[Ushiba, Kenta, Dan, Yuzu]
In the morning, the commissioners suffered from the unknown lockloss. The commissioners checked the timeseries data and found the cause.
The main lockloss cause is the block of the IR beam to the AS table. Around these time, PEM team worked around the AS table. The human accidentaly passed the side of the AS table and blocked the IR beam by the body. I attached the screenshot at the lockloss time. We can see the transient behavior on K1:LSC-AS_PDA1_RF17_Q_ERR_DQ and the sudden drop on and K1:LSC-AS_PDA1_DC_OUT_DQ.

The lockloss cause was Identifyed for the lockloss of 2024/11/05 9:51:36, 2024/11/05 10:13:38, and 2024/11/05 10:46:12.

For 2024-11-05 09:59:40 JST, the main cause is still unknown. From Fig, before the lockloss, the K1:LSC-TR_IRX_NORM_OUT_DQ and K1:LSC-TR_IRY_NORM_OUT_DQ looks gradually reduced over 3 seconds. Coincidently, the K1:ASC-DHARD_Y_OUT_DQ looks getting large, though the error signal of K1:ASC-DHARD_Y_OUT_DQ didn't change drastically. I'm not sure why this happened.