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NIST Authors in Bold
|Author(s):||Alessio Pollarolo; Jifeng Qu; Horst Rogalla; Paul D. Dresselhaus; Samuel P. Benz;|
|Title:||Development of a Four-channel System for Johnson Noise Thermometry|
|Published:||June 13, 2010|
|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.|
|Conference:||Conference on Precision Electromagnetic Measurements|
|Proceedings:||Conference on Precision Electromagnetic Measurements Conference Digest|
|Pages:||pp. 490 - 491|
|Dates:||June 13-18, 2010|
|Keywords:||Thermometry, Johnson Noise, Josephson arrays,|
|Research Areas:||Quantum Electrical Measurements, Johnson Noise Thermometry|
|PDF version:||Click here to retrieve PDF version of paper (437KB)|