A Superconducting Half-Wave Resonator for Accelerating High Velocity Ions

Abstract
A computer model for the design of superconducting resonators has been developed which includes feedback effects due to non-linear superconducting surface resistance. These non-linearites may be due to either magnetic field or temperature. We have utilized this model to optimize the design of accelerating resonators for heavy ions. A half-wave structure of this design has been fabricated and is being evaluated with respect to the parameters of the model. Preliminary experimental results agree with the model to within a few percent. The half-wave design is particularly well suited to high frequency, high ß resonators because of its low magnetic field, or to low frequency, very low ß resonators because of its good mechanical stability.

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