= Agenda/Minutes of the VIS Meeting on 2018/7/20 =

2018/7/20 13:30 - 15:00

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

Participants: Mark, Takahashi, Aso, Panwei, Terrence, Fabian, Enzo, Hirata, Pan, Okutomi, Sato, Tanioka, Ishizaki, Fujii, Lucia, Eleonora, Tanaka, Shoda, Kozu

== Progress report ==
=== Schedule Chart ===
Type-A  : ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7320|PDF/MPP]])

Type-B: ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|PDF/MPP]])

=== Type-A (Takahashi) ===
==== Past week report ====

[SRM]
  * Dismounted the top filter for SRM from the IP for Type-A. Packed the IP to the box.
  * Combined the top filter and the IP.

[Y-front]
  * Transported the IPs from/to the first floor.
  * Measured the transfer functions of the BF/F3/F2 by the digital system.
  * Cabled in the F1.
  * Assembled the cup of F1 (Cu plates, connector plates) and closed the cup.
  * Measured the weight of F1.

[X-front]
  * Evaluated the ACCs.
  * Fixed the cables between the cryo-payload (CP) and the BF at the lower points on the wire.
  * Connected the cables to the BF.
  * The CP was installed and suspended from the BF.
  * Adjusted the height of CP. The height of BF was set to 67.5mm.

==== Plan for coming weeks ====
  * Setting of the F1 in Y-front.
  * Setting of the top filter in X-front.

=== Type B (Mark) ===
==== Report for week of 7/17 ====
 * We checked the polarity of the IP LVDTs and flipped coil connections to get the standard arrangement.
 * We debugged an issue where one of the LVDT actuators had half the magnets in backwards resulting in no force.
 * We calibrated all the PI LVDTs.
 * We set the SF damper ring gap.
 * We prepped the suspension for craning, moved it into the tank and hooked the LBB damper ring rods.
 * Type A merged the SRM F0 with the correct IP, and we moved it out of the way (to the second floor behind the SRM tank).
 * We installed more cable clamps on the SR2 PI.

==== Plan for week of 7/23 ====
 * Mark, Enzo, Fabian, Kozu-kun, Terrence, Panwei at Kamioka Mon-Fri.
 * Hirata-san at Kamioka Mon-Thu.
 * Mirapro moves assembly frame ≈7/25 (Wed).

===== SR3 =====
 * Unlock suspension.
 * Rearrange cables.
 * Test.
===== SR2 =====
 * Finish PI prep.
 * Crane into AF, suspend.
 * Start cable routing.
===== SRM =====
 * Prepare to assemble SRM metal mass (most parts due Wed 7/25).
 * Help Mirapro with AF move.
 * Start rebuild of top filter of PI #2.

==== To-Do Lists, Schedule ====
 * [[KAGRA/Subgroups/VIS/TypeB/ToDoBS]]
 * [[KAGRA/Subgroups/VIS/TypeB/ToDoSR]]
 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779 Type B Schedule (SR)]]

==== Vacation Info ====
 * Hirata-san at Mitaka 7/27.
 * Terrence: 8/24-26 f2f, then returns to Hong Kong.
 * Enzo: 9/14 JPS, 9/15 through 10/8 vacation in Chile.
=== Type-Bp (Shoda) ===
==== Past week report ====
==== Plan for coming weeks ====

=== OMMT & OSTM (Ohishi) ===
==== Past week report ====
 * IMMT2 screw replacement finished (July 9th-20th).
 * Measure TF in the week after next.
 * Got a quotation of OMMT/OSTM. 
==== Plan for coming weeks ====
 * Order OMMT/OSTM mechanical parts.
=== VIS electronics (Tanaka) ===
==== Past week report ====
==== Plan for coming weeks ====

=== Other site works ===

 * July 26 11:30 - 12:30: Monthly crane inspection
 * Sept 10(Mon): Planned power outage 

=== Safety ===
 * Incidents: no incident

 * Foreseen risks
  * Type-A: Crane work
  * Type-B: Crane work, holes in the 2F

== Discussion ==
 * ETMX F2 status
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=5539|klog]]
  * F2 is stuck
  * We will leave it stuck for O3
 * Geophones or Accelerometers ?
  * We will use Geophones for ITMs too. 
  * We need to buy 6 more geophones. However the lead time can be long
 * SR2 TF optimal load problem
  * To be confirmed in the next week
 * SR cable procurement 
  * Immediately necessary: 2.4m cables for OSEMs (x2), 5 Type-1 cables
   * Sato-san will order them soon
  * We need to make more Type-1 cables by the end of September
  * We need more cable material for this
  * Takahashi-san is waiting for a quote for PTFE cable material
 * VIS talk at the F2F in Toyama U
  * We will request 2 slots
 * VIS introduction [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/Introduction|page]]
 * Survey to point out different aspects that should be covered in a introductory lecture for KAGRA. [[https://docs.google.com/document/d/1jf9jNfU-ZDP0fjNZVo6yp0S7q91V8aa7qck7Mme0hrU/edit?usp=sharing|survey]]

== Travel Plans ==
 * Travel (Week of 7/23):
  * Takahashi: 23 - 27
  * Okutomi: 
  * Sato: 23 - 27
  * Lucia: 23 - 27
  * Ishizaki:
  * Mark: 23 - 27
  * Hirata: 23 - 26
  * Enzo: 23 - 27
  * Panwei: 23 - 27 
  * Terrence: 23 - 27
  * Shoda:
  * Ohishi:
  * Fujii: 24 - 27
  * Tanioka: 
  * Tanaka:
  * Kozu (ICRR): 23 - 26
  * Arai (ICRR):
  * Eleonora: 23 - 26
  * Hashimoto: 23 - 27

 * Travel (Week of 7/30):
  * Takahashi:  
  * Okutomi: 
  * Sato: 7/30 - 8/3
  * Lucia: 7/30 - 8/3
  * Ishizaki: 
  * Mark: 7/30 - 8/3
  * Hirata: 7/30 - 8/3
  * Enzo: 7/30 - 8/3
  * Terrence: 7/30 - 8/3
  * Panwei 7/30 - 8/3
  * Shoda: 
  * Ohishi: 
  * Fujii: 7/30 - 8/3
  * Tanioka: 7/30 - 8/3
  * Tanaka:
  * Kozu (ICRR): 7/30 - 8/3
  * Arai (ICRR): 
  * Hatoya: 8/2 - 8/3

== Next meeting ==
On 2018/7/27(Fri)