Abstract
We have realized an improved resistance calibration setup based on a cryogeniccurrent comparator (CCC). The comparator, with 18 windings and 4647turns in total, is well-suited for all the necessary comparisons with a 100 Ω standard resistor with the quantum Hall effect and inside the range of standard resistance values from1 Ω to 1 MΩ. The new state-of-the-art setup is equipped with a low-noise dc SQUID (superconductingquantum interference device) and a digital double current source. Proper damping of theCCC resonance, careful electronics design (‘box-in-box’) and application of internalwideband feedback to the SQUID sensor improve the dynamic stability considerably andlower the overall measurement time as compared against our previous setup.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
