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Thermal modelling of coaxial line for cryogenic noise measurements

Soliman, Ahmed and Janzen, Andrew and Weinreb, Sander (2016) Thermal modelling of coaxial line for cryogenic noise measurements. In: 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC). IEEE , Piscataway, NJ, pp. 900-903. ISBN 978-1-4673-8802-3.

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A numerical model is used for accurately calculating the temperature along a coaxial line with ends at different cryogenics temperatures. The calculations take into account the variation of thermal and electrical conductivity with temperature, an important consideration not present in previous publications. Estimates of line attenuation and added noise temperature can be more accurately calculated using this profile, and the profile can provide insight into thermal clamp position and thermal loading calculations. These calculations have a significant impact on the accuracy of variable temperature load and cold attenuator noise measurements.

Item Type:Book Section
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Weinreb, Sander0000-0002-9353-6204
Additional Information:© 2016 IEEE. The authors would like to thank Steve Smith for his comments on this work.
Subject Keywords:coaxial line, cryogenic noise measurements, noise temperature, thermal gradient
Record Number:CaltechAUTHORS:20161025-124628229
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Official Citation:A. Soliman, A. Janzen and S. Weinreb, "Thermal modelling of coaxial line for cryogenic noise measurements," 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC), Seoul, South Korea, 2016, pp. 900-903. doi: 10.1109/URSIAP-RASC.2016.7601381
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71457
Deposited By: George Porter
Deposited On:25 Oct 2016 20:16
Last Modified:08 Dec 2020 00:32

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