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There is noise in 4-9 MHz.

FFU filters of center-side

measured around FFU filters of center-side in clean room jpg

FFU filter: on, cryocooler: off, fun for EXC chamber: on

There is noise in 4-9 MHz.

0-250 MHz

jpg

0-5 MHz

jpg

0-20 MHz

jpg

KAGRA/Subgroups/PEM/Reports/RFMeasurement/FFUCenter (last edited 2019-02-17 17:33:51 by taiki.tanaka)