1. To understand what that means we have to investigate cavity resonators briefly. 2. Like cavity resonators , helical resonators can achieve Q factors in the 1000s. 3. The mouth works then as a cavity resonator . 4. This can, in principle, provide possibility for subwavelength, thin, compact cavity resonators . 5. The klystron, tube waveguide, is a beam tube including at least two apertured cavity resonators . 6. The beam first passes through the " buncher " cavity resonator , through grids attached to each side. 7. On the beamline of an accelerator system, there are specific sections that are cavity resonators for RF. 8. The classical varactor parametric oscillator consists of a semiconductor varactor diode connected to a resonant circuit or cavity resonator . 9. In a laser, light is amplified in a cavity resonator that is usually composed of two or more mirrors. 10. The Relativistic Heavy Ion Collider, and Large Hadron Collider also make use of RF cavity resonators to accelerate particles.