= Agenda/Minutes of the VIS Meeting on 2018/3/2 =

2018/3/2 13:30 - 15:40

Participants: Fabian, Takahashi, Aso, Tanaka, Enzo, Okutomi, Hirata, Mark, Shoda, Ishizaki

== 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]
  * Finished the cabling between the BF and F3.
  * Tuned the F3 again with hanging the F3 by crane.
  * Final optimal load was additionally 1.2kg at 0.25Hz.
  * Removed the primary coils for the BF damper.
  * Checked cable connections and repaired some disconnections.
  * Started the installation of F2. Assembled the FR in the F2.

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

[X-front]
  * Measure the transfer functions of the BF and the F3.
  * Lift down the BF into the corrugate tube.
  * Extend the EQ stop for the F2.

[X-end]
  * Vent the chamber on 5th.
  * Remove the DP on 6th.
  * Install the maraging wire for Cryo-payload with cables on 7th.

=== Type B (Mark) ===
==== Report for week of 2/26 ====
 * We routed all the cables from the BF level up via the flying saucer to the SF.
 * Hirata-san tried filing the SF cap to improve the fit, but without much success.
 * Hirata-san installed the Cu segments and cable clamps on the SF cap and the SF LVDT and FR cables.
 * We cabled and tested the BF cap picos and the SF LVDT and FR. (The LVDT still needs a full calibration.)
 * We worked on recovering the IM OSEM alignment. 

==== Plan for week of 3/5 ====
 * Shoda-san at Mitaka.
 * Hirata-san vacation Mon 3/5, then Kamioka
 * Fabian Mitaka Mon-Tue (COMSOL training), Kamioka Wed-Fri.
 * Others at Kamioka.
 * -
 * '''Remove LBB temporary ballast masses from BS chamber.'''
 * Finish recovering IM OSEM alignment.
 * Calibrate SF LVDT.
 * Lift SF/... section and check total mass and balance.
 * Get SRM tank mushroom section installed (Hirata-san, Kimura-san)
 * Set up for rebuilding of two BFs.

==== Plan for week of 3/12 ====
 * Shoda-san at Mitaka.
 * Mark at ASJ (Chiba) Fri, then Mitaka.
 * Hirata-san vacation Mon 3/5; Kamioka Tue-Thu; Mitaka Fri
 * Others Kamioka Mon-Thu
 * Install boxes in SR3 and SRM racks.
 * Lay SR3 in-air cabling.
 * Continue rebuild of BFs.

==== Plan for week of 3/19 ====
 * Mark at LVC meeting
 * All others at Mitaka
 * Make two sets of IM OSEMs
 * Make last in-air pico adapter cable
 * Make three in-air stepper splitter cables for SR2, SR3 and SRM.
 * Set up Dummy BS prism removal.

==== Plan for week of 3/26 ====
 * Mark vacation.
 * Shoda-san at Mitaka
 * Others at Kamioka
 * --
 * F0 Prototype Blade Test
  * Characterize blades.
  * Choose best set of three.
  * Remove cracked blades from filter in SRM area.
  * Set up test weights in SRM area, first floor.
  * Remove floor panel in SRM area, second floor.
  * Install chosen blades.
  * Measure load capacity.

==== 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 ====
 * Mark at LVC, then vacation, 3/18 (Sun) - 4/1 (Sun)
 * Hirata-san vacation, Mon 3/5.
 * Fabian vacation, 3/26-4/27 (then gone). 
=== Type-Bp (Shoda) ===
==== Past week report ====
 * Takahashi-san, Aso-san, Ohishi-san, and Miyo-kun checked the suspension height. But the height was not much changed. So SF weight was not changed. I checked the LVDT trend since the installation. There are some jumps after data taking errors, including blackouts. Details will be uploaded to klog later.
 * I prepared IP stepping motor med scripts. Actuation check is required.
 * PRM guardian has an error that I could not solve.
 
