Jenne, Hang

Since the microseismic was high these days, we quickly checked that if the CPS FF to reduce the MICH motion was still working. The conclusion was NO...

While it worked 3 yrs ago (LHO:24134), currently it only injected a large amount of noise to the system. In the attached spectra, the blue traces were without the CPS FF, and the red ones were with the CPSFF on.