Title page for ETD etd-11102005-141104
|Type of Document
||A new surface resistance measurement method with ultrahigh sensitivity
|No Advisors Found
- Superconductors Mathematical models
|Date of Defense
A superconducting niobium triaxial cavity has been designed and fabricated to study residual
surface resistance of planar superconducting materials. Unlike many other structures
where the test samples are placed in strong magnetic field positions, the edge of a 25.4 mm
or larger diameter sample in the triaxial cavity is located outside the strong field region.
Therefore, the edge effects and possible losses between the thin film and the substrate have
been minimized in this design, ensuring that the induced RF losses are intrinsic to the test
material. The fundamental resonant frequency of the cavity is 1.5 GHz, the same as the
working frequency of CEBAF cavities. The cavity has a compact size compared to its TE011
counterpart, which makes it more sensitive to the sample's loss.
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