| 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 |
| Location: |
Daejon, -1 |
| 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 (427KB) |
