A new method of surface resistance measurement with a niobium triaxial cavity working at 2 K

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dc.contributorVirginia Techen
dc.contributor.authorLiang, C. N.en
dc.contributor.authorPhillips, L.en
dc.contributor.authorSundelin, R.en
dc.contributor.departmentPhysicsen
dc.date.accessed2014-03-20en
dc.date.accessioned2014-04-09T18:12:14Zen
dc.date.available2014-04-09T18:12:14Zen
dc.date.issued1993-07en
dc.description.abstractA 1.5-GHz superconducting niobium triaxial cavity has been fabricated to study residual surface resistance of superconducting materials at 2 K. Unlike many other structures where the entire test samples have to be placed in strong magnetic field locations, we have the edge of a 25.4 mm or larger diameter sample outside of the strong field region, a procedure which will greatly reduce edge effects and image current losses between the thin film and substrate. A calorimetric method is used to measure the sample losses, and is designed to resolve a 10-muK temperature change using 16 carbon resistor sensors. A detection limit of 0.05-muW power dissipation has been determined with a calibration heater, which corresponds to a surface resistance of 0.02 nOMEGA at a maximum cavity magnetic field of 250 G. Initial cavity testing was performed in a magnetically unshielded cryostat, yielding a 2.2-muOMEGA residual resistance which was measured by both the rf measurement and the calorimetric measurement.en
dc.description.sponsorshipU.S. Dept of Energy DE-AC05-84ER45150en
dc.identifier.citationLiang, C. N.; Phillips, L.; Sundelin, R., "A new method of surface resistance measurement with a niobium triaxial cavity working at 2 K," Rev. Sci. Instrum. 64, 1937 (1993); http://dx.doi.org/10.1063/1.1143979en
dc.identifier.doihttps://doi.org/10.1063/1.1143979en
dc.identifier.issn0034-6748en
dc.identifier.urihttp://hdl.handle.net/10919/47019en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/rsi/64/7/10.1063/1.1143979en
dc.language.isoen_USen
dc.publisherAIP Publishingen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectcavitationen
dc.subjectsurface finishingen
dc.subjectelectric resistivityen
dc.subjectmagnetic field measurementsen
dc.subjectmagnetic field sensorsen
dc.subjectmagnetic fieldsen
dc.subjectniobiumen
dc.subjectsurface conductivityen
dc.subjectsurface structureen
dc.subjectthin film structureen
dc.titleA new method of surface resistance measurement with a niobium triaxial cavity working at 2 Ken
dc.title.serialReview of Scientific Instrumentsen
dc.typeArticle - Refereeden

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