Transcription of Charged Particle Accel - MIT
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Charged Particle Accel - MIT
Resonant Cavities and Waveguides35612 Resonant Cavities and WaveguidesThis chapter initiates our study of resonant accelerators., The category includes rf(radio-frequency) linear accelerators, cyclotrons, microtrons, and synchrotrons. Resonantaccelerators have the following features in common:1. Applied electric fields are harmonic. The continuous wave (CW) approximation is valid;a frequency-domain analysis is the most convenient to use. In some accelerators, thefrequency of the accelerating field changes over the acceleration cycle; these changes arealways slow compared to the oscillation The longitudinal motion of accelerated particles is closely coupled to accelerating The frequency of electromagnetic oscillations is often in the microwave regime. Thisimplies that the wavelength of field variations is comparable to the scale length ofaccelerator structures.
or less than the speed of light. The waves are therefore useful for continuous acceleration of synchronized charged particles. A variety of models are used to illustrate the physics of the iris-loaded waveguide, a structure incorporated in many traveling wave accelerators. The interpretation of dispersion relationships is discussed in Section ...
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