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The staggering of the HOM frequencies in an RF system reduces the
probability that two or more HOM impedances will contribute to the
same coupled bunch mode. The staggering is accomplished by varying
the cavity dimensions in uniform steps from cavity to cavity. The
staggering is expected to vary with HOM type. Staggering steps per
cavity are entered as an optional column in the HOM definition file.
Randy Flood
2006-11-06