KAGRA VIS Operations Manual - Type B Suspension
This page has information of interest to operators. For installation stuff, see KAGRA/Subgroups/VIS/TypeB. The Type B suspension has an IP with a GAS filter, two more GAS stages (standard filter and bottom filter) and a payload.
The SRs have a Type-Bp-style payload. The BS has a custom payload.
(from JGW-G1301676-v1)