I checked OpLev beam path during the installation of SI at IYC.
I confirmed all OpLevs were not clpped by SI.
Since I haven't centered MN OpLevs, OpLev centering should be done before starting pumping.
I checked OpLev beam path during the installation of SI at IYC.
I confirmed all OpLevs were not clpped by SI.
Since I haven't centered MN OpLevs, OpLev centering should be done before starting pumping.
[Takano, Tamaki, Ushiba]
I performed OpLev centering of MNL MNP/Y, MNR/Y, MNV.
Since there is no QPD for MNT somehow, I skipped it, but maybe no problem for vacuum evacuation.