ← Revision 93 as of 2024-04-05 15:24:37 →
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Editor: miyoki
Comment:
← Revision 108 as of 2024-04-05 16:16:04 → ⇥
Size: 9111
Editor: miyoki
Comment:
Deletions are marked like this. Additions are marked like this.
Line 114: Line 114:
   * OK https://klog.icrr.u-tokyo.ac.jp/osl/?r=29107
Line 116: Line 117:
   * 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 118: Line 122:
  * TM: Easy to find.
  * 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.
Line 122: Line 126:
  * TMSX: 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.
Line 125: Line 129:
  * The spec loss at PBS can be comparable with the mysterious loss: Loss of power of ~ 5%: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29081
  * Cleaning inside was done : 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
Line 131: Line 135:
  * check whether bolts have holes or not.
Line 133: Line 138:
  * 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.
Line 136: Line 144:
 * Baffle PDs (Yokozawa and his selected persons)  * Baffle PDs (Yokozawa and his selected persons):
  * Check on Monday.
  * A power supplier is ready?
Line 143: Line 153:
  * tie rods adjustment between EXC and TMSX to avoid stress when the only EXC side is pumped down.   * tie rod adjustment between EXC and TMSX to avoid stress when the only EXC side is pumped down.
Line 145: Line 155:
  * 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.
Line 148: Line 163:
  * Connector change is required for the heat link suspensions.
  * Cryocon alert to slack after cooling.
  * No interlock for TMS around the Cryostat.

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)