= Agenda/Minutes of the VIS Meeting on 2017/12/1 =

2017/12/1 13:30 - 14:40

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

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

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

 * Type-A: 1 week delay
 * Type-B: Waiting for the schedule

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

[X-end]
  * Checked the ACCs with the drivers.

[Y-end]
  * Replaced the blades for FR in the BF.
  * Pre-assemled the maraging wire for the cryo-payload with the junction box.
  * Inserted the wire from the cryostat.
  * Hooked the wire on the BF.
  * Installed the cryo-payload into the cryostst.
  * Suspended the cryo-payload from the BF.
  * Tuned the BF and the F3.
  * Applied the cabling between the BF and the cryo-payload.

==== Plan for coming weeks ====
  * X-end: Installation of the pre-isolaotor and reassembly of the BF damper.
  * Y-end: Align the cryo-payload by the FR and the picomotor in the BF.

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

 * We brought the SR2 optic into the tunnel and moved it into the good mirror box. The spare mirror was moved into the not-so-good mirror box.  
 * Enzo assembled the SR2 rack and laid all the long cables from the rack into the cleanbooth. (Hayakawa-san can now proceed with the rebuilding of the changing cleanbooth.)
 * Mark and Shoda-san took data for calibrating and diagonalizing the OL. (Due to the odd angle of the first steering mirror, the beam pattern is rotated by 62° at the QPD.)
 * Enzo found nearly all in-vacuum cables.
 * Enzo and Shoda-san got several more loops closed on the BS.
 * Mark found three geophone pods and two feedthrough adapters for SR2 (now have 3 FAs but need 4).
 * Mark took out S-numbers for anonymous boxes in the SR2 and put yellow stickers supplied by Tomura-san on them.
 * Hirata-san worked on SR procurement.
 * Hirata-san worked with Mirapro to get the SRM LBB installed in the tank.
 
==== Plan for week of 12/4 ====
 * Mark at Kamioka.
 * Fabian at f2f satellite meeting Mon, then Kamioka.
 * Enzo at f2f then Mitaka.
 * Hirata-san at Kamioka Mon-Thu, Mitaka Fri.
 * Kozu-kun Thu only.
 * Mirror gluing.
 * IM assembly and pico test.

==== Plan for week of 12/11 ====
 * Mark, Fabian, Enzo, Hirata-san, Shoda-san at Kamioka.
 * Kozu-kun Mon-Thu only.
 * Assembly frame alignment and optical table centering.
 * Move trolley system from SR3.
 * OL setup.

==== Plan for week of 12/18 ====
 * Shoda-san vacation
 * Mark, Fabian, Enzo, Kozu-kun at Kamioka Mon-Wed.

==== Vacation Info ====
 * Mark 12/22-1/3
 * Enzo TBD, probably 12/22-1/3
 * Fabian 12/22-1/5
 * Hirata-san 12/21-22 (conference)
 * Shoda-san 12/18-21

=== Type-Bp (Shoda) ===
==== Past week report ====
 * PRM inner frame fixed
  * We found the fixing on the vacuum tank legs are not perfect.
  * Mirapro people jacked up the inner frame to insert the sims. And fixed the inner frame. (The vacuum tank was not fixed.) The floor level is not nice.
  * Inner frame is now leveled and removed the sims on the Traverser stages.
 * PRM released
  * The suspension was released. As far as looking at the spectra, the suspension is not touching.
  * The transfer functions should be checked.
 * PR3 again largely tilted
  * OSEM DC position change is again required.

==== Plan for coming weeks ====
 * F2F
 * Asked Ohishi-san to work on the adjustment of the OSEMs.

=== OMMT & OSTM (Ohishi) ===
==== Past week report ====
 * Checked in-vac cable number. 
   Possible change of mirror actuator from coil to OSEM, makes the number of cables increase than expected.
 * Received quotation from FCL. Need to fix some minor problems.
==== Plan for coming weeks ====
 * Resume evaluation of OSEMs.
=== Watchdog system (Tanaka) ===
==== Past week report ====
 *Retest in Mitaka.-->There is no problem in operation test at all.
 *Continuous operation test(Over 100 hours).-->
   *Temperature rise.-->No problem.
   *WD operation.-->No problem.
 
 *Start ordering mass production version.-->Ongoing(Formal request for quotation from the vendors.).

==== Plan for coming weeks ====
 *Plan the operation test again at KAGRA-->
   *Actual test of WD operation(Retest).
   * The next on site test of the WDS:  From 12/12(Tue) - 14(Thu)

=== Other site works ===


=== Safety ===
 * Incidents: Dropped the BF cap by 1 cm when opening it (Type-A, Y-End)

 * Foreseen risks
  * Type-A: Crane work
  * Type-B: Crane work
  * Type-Bp: No heavy work

== Discussion ==

=== 2nd Brainstorming on how to exchange the payload part without completely disassembling the suspension chain ===
 * Postponed to the next week

== Travel Plans ==
 * Travel (Week of 12/4):
  * Takahashi: 4 - 8
  * Okutomi: 4 - 8
  * Sato: 4 - 8
  * Ishizaki: 4 - 7
  * Mark: 4 - 8
  * Fabian: 5 - 8
  * Hirata: 4 - 7
  * Enzo:
  * Shoda:
  * Ohishi:
  * Fujii:
  * Tanaka:
  * Kozu (ICRR): 7
  * Arai (ICRR):


 * Travel (Week of 12/11):
  * Takahashi: 11-15
  * Okutomi: 11-15
  * Sato: 11-15
  * Ishizaki: 11-15
  * Mark: 11-15
  * Fabian: 11-15
  * Hirata: 11-15
  * Enzo: 11-15
  * Shoda: 11-15
  * Ohishi: 
  * Fujii:
  * Tanaka: 12-14
  * Kozu (ICRR): 11-13
  * Arai (ICRR): 

== Next meeting ==
On 2017/12/8(Fri)