==== Plan for coming weeks ====

=== OMMT & OSTM (Ohishi) ===
==== Past week report ====
==== 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.)-->
      *Delivered( 5 of 6 substrates and Cables(assembled)).
      *There are two casings yet(Adjusting with vendor)
      *Operation test of the initial product is completed. And I ordered the production of the residual mass-produced products.-->Pending delivery.

==== Plan for coming weeks ====
 *Preparation for assembly of mass products.-->
      *Programming and Unit Testing(59 Items)
      *Other necessary preparations.

 *Adjustment and approval to vendors(Negotiating to guarantee machining delay of cases).

=== Other site works ===

 * 2/26 - 3/9 Construction of the walls to isolate the arms better (for cleanliness)
 ＊3/8 or 3/9 no car in the access tunnel
 * 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: no incident

 * Foreseen risks
  * Type-A: Crane work
  * Type-B: Crane work, working with springs
  * Type-Bp:

== Discussion ==

=== Center area pump down ===
==== Vacuum flange status ====
 * BS
  * Top flange: O-ring inside, but covered with mending tapes (not vacuum compatible)
  * Small service flanges in the bottom section near the top flange (2 of them): Opened once. Not tightened. Maybe no O-ring.
  * Feed through flanges: Metal gaskets inside. Not tightened.
  * A blank flange in place of a feed through flange: Maybe no O-ring. Not tightened.
 * PRM
  * Top flange: No O-ring
  * Feedthrough flanges: Metal gaskets inside. Not tightened.
 * PR2/PR3
  * Top flange: O-ring inside. Not tightened. To be tightened by Futaba in the week of Mar. 5th.
  * Feedthrough flanges: Metal gaskets inside. Not tightened.


==== Other preparations ====
 * Securing cables
  * D-sub connectors on the PR chambers are not fixed by screws
  * Type-B team has about 150 pairs of the screws
  * Type-B team will put screws for PR2 chamber in the next week
  * Need to assign someone for PR3/M

 * OpLev monitoring
  * Aso will work with Shoda to implement Guardian alert system to send notifications when OpLev is kicked.
  * PRM guardian is not running now. Aso will talk with Kokeyama and Yamamoto.
 * Drift monitoring of the suspensions during pump down
  * A strip tool should be prepared to show the drift trend
 * Wiping inside the chambers
  * PR2 and BS: Type-B team
  * PRM and PR3: Ask someone
  
=== Phase 1 operation measurements ===
 * We need to clarify:
  * Minimum success criteria for each measurement
  * Who will do the task
 * Type-A transfer function measurements
  * Main people: Okutomi, Miyamoto, Fujii(?)
  * Criteria: Okutomi will discuss with Miyamoto
 * Bs transfer function measurements
  * Main people: Mark, Enzo
  * Criteria: Mark will make a list of transfer functions to be measured

== Travel Plans ==
 * Travel (Week of 3/5):
  * Takahashi: 5-9
  * Okutomi: 5-8
  * Sato: 5-9
  * Ishizaki: 5-9
  * Mark: 5-9
  * Fabian: 7-9
  * Hirata: 6-9
  * Enzo: 5-9
  * Shoda:
  * Ohishi:
  * Fujii:
  * Tanaka:
  * Kozu (ICRR): 5-9
  * Arai (ICRR):


 * Travel (Week of 3/12):
  * Takahashi: 13 - 15
  * Okutomi: 12 - 15
  * Sato: 12 - 15
  * Ishizaki: 12 - 15
  * Mark: 12 - 15
  * Fabian: 12 - 15
  * Hirata: 12 - 15
  * Enzo: 
  * Shoda: 
  * Ohishi: 
  * Fujii: 
  * Tanaka:
  * Kozu (ICRR): 12 - 15
  * Arai (ICRR): 

== Next meeting ==
On 2018/3/9(Fri) 

VIS Meeting in Mitaka: 3/16