= Agenda/Minutes of the VIS Meeting on 2018/9/21 =

2018/9/21 13:30 - 14:50

[[https://zoom.us/j/203743987|Zoom Meeting]]

Participants:Mark, Fabian, Kozu, Aso, Ohishi, Panwei, Hirata, Tanaka, Takahashi, Sato

== 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]
  * Opened the BF cup to check the status of FR.
  * Found the deformed bracket to fix the FR blade onto the keystone.
  * The keystone dropped to the lower limit due to the deformation.
  * The FR tried to pull up the keystone, but the FR could not pull even though the slider reached at the upper limit.
  * The slider was tilted and stacked by the asymmetry of dual blades due to the deformation.

[X-end]
  * Unhooked the wires from the receptacles.
  * Disconnected the in-vacuum cables from the feedthroughs.
  * Dismounted the PI from the top chamber.
  * Replaced the actuator coil for TF.
  * Mounted the PI onto the top chamber.
  * Hooked the wires to the receptacles.
  * Connected the in-vacuum cables to the feedthroughs.
  * Adjusted the height of BF.
  * Calibrated the LVDT for TF.

==== Plan for coming weeks ====
[Y-front]
  * Test of the yaw FR for the TF.

[Y-end]
  * Assembly of the geophone pods and installation.

[X-front]
  * Procurement of parts for the BF FR.

[X-end]
  * Closing of the chambers completely for the evacuation.

=== Type B (Mark) ===
==== Report for week of 9/17 ====
 * Monday 9/17 was holiday.
 * We optimized the trim mass on the SF to get more balance torque with less total mass. We now have a reserve of 480 g for the yaw pico.
 * We set the SF damper gap to 6 mm.
 * We set the SR2 pitch with the optic lever, aligned the IRM, and set all the OSEMs to have good clearance and midrange output.
 * We locked the SR2 suspension, craned it into the tank and hooked the LBB damper rings (but not the LBB yet).
 * With help from Ohishi-san, we removed the First Contact from SR2.
 * Mark did an audit of all the electronics boxes and updated the item list and S-number file cards on JGWDoc.
 * Mark added some thin arc weights to the inventory and finalized the number of various types to order (8*38 mm + 9*10 mm).
 * Panwei copied control filters over from the SR3.
 
==== Plan for week of 9/24 ====
 * Monday 9/24 is holiday (Autumn Equinox).
 * Mark, Hirata-san, Fabian, Panwei at Kamioka Tue-Fri.
===== SR2 =====
 * Move SR2 in-air cables.
 * Unlock and realign suspension.
===== SRM =====
 * Set pitch of SRM and RM, tighten clamps, remove winch system.
 * Weigh IM/... section.
 * Build up SS to BF level.
 * Add BF.
 * Suspend IM and tweak height/balance.

==== Plan for week of 10/1 ====
 * Mark, Hirata-san, Fabian, Panwei at Kamioka Mon-Fri.
===== SRM =====
 * Cable/test BF.
 * Install IRM.
 * Install/cable/test IM OSEMs.

==== Plan for week of 10/8 ====
 * Monday 10/8 is Sports Day.
 * Enzo returns Tuesday 10/9.
 * Mark and Terrence (plus TBD) at Kamioka Mon-Fri.
 * Enzo, Hirata-san, Fabian and Panwei at Kamioka Tue-Fri.
===== SR2/SR3 =====
 * Terrence to set up LEN half of SR3 OL and, time permitting, TILT and LEN for SR2.
===== SRM =====
 * Continue installation.

==== To-Do Lists, Schedule ====
 * [[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 Type B Schedule (SR)]]

==== Vacation/Visitor Info ====
 * Enzo: 9/15 through 10/8 vacation in Chile.
 * Terrence: 10/8-12, 10/29-11/2 at Kamioka.

=== Type-Bp (Shoda) ===
==== Past week report ====
 * The orientation of the PRM mirror was adjusted to reflect the input beam back to the IFI
 * As a result, the IM OSEM went out of the range
 * We also found that the BF keystone was sitting on the EQ stop
 * We lifted the BF keystone with the fishing rod
 * Then we adjusted the OSEM positions, by entering the chamber, to get them back to the working range.
 * Now the PRM is in a good alignment state. 
 * The transfer function measurement shows it is healthy.
 * Related klog entries [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=6192|6192]] [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=6215|6215]]


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

=== OMMT & OSTM (Ohishi) ===
==== Past week report ====
 *Made a [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9013|Schedule]]
==== Plan for coming weeks ====

=== VIS electronics (Tanaka) ===
==== Past week report ====
 *JGW-S1403045 Assembled Chassis of the KAGRA LVDT Driver
  *Received to MTK(NAOJ) for Repair 2018/09/18
  *I had identified a broken board. And S1403073 removed.
  *Returned to Kamioka(Mozumi) 2018/09/19.
  *Waiting for parts(for repair) order and arrival for S1403073.

==== Plan for coming weeks ====
 *I'll take a summer vacation.

=== Other site works ===

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

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

== Discussion ==
 * LVDT driver tally again

== Travel Plans ==
 * Travel (Week of 9/24):
  * Takahashi: 26-28
  * Okutomi:
  * Sato: 25-28
  * Lucia: 25-28
  * Fabian: 25-28
  * Mark: 25-28
  * Hirata: 25-28
  * Enzo:
  * Shoda:
  * Ohishi:
  * Fujii: 25-28
  * Tanioka:
  * Tanaka:
  * Kozu (ICRR):
  * Arai (ICRR):

 * Travel (Week of 10/1):
  * Takahashi: 1-5
  * Okutomi:
  * Sato: 1-5
  * Lucia: 1-5
  * Fabian: 1-5
  * Mark: 1-5
  * Hirata: 1-5
  * Enzo:
  * Shoda:
  * Ohishi:
  * Fujii: 2-5
  * Tanioka:
  * Tanaka:
  * Kozu (ICRR):
  * Arai (ICRR):

== Next meeting ==
On 2018/9/28(Fri)