=== 2018/4/28(Sat.) ===

* Remote participants by eZuce: None
* 1st day of Phase 1 operation
 * OLG by 

==== Report of work (*:responsible person) ====

 * IFO: *Izumi, Enomoto + many
  * ETMY damping filter was back to what was best. Fluctuation is ~1urad.
  * ETMX damping filter changed a bit. Fluctuation is < 1urad.
  * BS alignment noise was improved around 10-30Hz 8 at most.
  * Gain bump can be seen around UGF of MICH.
  * Lock of the last night was ~1hour. Lock was lost because of L to oplev coupling seems to exist.


 * Camera: Yokozawa, Inoue
  * IYA camera could not see BS, because some clipping may exist.

 * WAB: Akutsu
  * Heater off.

 * IYC: Tomaru
  * Cooler off.

 * Operaton:
  * [[KAGRA/Commissioning/Phase1/Operation|Operation wiki page]] is opened.

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

 * CAL: Yamamoto
  * Optical gain measurement
  * Open loot TF.
  * Amplitude tuning for injection.
  * Sensitivity.
  * BS to MICH TF, if can.

 * IFO: *Izumi, Enomoto + many
  * Higher BS oplev gain will be tried today by the gain switch on opec board or the gain setting on whitening board.


==== 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 4/23
  * Michelson control.
  * 4/28 Operation start

 * week of 4/30
  * Operation continues.

==== Issues ====