=== 2018/8/30(Thur.) ===

 * PSL for high-power laser will finish by 8/31 and they provides the high power laser to the interferometer.
  * Out put of PSL will be few Watts.
  * Safety for the high power laser should be announced.
 * Actual night work will start 9/3 (9/1, 9/2 are weekends).
 * We will have a daily meeting on 9/3 that is the first day of night work managed by Izumi.
  * Furuta-san will attend this meeting every day to tell the laser hazard for Engineers.
 * One Car (Serena) will be assigned to commissioning work.


==== Attendance ====
 * Control room: Yamamoto
 * Fan hut: Miyakaw, Yokozawa, Takahashi, Kimura, Akutsu, Enomoto, Kozu
 * educe:

==== Laser hazard ====

||||                  ||Before 3PM ||After 3PM ||
|||| || ||||
||Center||upstream IMM||IR         ||IR        ||
|| ||PSL               ||IR & Green||IR & Green||
||||X end 1F          ||IR         ||IR        ||
||||Y end 1F          ||N/A        ||N/A       ||

---- 
==== Transition from morning work (*:responsible person) ====

 

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

 * Alignment preparation started.
  * Duct between IMM and IFI was moved and COACH filter was set there.
 * Test of PDA100 for ETMX was done.

==== Work plan (*:responsible person) ====
 * Air will be introduced to PR2 and PR3 chamber to keep clean by having higher pressure.
  * O-rings should be kept clean during opening doors.
  * We do not have any more spare of O-ring.
  * O-ring for PR3 should be checked.