| CPC H05H 7/02 (2013.01) [H05H 7/12 (2013.01); H05H 9/00 (2013.01); H05H 2007/025 (2013.01)] | 20 Claims | 

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               1. A resonator for a linear accelerator, comprising: 
            a resonator chamber; 
                a resonator coil, disposed within the resonator chamber; and 
                an exciter, disposed at least partially within the resonator chamber and further comprising: 
                an exciter coil inner portion, extending along an exciter axis; 
                an exciter coil loop, disposed at a distal end of the exciter coil inner portion; and 
                a drive mechanism, the drive mechanism comprising at least a rotation component to rotate the exciter coil loop around the exciter axis. 
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               15. A resonator for a linear accelerator, comprising: 
            a resonator chamber; 
                a solenoidal resonator coil, disposed within the resonator chamber; and 
                an exciter, disposed at least partially within the resonator chamber and outside the solenoidal resonator coil, the exciter further comprising: 
                an exciter coil inner portion, extending along an exciter axis; 
                an exciter coil loop, disposed at a distal end of the exciter coil inner portion; and 
                a drive mechanism, the drive mechanism comprising at least a rotation component to rotate the exciter coil loop around the exciter axis, in order to adjust a coupling of power from the exciter loop to the solenoidal resonator coil. 
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