= Agenda/Minutes of the VIS Meeting on 2020/2/14 =
2020/2/14 14:00 - 15:45

[[https://zoom.us/j/203743987|Zoom Meeting]]

Participants: Takahashi, Sato, Hirata, Aso, Fabian, Tanaka, Shoda, Okutomi, Lucia

[[https://paper.dropbox.com/doc/VIS-Commissioning-Task-List--AlK26n6oP8QHU_XUQriwv2PvAg-RKcNXfMFrqOtTAPU48qQf|VIS Commissioning Task List]]

[[https://onedrive.live.com/view.aspx?resid=8E8081C20FE5EC3A!2278&ithint=file,xlsx&authkey=!AMFNtNa-Y6CVp94|Post-O3 task list]]

[[https://www.dropbox.com/s/e0inlp006spuj4m/Schedule%20after%20O3.pdf?dl=0|Schedule afetr O3]]

[[https://www.dropbox.com/s/9l1h0fw9kc1pzmm/Proocurement%202019FY.xlsx?dl=0|Procurement list in 2019FY]]

== Progress report ==
=== Type-A ===
==== Past week report ====

 * Top Filter Yaw fishing rod prototype testing
  * Test was done. Limit switch works normally. [[https://www.dropbox.com/s/gwr9mx211kwa6kj/TF%20Yaw%20Prototype.AVI?dl=0|(200Mbyte)]]
  * But the movement of the switch lever has periodic fluctuations. The cause will be investigated.

 * Transfer function measurements (L.Trozzo, T. Yamada, T. Yokozawa)
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12842|klog#12842]]
 * Control noise projection (T. Yamada)
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12861|klog#12861]]
 * Damping loop modifications (M. Nakano, T. Ushiba)
  * ETMY F0 GAS [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12860|klog#12860]]
  * ITMX MN OpLev [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12862|klog#12862]]
  * ITMY MN OpLev [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12862|klog#12862]]
  * ETMY TM yaw [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12937|klog#12937]]

==== Plan for coming weeks ====

 * ETMY TM coil driver will be replaced to a normal high-power coil driver this evening. (K. Okutomi)

=== Type B ===
==== Past week report ====
 * Oplev box:  I got information from Hagiwara-san and Ushiba-san.
 * I will show the design I have.

==== Plan for coming weeks ====
=== Type-Bp ===
==== Past week report ====
==== Plan for coming weeks ====
=== OMMT & OSTM ===
==== Past week report ====
==== Plan for coming weeks ====
=== VIS electronics ===
==== Past week report ====
 * Measured the TF of the combiner itself and the TF from the actuator coil to the output of demodulator (AD630) with the low-pass filter.
 * Found an excess around 20Hz in the demodulator output. 
==== Plan for coming weeks ====
=== Other site works ===
=== Safety ===
== Discussion ==
 * Wire gluing in PR3.
 * C2C request in 2020FY.

== Travel Plans ==
 * Travel (Week of 2/17):
  * Takahashi:
  * Sato: 19-21(shift)
  * Hirata: 20-22(shift)
  * Shoda: 18-20(shift)
  * Fujii:
  * Tanaka:

 * Travel (Week of 2/24):
  * Takahashi:
  * Sato:
  * Hirata:
  * Shoda:
  * Fujii:
  * Tanaka:

== Next meeting ==
On 2020/2/21(Fri)