Resonator, linear accelerator configuration and ion implantation system having rotating exciter

A resonator for a linear accelerator, comprising:

• a toroidal resonator coil, the toroidal resonator coil defining a toroidal shape;
• and
• an exciter, disposed at least partially within the toroidal resonator coil 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.

A method of operating a linear accelerator, comprising:

• sending RF power to an exciter of an RF resonator in the linear accelerator, wherein the RF resonator comprises a toroidal resonator coil and a resonator can, and wherein the exciter comprises an exciter loop, disposed within the toroidal resonator coil;
• conducting an ion beam through the linear accelerator;
• and
• rotating the exciter loop while the ion beam is conducted through the linear accelerator, wherein a power coupling between the exciter and the toroidal resonator coil is adjusted.