Superconducting DC and RF Properties of Ingot Niobium

Pashupati Dhakal; Gianluigi Ciovati; Peter Kneisel; Ganapati Rao Myneni

Superconducting DC and RF Properties of Ingot Niobium

Accelerator Physics 2012-02-06 v1 Superconductivity

Authors: Pashupati Dhakal , Gianluigi Ciovati , Peter Kneisel , Ganapati Rao Myneni

Abstract

The thermal conductivity, DC magnetization and penetration depth of large-grain niobium hollow cylindrical rods fabricated from ingots, manufactured by CBMM subjected to chemical and heat treatment were measured. The results confirm the influence of chemical and heat-treatment processes on the superconducting properties, with no significant dependence on the impurity concentrations in the original ingots. Furthermore, RF properties, such as the surface resistance and quench field of the niobium rods were measured using a TE011 cavity. The hollow niobium rod is the center conductor of this cavity, converting it to a coaxial cavity. The quench field is limited by the critical heat flux through the rods' cooling channel.

Keywords

ingot niobium superconducting properties thermal conductivity penetration depth surface resistance quench field TE011 cavity heat treatment

Cite

@article{arxiv.1202.0811,
  title  = {Superconducting DC and RF Properties of Ingot Niobium},
  author = {Pashupati Dhakal and Gianluigi Ciovati and Peter Kneisel and Ganapati Rao Myneni},
  journal= {arXiv preprint arXiv:1202.0811},
  year   = {2012}
}

Comments

Prepared for the Proc. of SRF 2011, Chicago

Superconducting DC and RF Properties of Ingot Niobium

Abstract

Keywords

Cite

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