DURATION: 2020/04/18 9:00-17:00 JST, all times posted in JST

operator shift : Masayuki Nakano
co-operator shift : T. Uchiyama
Cooperation with: S. Miyoki
CURRENT ENVIRONMENT: Seismicmotion gradually increased

shift SUMMARY : BNS range 0.3Mpc ~ 0.6Mpc

time / event
9:00/ shift started. IFO status is not observing.
Nakano started alignment tuning.
12:29 / Once locked. Soon lock lost.

14:30-15:00 / Miyoki, Uchiyama entered the tunnel to adjust AS camera. Pitch and Yaw of the mirror in front of the AS camera were adjusted by micrometers on the mirror mount.

15:10 / Lock recovered ~280kpc
M. Nakano still continues alignment tuning.
15:45 / Observing started. ~370kpc
[Observation maintained 3min]
15:48 / Lock lost

Nakano started alignment tuning again.

16:58 / Lock recovered. IMC output power is 4.0W.
17:01 / Observing started. ~620kpc.

Duty cycle 2020/04/18 9:00 -- 17:00 : Observation mode ~0% (3min)