=== 2019/4/23(Tue.) ===

==== Schedule ====
 * Center
  * --(3/25: Venting)--
  * --(3/27-4/9: Fixing PR2 or others)--
   * --(4/4 -4/5: Gluing)--
   * --(4/8: alignment check)--
   * --(4/8-10: OSEM adjustment)--
  * --(4/10: alignment check)--
  * --(4/11: VIS final health check)--
  * --(4/11-12: Closing)--
  * --(4/12: Pump down)--
  * 4/29,30: Leak check

 * ITMX: 
  * --(3/19: Cooling stop)--
  * --(3/25: Venting start)--
  * --(3/27: Opning chamber)--
  * --(3/27~: Fixing thermal touch)--
  * --(4/2~: closing chamber and start pumping down)--
  * --(4/10: Cooling starts.)--

 * Xend
  * --(3/25: closing and pump down)--
  * --(4/8: Leak check)--
  * --(4/9-10: venting)--
  * --(4/11: Exchange a broken LED for Photo sensor)--
  * --(4/12: closing chamber and start pumping down)--
  * --(4/22: Leak check)--
  * --(4/22: vent)-
  * 4/24: fix oplev mirror
  * 4/25: Pumpdown
  * 5/2: leak check
  * 5/2: Cooling start

 * Yend
  * --(3/26: Venting start)--
  * --(3/28~: Fixing short inside chamber)--
  * --(4/3: Fixing F0 actuator)--
  * --(4/4~: closing chamber and start pumping down.)--
  * --(4/10: Cooling starts.)--

 * April: Measurement of TF, payload diagonalization on ITMX
 * End of April~: DRMI commissioning
 * End of April~: Y arm commissioning
 * ~End of May: FPMI commissioning

==== Note ====
 * 

==== Night work ====
 * 

==== Weekend ====
 * 

==== Report of work ====
 * COM: Coil of H2 on IM of ITMY seemed not to work.
  * Type A: Cable of ETMX is something wrong, it will be checked by Lucia and Okutomi-kun.
 * VAC: ETMX is back to atmosphere now.
  * The door will be opened today.
  * Oplev mirror will be fixed tomorrow.
 * Type B: working Guardian.
 * ITMX: Testing new version inertial damping.

==== Work plan ====
 * Maintenance is planed tomorrow.
  * Replacing k1als0 and other PC.
  * Replacing HDD of k1nfs0. It takes 10-20min but all desktop will be stopped.