Uchiyama
Pumping down of EY started at 9:45 by the root pump at between EYA and EYC.
The vacuum pressure reached 0.1 atm about 3PM and one additional root pump was started pumping.
Changes of vacuum pressure are followings.
9:45 1atm, Pumping down started
10:45 0.71 atm
11:45 0.51 atm
13:45 0.23 atm
15:00 0.11 atm, One additional root pump at EYA was started pumping
15:15 0.09 atm
During the evacuation, I monitored and offloaded the IP_L,T,Y.
The total amount of steps I adjusted is as follows.
IP_L: -33000 steps
IP_T: -30000 steps
IP_Y: +1600 steps
It appears that channel K1:VAC-PRESSURE_Y_EYA was irregularly failing to get data.
