= Agenda/Minutes of the VIS Meeting on 2018/2/16 =

2018/2/23 13:30 - 

Participants:

== 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 ====

[X-front]
  * Attached the additional FR blade to the BF.
  * Needed some try and errors due to some problems (low Q, FR range, height of blade).
  * Tuned the BF again. Optimal load was 197.1kg at 0.31Hz. The FR range was 7.5mm.
  * Closed the cap of BF.
  * Extended the EQ stop to the F3 stage.
  * Lifted down the DP into the corrugate tube.
  * Set the F3 onto the end plate. maraging wire was hooked to the receptacles.
  * Tuned the F3 to 0.31Hz initially.
  * The optimal load was changed by closing the cap and hunging the F3.
  * Finally the frequency was 0.27Hz reducing the weight by 0.4kg.
  * Checked the range of FR in F3. It was 13.5mm.
  * Calibrated the LVDT in F3.
  * Started cabling between the BF and the F3.

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

[Next week]
  * Finish the cabling between the BF and the F3.
  * Lift down the BF into the corrugate tube.
  * Go to the F2 stage.

[Week of March 5]
  * Vent the EXV chamber on 5th.
  * Remove the IXV DP on 6th.
  * Insert the maraging wire for Cryo-payload with cables.

=== Type B (Mark) ===
==== Report for week of 2/19 ====
 * We did TFs from the IM OSEMs.
 * We secured the cables inside the BF, added the cap and anchored the cables from below the BF to the cap.
 * We lifted the BF/... section with the load gauge adapter and measured the weight, which was about as expected.
 * Based on the measured weight, Fabian prepared an 800 g set of masses for the top of the BF.
 * We added the AF crossbars and the section of the SS below the SF and craned in the SF.
 * We installed the SF-BF rod and flying saucer and suspended the BF/... section. With the 800 g placed temporarily on the BF, the SF keystone floated at about mid-range.

==== Plan for week of 2/26 ====
 * Shoda-san at Mitaka.
 * -
 * Enzo at Mitaka Mon 2/26.
 * '''Remove LBB temporary ballast masses from BS chamber.'''
 * Route cables up to under SF.
 * Check/adjust total mass and balance of BF/... section, especially IM OSEMs. 
 * Cable and calibrate SF LVDT.
 * Add Cu segments to SF cap.
 * Install cap.
 * Lift SF/... section and check total mass and balance.

==== Plan for week of 3/5 ====
 * Shoda-san at Mitaka.
 * Hirata-san vacation Mon 3/5, then Kamioka
 * Others at Kamioka.
 * -
 * Get SRM tank mushroom section installed (Hirata-san, Kimura-san)
 * SR3 rack setup.
 * Other tasks TBD.

==== Plan for week of 3/12 ====
 * Shoda-san at Mitaka.
 * Mark at ASJ (Chiba) Fri 3/16.
 * Hirata-san vacation Mon 3/5, then Kamioka

==== Plan for week of 3/19 ====
 * Mark at LVC meeting
 * Shoda-san, Fabian at Mitaka

==== Plan for week of 3/26 ====
 * Mark vacation.
 * Others ???

==== To-Do Lists, Schedule ====
 * [[KAGRA/Subgroups/VIS/TypeB/March2018]]
 * [[KAGRA/Subgroups/VIS/TypeB/April2018]]
 * [[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-v1 Type B Schedule (SR)]]

==== Vacation Info ====
 * Enzo Mitaka day 2/26
 * Hirata-san vacation 3/5
 * Hirata-san vacation Mon 3/5
 * Fabian 3/26-4/27 vacation (then gone). 
=== Type-Bp (Shoda) ===
==== Past week report ====
==== Plan for coming weeks ====

=== OMMT & OSTM (Ohishi) ===
==== Past week report ====
 *OSEM test
 *Removed a magnet from OSEM and measured response.
  It seemed that PD or LED inside OSEM has weak magnetic feature.
==== Plan for coming weeks ====

=== Watchdog system (Tanaka) ===
==== Past week report ====
 *Preparation for assembly of mass products.-->Ongoing.

 *Adjustment and approval to vendors(Implementation adjustments and approvals for circuit boards.)-->
     *There is no delivery.-->Contacting the vendor.

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

 *Preparation for assembly of mass products.

 *Adjustment and approval to vendors(Implementation adjustments and approvals for circuit boards.)

=== Other site works ===

 * 2/26 - 3/9 Construction of the walls to isolate the arms better (for cleanliness)
 * 3/12 - 3/16 Installation of the control systems for the large GVs
 * 3/12 - Center area: preparation for pump down: connecting ducts.

=== Safety ===
 * Incidents:

 * Foreseen risks
  * Type-A: 
  * Type-B:
  * Type-Bp:

== Discussion ==
 * Center area pump down
 * PR2/3 height adjustment

== Travel Plans ==
 * Travel (Week of 2/26):
  * Takahashi: 26 -2 
  * Okutomi: 26 -2
  * Sato: 26 -1
  * Ishizaki: 26 -1
  * Mark: 26 -2
  * Fabian: 26 -2
  * Hirata:26 -2
  * Enzo:27 -2
  * Shoda:
  * Ohishi:
  * Fujii:
  * Tanaka:
  * Kozu (ICRR): 26 -2
  * Arai (ICRR):


 * Travel (Week of 3/5):
  * Takahashi: 5 - 9
  * Okutomi: 5 - 9
  * Sato: 5 - 9
  * Ishizaki: 5 - 9
  * Mark: 5 - 9
  * Fabian: 5 - 9
  * Hirata: 6 - 9
  * Enzo: 5 - 9
  * Shoda: 
  * Ohishi: 
  * Fujii:
  * Tanaka:
  * Kozu (ICRR): 5 - 9
  * Arai (ICRR): 

== Next meeting ==
On 2018/3/2(Fri) 

VIS Meeting in Mitaka: 3/16