=== 2018/4/20(Fri.) ===

* Remote participants by eZuce: None

==== Report of work (*:responsible person) ====
 * Phase 1 operation was postponed to 4/28 start and 5/6 end.

 * VAC: *Kimura
  * Leak was caused wrong positioned O-ring. The shape of O-ring was deformed.
  * Pump down started 15:50 yesterday.
  * Now vacuum gage shows ~30Pa.

 * VAC: *Inoue, Yokozawa
  * Vacuum monitor is ready! except for Y arm monitor.

 * ETMX: *Hasegawa
  * 0.07Hz was damped well!
  * Yaw and pitch are < 1urad.

 * ETMY: *Nakano, Shishido
  * Pitch and yaw reached 1urad! Internal mode of payload of 1.6Hz dropped down somehow.
  * Possibility of heat link for 1.6Hz still remains.
  * Beam at REFL seemed to be OK.

 * BS: *Eleonora, Izumi
  * Implementation of L2P filter worked well and they are well decoupled now!
  * Global injection point for length control is ready.



==== Work plan (*:responsible person) ====

 * IFO, ETMs, BS: Enomoto, Nakano, Izumi, Hasegawa, Shishido, Eleonora
  * Damping, BS L2P, restoring alignment.

 * VAC: *Kimura
  * Leak test will be performed and the gate valve will open on weekend if no problem.

 * Camera: *Inoue, Yokozawa
  * Tcam of Y end will be ready today.


 * We will have mine works for DMG(*Yamamoto) and leak test(*Kimura, Uchiyama, Saito) at ETMX on Saturday and Sunday.
  * DMG needs some maintenance for DAQ.



==== Laser hazard ====
 * [AM]
  * IR: Upstream SR2-3 line, Xend 1F, Yend 1F
  * Green: PR2, Xend 1F
 * [PM]
  * IR: Upstream SR2-3 line, Xend 1F, Yend 1F
  * Green: PR2, Xend 1F

 * [night]
  * IR: Upstream SR2-3 line, Xend 1F, Yend 1F
  * Green: PR2, Xend 1F


==== Weekly ====

 * week of 4/16
  * Michelson control.
  * Leak check, and fix leaks.
  * Opening the last gate valve weekend.

 * week of 4/23
  * Michelson control.
  * 4/28 Operation start

==== Issues ====