The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CPAPER
AU - Spradlin, J.K.
AU - Reece, C.E.
AU - Valente-Feliciano, A-M.
TI - A Multi-Sample Residual Resistivity Ratio System for High Quality Superconductor Measurements
J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015
AB - For developing accelerator cavity materials, superconducting transition temperature (T_{C}), transition width (ΔTC), and residual resistivity ratio (RRR), are useful parameters to correlate with SRF performance and fabrication processes of bulk, thin film, and novel materials. The RRR gauges the purity and structure of the superconductor based on the temperature dependence of electron scattering in the normal conducting state. Combining a four point probe delta pulse setup with a switch allows multiplexing of the electrical measurements to 32 samples per cooldown cycle. The samples are measured inside of an isothermal setup in a liquid helium (LHe) dewar. The isothermal setup is required for a quasistatic warmup of the samples through TC. This contribution details the current setup for collecting RRR and TC data, the current standard of throughput, measurement quality of the setup, and the improvements underway to increase the system’s resolution and ease of use.
PB - JACoW
CY - Geneva, Switzerland
SP - 726
EP - 730
KW - ECR
KW - niobium
KW - cavity
KW - feedback
KW - electron
DA - 2015/12
PY - 2015
SN - 978-3-95450-178-6
DO - 10.18429/JACoW-SRF2015-TUPB063
UR - http://srf2015.vrws.de/papers/tupb063.pdf
ER -