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The peak of the noise is around 112.5 MHz.

Cryocooler P53

measured near Cryocooler P53 jpg

measured in 6 situations

situation

small cryocooler

big cryocooler

FFU filters & fan for EXC chamber

1

off

off

on

2

on

off

on

3

on

on

on

4

on

on

off

5

off

off

off

Situation 6 is situation 5 with an ele-mag protection sheet

0-250 MHz

0-5 MHz

50-150 MHz

110-115 MHz

KAGRA/Subgroups/PEM/Reports/RFMeasurement/Cryocooler1 (last edited 2019-02-17 17:26:46 by taiki.tanaka)