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SRF Web
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Superconducting Radio Frequency (SRF) cavities are the indispensable parts of the CEBAF accelerator. The performance of SRF cavities relies critically on surfaces properties. A Surface Science Laboratory (SSL) has been established to study the surfaces of SRF cavities in general and Nb surfaces in particular. A better understanding of Nb surfaces prepared by various techniques and procedures in terms of texture, morphology, oxide structure, defect, impurity, and level of tolerable contamination will enable us to make cavities with the highest performance and reproducibility at the lowest possible cost.
The SSL has all the instruments for doing surface observation and measurement on Nb, including sample preparation. Some surface instruments are quite unique. Each instrument is explained briefly as follows:
