= Agenda/Minutes of the VIS Meeting on 2017/12/15 =

2017/12/15 15:00 - 16:10

Participants: Takahashi, Akutsu, Mark, Shoda, Fabian, Ohishi, Sato, Ishizaki,Okutomi, Arai, Hirata, Enzo, Aso


== Progress report ==
=== Schedule Chart ===
Type-A  : ([[TBD|PDF]],[[TBD|MPP]])

Type-B: ([[TBD|PDF]],[[TBD|MPP]])

 * Type-A: 
 * Type-B: 

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

[X-end]
  * Checked the ACCs with the drivers. The problem in cabling was not settled. We go to use the geophones as inertial sensors.
  * Started preparation for the geophones.
  * One geophone was assembled. The pin assignment of delivered cables was wrong.
  * Made cables for the temperature monitor.

[Y-end]
  * Tested the yaw picomoter in BF. The picomoter can work to align the cryo-payload, but the response was not smooth.
  * Tested the FR in BF. The screw shaft was jammed due to the miss operation caused by power drop of the power supply.

[Front]
  * Started the preparation for installation.
  * Arranged the items in the 2F.
  * Checked delivered EQ stops.

==== Plan for coming weeks ====
  * X-end: Install the geophones. Close the chambers.
  * Y-end: Repair the jamming of FR. Align the cryo-payload. Close the chambers.
  * X-front: Preparation.

=== Type B (Mark) ===
==== Past week report ====

 * Mark finished the OL calibration/diagonalization calculation and wrote it up as klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=3835|3835]] and [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7205| T1707205-v4]].
 * We glued the prisms and magnets on the SR2.
 * We got Miyo-kun to set up the SR2-IM pico driver and tested it and the picos that will be used in the IM.
 * We weighed the BF for the SR2.
 * Enzo put DIO cards in the IO chassis and cabled them to the coil drivers.
 * Enzo found more of the in-vacuum cables that will be needed for SR2. Only a few remain to be found.
 * Enzo and Shoda-san installed the vacuum-feedthroughs on the assembly frame and routed many of the in-air cables.
 * Hirata-san and Mark moved the PR/SR trolley system from SR3 to SR2, reconfigured the top of the assembly frame and checked the crossbar heights. (Everything was quite close to the drawing, but a few small adjustments up/down will be required.)
 * Fabian found an issue with the IM: we have two of the upper movable masses and no lower ones. Probably one of the PRs has been built with two lower masses. Unfortunately an upper mass has an extra hole in an inconvenient place and can't be used as a lower mass. Hirata-san ordered a suitable plug part from Misumi, and Fabian washed it and glued it in with EP30.
 * Fabian assembled the RM and test-assembled the IRM. (The IRM will have to be partly disassembled during installation.)
 * Shoda-san and Enzo got all the control loops working on the BS, and worked with Izumi-san to steer the beam down the Y-arm. They found the passive damping was not working very well, even after correcting a 1.5 mm height error in F0. We may need to lower the damper ring.
 * Shoda-san created a BS Guardian.
 * We got Yamamoto-san to connect up the SR2 rack and create an SR2 real-time model.

==== Plan for week of 12/18 ====
 * Shoda-san vacation
 * Mark, Fabian, Enzo, Kozu-kun at Kamioka Mon-Wed.
 * Find plumb bob.
 * Assembly frame alignment and optical table centering. (Mark and Hirata)
 * Finish IM assembly and pico test. (Fabian and Enzo)
 * Do inventory of ballast masses. (Fabian)

==== Plan for week of 12/25 ====
 * Mark, Fabian vacation
 * Enzo vacation, then Wed-Thu at Mitaka
 * Shoda-san, Kozu-kun, Hirata-san at Kamioka Mon-Thu.
 * Install IM ring interface blocks and IM ring.
 * Install new jack receptacles (in SR3 area, second floor) on load gauge adapter (SR2 area, second floor). (Hirata-san)
 * OL setup.

==== Plan for week of 1/9 ====
 * Mark, Fabian, Enzo, Hirata-san, Shoda-san at Kamioka Tue-Fri.
 * Hang SR and RM.

=== Type-Bp (Shoda) ===
==== Past week report ====
==== Plan for coming weeks ====

=== OMMT & OSTM (Ohishi) ===
==== Past week report ====
==== Plan for coming weeks ====

=== Watchdog system (Tanaka) ===
==== Past week report ====
   *Plan the operation test again at KAGRA-->
          *DC power problem. —>Solved.(AC GND is different at KAGRA and Mitaka.)

          * Actual test of WD operation(Retest).—>Succeed.
               *Coil driver out —> WDS operated.
               *Real oscillation of IM2 . —>Real signal of the OSEM detected, and WDS operated.
    
    * Layout plan of this physical year(2017)checked.—> 
         * Short type(about 1 - 2 m) of DC cable(For 18V) needs 16 cables.
         *Need machine time —> WDS operating levels are decisioned by real experiments.
   

==== Plan for coming weeks ====
  
   *Start ordering mass production version.-->Ongoing(Formal request for quotation from the vendors). 
	  *Waiting for arrival of mailing(by paper quotation).
          *Start other ordering.

=== Other site works ===

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

 * Foreseen risks
  * Type-A: crane work
  * Type-B: crane work, work at height

== Discussion ==

== Travel Plans ==
 * Travel (Week of 12/18):
  * Takahashi: 18 - 22
  * Okutomi: 18 - 22
  * Sato:18 - 22
  * Ishizaki: 18 - 22
  * Mark: 18 - 20
  * Fabian: 18 -20
  * Hirata: 18 -20
  * Enzo: 18 -20
  * Shoda: 22
  * Ohishi:
  * Fujii:
  * Tanaka:
  * Kozu (ICRR): 18 - 20
  * Arai (ICRR): 


 * Travel (Week of 12/25):
  * Takahashi: 25 - 28
  * Okutomi: 25 - 28
  * Sato: 
  * Ishizaki: 
  * Mark: 
  * Fabian: 
  * Hirata: 25 - 27
  * Enzo: 
  * Shoda: 25 - 28
  * Ohishi: 
  * Fujii:
  * Tanaka:
  * Kozu (ICRR): 25 - 28
  * Arai (ICRR): 25 - 28

== Next meeting ==
On 2017/12/22(Fri)