Qualification of niobium materials for superconducting radio frequency cavity applications: View of a condensed matter physicist

We address the issue of qualifications of the niobium materials to be used for superconducting radio frequency (SCRF) cavity fabrications, from the point of view of a condensed matter physicist/materials scientist. We focus on the particular materials properties of niobium required for the functioni...

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Bibliographic Details
Main Authors: Roy, S. B., Myneni, G. R.
Format: Conference Proceeding
Language:English
Subjects:
Condensed matter physics
FABRICATION
Holes
IMPURITIES
Material properties
NIOBIUM
PARTICLE ACCELERATORS
PROCESSING
RADIOWAVE RADIATION
RF SYSTEMS
Standardization
SUPERCONDUCTING CAVITY RESONATORS
Superconductivity
THERMODYNAMIC PROPERTIES
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Summary:We address the issue of qualifications of the niobium materials to be used for superconducting radio frequency (SCRF) cavity fabrications, from the point of view of a condensed matter physicist/materials scientist. We focus on the particular materials properties of niobium required for the functioning a SCRF cavity, and how to optimize the same properties for the best SCRF cavity performance in a reproducible manner. In this way the niobium materials will not necessarily be characterized by their purity alone, but in terms of those materials properties, which will define the limit of the SCRF cavity performance and also other related material properties, which will help to sustain this best SCRF cavity performance. Furthermore we point out the need of standardization of the post fabrication processing of the niobium-SCRF cavities, which does not impair the optimized superconducting and thermal properties of the starting niobium-materials required for the reproducible performance of the SCRF cavities according to the design values.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4935320