= Agenda/Minutes of the VIS Meeting on 2016/10/28 =

2016/10/28 13:30 - @Mitaka F2F.

Participants: Takahashi, Mark, Sato, Tanaka, Okutomi, Ishizaki, Aso, Enzo, Hirata, Akutsu, Shoda, Fujii, Raffaele


== Progress report ==
Schedule Chart ([[https://www.dropbox.com/s/2q2elzj6s4lep6r/VIS%20Overall%20Schedule-20161014.pdf?dl=0|PDF]],[[https://www.dropbox.com/s/kwo9bxfb2711jkx/VIS%20Overall%20Schedule-20161014.mpp?dl=0|MPP]]) '''To Be Updated'''

=== Type-A (Takahashi) ===
 * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/TypeA/Meeting|Minutes of Type-A Meeting]]
 * Pre-isolator: The top filter was mounted onto the IP. The shaft screw of motor was not matching to the slider for fishing rod. New shafts were ordered.
 * EQ stop, release sensor, dummy payload: Production is on going.
 * BF damper: Open bidding is on 9th November.
 * Maraging wire: Hirata-san made 2D drawings. The wires will be ordered soon. 
  * Asking CRY to check the rod design for suspending the cryogenic payload. Set a deadline for the answer (Takahashi)
 * Installation: Making assembly drawings for the installation procedure document. The review is held on 4th November.

=== Type B (Mark) ===
 * Type B Past Week Summary
  * Fabian, Mark and Liu-kun did BS installation at Kamioka:
   * Debugged the issue with the BF keystone being tilted enough to cause rubbing on the yoke for the magnets. It was solved by moving the yoke ≈1 mm taking advantage of the oversized holes.
   * Measured the height of the payload as a function of trim mass. The BF spring seems to have a slightly lower load capacity and a rather higher spring constant than when it was remeasured by Hirata-san.
    * Now the resonant frequency is around 0.6 Hz as opposed to the 0.4 Hz when it was tuned.
    * Continue the test hanging with this configuration, but check if 0.6 Hz is OK or not from the viewpoint of the vibration isolation performance with simulation.
    * Hirata-san will come to Kamioka from Nov. 7 to 11 to check the BF.
   * Removed IM trim mass to set the average height of the keystone to the CAD value.
   * Moved IM trim mass around to set the pitch of the dummy BS and the roll of the IM.
   * Constructed the rest of the IRM around the IM.
  * Hirata-san
   * Prepared to get quotes for different types of "flying saucer" cable clamps (D1504530, D1605625, D1605734).
   * Finished BS assembly drawings (in-tank version) and sent to Saito-sensei).
   * Finished maraging rod 3D models and drawings (for Type A)
   * Modified top plate drawings for PRM inner frame.
 
=== Type-Bp (Shoda) ===
 * BFRM
  * Still waiting for ordering process.

 * Stab Flags
  * Waiting for the cost estimation.

 * Assembly frame
  * Asking cost estimate. Also asking to upgrade the assembly frame in the end of November.

 * Install procedure
  * pictures how to install whole suspension chain into the chamber is circulated.
   We will ask the company about the accerelation of the crane, the chain block, and the lever block.
   According to their information, we will buy a chain block or a lever block and test them at Mitaka.

 * Flag removing jig.
  * The model is made by Shoda and approved by Hirose-san. Now the 2D drawing is being made.

 * Disassembly of PR3
  * To be done from Nov. 8 to 11. Enzo and Kasuya-san will join.

=== IMMT (Ohishi) ===
 * Put a report here

=== Watchdog system (Tanaka) ===
 *Conference material PCB Design Draft version.(Oct 21th 2016)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0057/E1605760/001/Project_WDS_PCB_Design_Ver_0th-161021.pdf|PDF]]
 *Design and preparation(investigation of procurement) for production.[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0057/E1605791/002/Project_WDS_H_W_Assignment_Design_Ver0_1-20161028-1.pdf|PDF]]
 * Will show the design at the next AEL meeting.

=== Safety ===
 * No issue

== Discussion ==

 * Suspension naming convention (Okutomi)
  * We decided on the following convention
{{{
Type-A:
F0 - F1 - F2 - F3 - BF - PF - (MN) - IM - OP
Type-B:
F0 - F1 - BF - IM - OP
Type-Bp:
F1 - BF - IM - OP

}}}

 * Type-Bp installation tool: Lever block or Chain block (Shoda)
  * Will contact manufacturers of those tools if they have data on the operation shocks.

== Site work plan for the next week ==
 * Mon: 
 * Tue: 
 * Wed: 
 * Thu: 
 * Fri: 

== Travel Plans ==
 * Travel (Week of 10/31):
  * Takahashi: 
  * Shoda: 
  * Mark: 
  * Fabian: 
  * Okutomi: 
  * Fujii:
  * Ishizaki:
  * Hirata:
  * Sato: 
  * Ohishi:

 * Travel (Week of 11/7):
  * Takahashi: 7-9 (Extended chief meeting/Fire drill/Accelerometer test)
  * Shoda: 7-11 (Extended chief meeting/Fire drill/PR3 disassemble)
  * Mark: 8 - 11 (Fire drill/BS)
  * Fabian: 
  * Okutomi: 7 - 11 (Extended chief meeting/Fire drill/Accelerometer test/Realtime code)
  * Fujii: ? (Fire drill)
  * Ishizaki:   
  * Hirata: 8 - 11 (Fire drill/BS)
  * Sato: 7-9 (Fire drill/Accelerometer test)
  * Enzo: 8-11 (PR3 disassembly)
  * Ohishi:


== Next meeting ==
On 2016/11/4(Fri)

VIS F2F: Nov. 18, Dec. 2