Differences between revisions 1 and 15 (spanning 14 versions)
Revision 1 as of 2024-04-06 07:52:37
Size: 1378
Editor: miyoki
Comment:
Revision 15 as of 2024-04-12 15:51:22
Size: 2406
Comment:
Deletions are marked like this. Additions are marked like this.
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   *    * Re-cabling of BF damper
   * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28993
   * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29177
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   *    * Magnet gluing
   * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28831
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   *    * judge by the transfer functions
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   *    * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29064
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   *    * ITMY IM/MN photosensors: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29140
   * ITMY tower sensor: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29141
     * Moving peaks exist, but amplitudes are not so high and frequency is far from controls. -> accept
     * 2nd and 3rd graph shows it can be removed when evacuated. -> accept, we should check it after the pump down.
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   *    * Transsfer function : https://klog.icrr.u-tokyo.ac.jp/osl/?r=29138
    * F0 is close to the edge, so the gain is high. -> accept
    * F1 is within the range enough, we have no explanation for why the gain is so high. The reason for the dip of 8Hz depends on coupling, the earthquake might change the coupling. 1.6Hz peak showed in the new data, but we do not know why. However, no control is applied, so -> accept
   * EQ stop: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29087
    
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  *    * path check: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29098
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 * X-Pcal homeworks
  *
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  *    * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29128
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 * TMSX optical system (Akutsu and his selected persons)
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  *    * NAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28998
   * WAB: https://klog.icrr.u-tokyo.ac.jp/osl/?r=28984
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  * tie rod adjustment between EXC and TMSX to avoid stress when the only EXC side is pumped down.
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  * The broken cc-10 was replaced.
* N2 purge is necessary for EXV.
  * N2 purge is necessary for IYV.
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  * Connector change is required for the heat link suspensions.


IYC Recovery(20240407)


KAGRA/Recovery2024/IYC (last edited 2024-04-15 12:31:12 by TakashiUchiyama)