Title :
Development of a broadband shot noise measurement system at low-temperature for noise thermometry
Author :
Park, J. ; Rehman, M. ; Choi, J.S. ; Khim, Z.G. ; Ryu, S.W. ; Song, W. ; Chong, Y.
Author_Institution :
Korea Res. Inst. of Stand. & Sci., Daejeon, South Korea
Abstract :
We report our experimental setup for the shot noise thermometry system at KRISS. Precision RF measurement setup in the frequency range of about 1 GHz has been installed in a He-3 refrigerator, which can be cooled down to 300 mK. The shot noise of Al-AlOx-Al tunnel junction, fabricated by two angle- evaporation technique, was measured and compared with theoretical curve. The inferred temperature from the noise curve agrees well with the measured temperature.
Keywords :
electric noise measurement; radiofrequency measurement; refrigerators; shot noise; temperature measurement; thermometers; He-3 refrigerator; KRISS; angle evaporation technique; broadband shot noise measurement system; noise thermometry; precision RF measurement; temperature; tunnel junction; Electromagnetic measurements; Noise measurement;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2010 Conference on
Conference_Location :
Daejeon
Print_ISBN :
978-1-4244-6795-2
DOI :
10.1109/CPEM.2010.5543645
