Duration : 2020/04/17 17:00-25:00 JST, all times posted in JST
Operator shift : K.Kokeyama
Co-operator shift : K.Miyo
Supported by T. Yamamoto
Shift Summary :
BNS Range : 0.5 Mpc
Environment : Microseisms were quiet. Earthquake hit onece.
Duty cycle : 89%
Time / Event
17:00 / Shift started. The detector was operating stably.
17:06 / Lost lock
- Lost lock several times during the lock acquisition.
17:48 / Recover to observation state (lost lock for 42 minutes)
21:12 / Lost lock due to earthquake in Gifu-city (See attached figure)
- 21:20 / SDF accept the change of channel of "K1:LSC-CARM_SERVO_IN1GAIN". Value was changed from 6 to 7.
21:23 / Recover to observation after accepting the channel change. (Lost lock for 11 minutes)
- 23:41 / we noticed that the Y-arm green was not on resonance.
- 23:4? / After several minutes, the green recoverd.
25:00 / Detector is continuously observing.
