We started pumping down from GVmc to GVbsx and GVbsy on 16 March about 9:35..
We use a roots pump (NeoDry 36E) at PR2 for pumping.

Vacuum pressure reached 0.1 atm at 13:35
We started another four roots pumps.

There was an alert in KAGRA at 15:45 and we closed valves.
The alert was reset around 18PM and pressure was 36Pa.
We started pumping by 3units of TMPs and roots pumps.

In the morning on 17 March, pressure was 1.3e-4.
We started leak check.