== Weekly PEM meeting ==
 * 2025/01/24(Fri) 17:00-
 * Regular meeting
 * Zoom2 : https://zoom.us/j/6676627462

==== General announcement ====

 * Author list 2024
  * Thank you for your contribution

 * Virgo ENV member visiting
  * KAGRA 2/17 - 3/8
  * Plan 
   * Noise hunting (PEM injection) toward the 10 Mpc would be first priority
   * IFI characterization (not decided)
   * OMC shround installation (not decided)
   * Measurement of the coldbox in somewhere Japan

 * O4a noise budget paper
  * If you have a plan to write the paper using O4a data and PEM, please let me know.

 * Start the investigation for the new subsystem, noise subtraction, under the SEO.
  * Establish 

==== Meeting and Conference issue ====

  * TOBA and Gravity Gradient Workshop
   * Now discussing among the member
   * Candidate 3/14 - 15

  * JPS meeting
   * Online
   * Ohashi
    * Estimation of the microseismic motion at the KAGRA site using neural networks (II)
   * Sato
    * 重力波望遠鏡KAGRAにおける音響雑音

  * Other meetings [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/DAWG/conferences|url]]

If you have some presentation about PEM related, please contact to me.

==== Business travel ====

 * To Kamioka
  * Virgo member (2/17 - 3/8)
  * Sato Niigata.U (2/12-21?)
  * Aoyama group (2/24 - 2/28)
 * From Kamioka
  * Yokozawa (Tokyo 2/25,26)
  * Yokozawa (Kashiwa, Tokyo 3/12-15)

==== General issue ====

 * Commissioning

  * PRFPMI
   * cooling down is performing
    * All suspensions achieved 88-89 K, keep this temperature
   * Optical table treatment for high power operation done
    * Installing the BS or reducer to avoid the PD saturation
    * 10 W IFO lock (PRFPMI RF lock) performed ~ 5 min, need the tuning of the ASC with high power
    * and we need to add the 1.7 Hz L damping, trial using the PF oplevs
   * Noise budget performed (before cooling down)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=32360|klog32360]]


 * 出張PEM injection ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14016|planning form]])

==== Jurnal paper issue ====
[[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/PEM/Reports/JurnalPaperIssue|Details are here!]]

 * O4 PEM paper
  * Start to investigate the topics

 * Schumann Resonance paper
  * Todo list work

 * 1 Hz seismic motion paper
  * Start the investigation

==== Preparation for O4b ====

 * Coil preparation for magnetic injection

 * Voltmeter preparation
  * AC power monitor installation
  * DC power monitor installation

==== Progress report ====

 * Sato
  * Acoustic injection analysis

 * Ohashi
  * Microseismic noise with machine learning

 * Kume, Ueno
  * Noise subtraction

 * Nishizawa
  * Water newtonian noise
  * Magnetic field analysis

 * Washimi 
  * Preparation of the injection tools

 * Yokozawa 
  * Noise hunting

==== Place for memo ====
 * [[https://www.gw-openscience.org/O3/o3aspeclines/|Line noise list in O3a public data]]
 * [[https://pubplan.ligo.org/CW/KAGRA_VectorDM.html|Summary page for KAGRA O3 vector dark matter]]