Resistive-Based Micro-Kelvin Temperature Resolution for Ultra-Stable Space Experiments.
Sensors (Basel)
; 23(1)2022 Dec 23.
Article
em En
| MEDLINE
| ID: mdl-36616740
ABSTRACT
High precision temperature measurements are a transversal need in a wide area of physical experiments. Space-borne gravitational wave detectors are a particularly challenging case, requiring both high precision and high stability in temperature measurement. In this contribution, we present a design able to reach 1 µK/Hz in most of the measuring band down to 1 mHz, and reaching 20 µK/Hz at 0.1 mHz. The scheme is based on resistive sensors in a Wheatstone bridge configuration which is AC modulated to minimize the 1/f noise. As a part of our study, we include the design of a test bench able to guarantee the high stability environment required for measurements. We show experimental results characterising both the test bench and the read-out, and discuss potential noise sources that may limit our measurement.
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MEDLINE
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En
Ano de publicação:
2022
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Article