= Agenda/Minutes of the VIS Meeting on 2018/1/12 =

2018/1/12 13:30 - 14:30

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


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

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


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

[X-end]
  * Replaced the vacuum gauge.
  * Connected the PT100 sensor to the monitor.
  * Fastened the top chamber and the hatch on the cross tube. 
  * Started evacuation of EXV chamber on the 28th in Dec. The present pressure is 78Pa.
  * Transported the items to the center room (footholds, workbench, chain bolocks, tools, etc.)

[Y-end]
  * Transported the dummy payload to the center room.

[X-front]
  * Lifted up the items from the X/Y-end.

==== Plan for coming weeks ====
  * The evacuation of EYV chamber will be started in the 19th morning.
  * Prepare to start assembly of DF in the clean booth.
  * The short rod for DP is missing.
  * The assembly of pre-isolaor for SRM is planed.

=== Type B (Mark) ===
==== Report for week of 12/25 ====
 * Hirata-san got the L-brackets machined and washed, and installed them on the IM ring bars.
 * Shoda-san recovered the BS from the power outage on 12/25. 
 * Miyakawa-san fixed an issue with the SR2 RTM which had prevented it from running.
 * Shoda-san, Hirata-san and Kozu-kun cleaned the assembly frame and installed new jack receptacles on the load gauge adapter.
 * They weighed the IM without ballast masses, and then added the lower masses and installed the IM on the assembly frame.
 * They installed the winch system on the IM, and inspected the clamp pieces for possible scratches.
 * They ran cables for the SR2 steppers and OSEMs.
 * They calibrated the BF LVDT.

==== Report for week of 1/4 ====
 * Mark fixed a number of errors with the Type B screens.

==== Report for week of 1/9 ====
 * We weighed the mirror in its box (and later the empty box), and the RM.
 * Fabian worked on the SR2/SR3/SRM mass budget and did an inventory of spare ballast masses.
 * We hung the SR2 and RM.
 * We assembled the bottom section of the security structure below the RM.
 * We cabled the RM OSEMs up to the IM.
 * Hirata-san gave up on waiting for a third quote for the blades and blade parts and started the ordering process.
 * Hirata-san got rod cable clamp parts from Takahashi-san and worked on drawings for the improved BS vertical and yaw adjusters. 

==== Plan for week of 1/15 ====
 * Fabian at Mitaka Monday 1/15 to inspect filter load test items.
 * All at Kamioka.
 * Shoda-san to work on making OSEMs - Enzo and Kozu-kun to help and learn.
 * Test RM OSEMs.
  * Check coil driver is successfully driving current.
  * Time permitting, do TF test from coils to OL pitch and yaw.
 * Suspend IM using load gauge adapter, and check/adjust total mass and balance.

==== Plan for week of 1/22 ====
 * All at Kamioka
 * Bring in BF and suspend IM.
 * Route final RM/IM cables up to below BF.
 * Recheck/adjust total mass and balance.
 * Route selected cables to flange.
 * Test IM picos and BF yaw pico.

==== Plan for week of 1/29 ====
 * Enzo at Mitaka 1/29 and most of 1/30, then vacation.
 * Kozu-kun away.
 * All others at Kamioka.
 * Build IRM around IM.
 * Cable/test/adjust IM OSEMs.
 * Time permitting, do TFs from IM OSEMs to themselves and to optical sensor.

==== Vacation Info ====
 * Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30)
 * Kozu-kun 1/29-2/2

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

=== OMMT & OSTM (Ohishi) ===
==== Past week report ====
 * Talked with Miyakawa-san about digital system for OMMT/OSTM.
  He will prepare the rack around this spring.
 * Prepared Al stand for OSEM test.
  I found that coil wire of a sample OSEM was broken.
 * Ordered non-magnetic screws for Intermediate Mass.
  Nabeya Bi-tech Kaisha(NBK) recommend material Ti-6Al-4V.
==== Plan for coming weeks ====
 * Aso-san will send remaining (about 40?) OSEMs from Mitaka.
 * Some parts for hanging jig ordered last year will arrive.
 * 
=== Watchdog system (Tanaka) ===
==== Past week report ====
  *Order request has been completed(To order the University of Tokyo).--> Delivery completed. And Digikey's parts delivery completed.

  *Start other ordering.-->Meeting due to order change procedure to vendor.

==== Plan for coming weeks ====
  *Start ordering sequentially for mass products..-->But some adjustment works are necessary.

  *Preparation for assembly of mass products.

=== Other site works ===
 * Parking space

=== Safety ===
 * Incidents: 
  * Touched a mirror suspension wire during assembly
  * Bumped the back of VOXY

 * Foreseen risks
  * Type-A: Crane work
  * Type-B: Crane work


== Discussion ==
 * Commissioning support
  * Okutomi-kun will available during the initial pump down
  * Some of the Type-A members will always be in Kamioka. They can operate motors for alignment adjustment.

 * Lab. temperature
  * We want to have the same temperature during the assembly and observation
  * The current temperature (21 deg. ?) is comfortable.

== Travel Plans ==
 * Travel (Week of 1/15):
  * Takahashi: 15 - 19
  * Okutomi: 15 - 20
  * Sato:15 - 19
  * Ishizaki:15 - 19
  * Mark: 15 - 19
  * Fabian: 16 - 19
  * Hirata: 15 - 19
  * Enzo: 15 - 19
  * Shoda: 15 - 18
  * Ohishi:
  * Fujii:
  * Tanaka:
  * Kozu (ICRR): 15 - 19
  * Arai (ICRR): 15 - 19


 * Travel (Week of 1/22):
  * Takahashi: 22 - 26
  * Okutomi: 21 - 26
  * Sato: 22 - 26
  * Ishizaki: 22 - 26
  * Mark: 22 - 26
  * Fabian: 22 - 26
  * Hirata: 22 - 26
  * Enzo: 22 - 26
  * Shoda: 22 - 26
  * Ohishi: 
  * Fujii:
  * Tanaka:
  * Kozu (ICRR): 22 - 26
  * Arai (ICRR): 22 - 26

== Next meeting ==
On 2018/1/19(Fri)