=== 2019/5/13(Mon.) ===

==== Schedule ====
 * 5/20-24: Exchanging cryo valves.

 * Center
  * --(4/12: Pump down)--
  * --(4/29,30: Leak check)--
  * --(~5/3: Vent and pumpdown)--
  * --(5/9: leak check)-- 

 * ITMX: 
  * --(4/2~: closing chamber and start pumping down.)--
  * --(4/10: Cooling starts.)--
  * --(5/8: Cooling done)--

 * 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.)--
  * --(5/8: Cooling done)--

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

==== Note ====
 * 

==== Night work ====

==== Weekend ====

==== Report of work ====
 * COM: Y arm lock was tried with stabilized laser by X arm.
  * Did not succeed by oscillation of VIS if fed back to L of ITMY.

 * Type A: Worked for coil balance for Type A. Coil cable of TM of ETMY might be swapped.
  * Trying damp marionette for Type A seemed to work good.
 * Type B: Transition of Inertial damping for SR2 succeeded.

==== Work plan ====