In this article we report the successful locking and operation of an 8
m Michelson interferometer which uses multistage cantilever spring vi
bration isolators. The control system for normal mode damping is descr
ibed. The performance and dominant noise sources of this interferomete
r are discussed. (C) 1998 American Institute of Physics. [S0034-6748(9
8)02007-3].