Pollarolo, A.
, Qu, J.
, Rogalla, H.
, Dresselhaus, P.
and Benz, S.
(2010),
Development of a Four-channel System for Johnson Noise Thermometry, Conference on Precision Electromagnetic Measurements Conference Digest, Daejon, KR, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904968
(Accessed December 13, 2024)
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Development of a Four-channel System for Johnson Noise Thermometry
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Abstract
Long integration time is necessary to reach low uncertainty when measuring temperature through Johnson Noise Thermometry (JNT). The main goal of the NIST JNT experiment is to achieve a 6 10-6 relative uncertainty in the measurement of the water triple point, which could contribute to the re determination of Boltzmann s constant. A four-channel JNT system, which will reduce the measurement time two-fold, is being developed with new components, including a switchboard, an analog-digital converter (ADC) and a programmable, recharging power supply system. While implementing the new ADC, a source of systematic error was revealed, as well as a means to increase the measurement bandwidth.Proceedings Title
Conference on Precision Electromagnetic Measurements Conference Digest
Conference Dates
June 13-18, 2010
Conference Location
Daejon, KR
Conference Title
Conference on Precision Electromagnetic Measurements
Pub Type
Conferences
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Keywords
Thermometry, Johnson Noise, Josephson arrays
Citation
Issues
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Created June 12, 2010, Updated October 12, 2021