Microphonics Testing of the FEL03 Cryomodule

A typical histogram of cavity detuning is shown in Figure 1. The histograms were produced by sampling 100 times per second for 500 seconds. ... A 446 Hz peak is well isolated from adjacent peaks in the plot for cavity #1, so that the Q of the mode can be estimated to be 149. ... is much less than for the SNS cavities (about 550 Hz), and that ... ................
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