= Type-A control meeting 2020/8/4 =

[[https://zoom.us/j/6676627462|Zoom 2]]

== Agenda ==
 * Control simulation result with the upgraded actuators [Shoda] [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11862|Slides]]
 * Modal damping [Nakano] [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11861|Slides]]
 * Eddy current damping [Ushiba] [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11863|Slides]]

== A/I ==
 * Modal Damping
  * Near term
   * Implement it to one of the ETMs (Nakano, Miyo)
    * Try lock acquisition
   * If the above works, implement to all the Type-As (Nakano, Miyo)
    * Then lock PRFPMI and check the low frequency noise
  * Longer term
   * If successful with Type-A, implement it to all the other suspensions.
  * Improvement
   * Form optimal combinations of actuators for each mode
  * Integration with Simulation
   * Import the modal damping for one of the modes to the current model (Shoda)
   * See if we can reproduce the phase delays between stages by introducing asymmetries in the suspension model (Shoda)

 * Eddy current damping of MN coil bobbins
  * More detailed calculations with the method described in [[https://arxiv.org/abs/2007.09571]] (Ushiba)