=== 2019/5/7(Tue.) ===

==== Schedule ====
 * Center
  * --(4/12: Pump down)--
  * --(4/29,30: Leak check)--
  * 5/2: Vent and pumpdown
  * 5/9: leak check 

 * ITMX: 
  * --(4/10: Cooling starts.)--

 * Xend
  * --(4/25: Pumpdown)--
  * --(5/2: leak check)--
  * --(5/2: Cooling start)--

 * Yend
  * --(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 ====
 * Y arm commissioning, from the control room.

==== Weekend ====

==== Report of work ====
 * IR laser frequency was too noisy for mass feedback lock.
  * Frequency is stabilized by X arm cavity, and Y arm will be locked to stabilized laser.

 * Beam spot on ITMY was too high.
  * Needs BS camera.
  * Height of ITMX and ITMY will be measured by Suzuki-san.

==== Work plan ====