||Mechanical vibrations can detune
superconducting radio frequency cavities unless a tuning mechanism
counteracting the vibrations is present. Due to their narrow operating
bandwidth and demanding mechanical structure, the 13-cell 3.9GHz SCRF
cavities for the Charged Kaons at the Main Injector (CKM) experiment at
Fermilab are especially susceptible to this microphonic phenomena.
We present early results correlating RF frequency detuning with
cavity vibration measurements for CKM cavities; initial detuning
compensation results with piezoelectric actuators are also presented.