Temperature stabilization of a lab space at 10 mK-level over a day
Name
095116_1_5.0213133.pdf
Description
Published version
Size
4.09 MB
Format
Adobe PDF
Checksum (MD5)
8ca81884067580ce20c0e7a8e91aaf2e
Author(s)
Fife, Dylan
Shin, Dong-Chel
Sudhir, Vivishek
Date Issued
September 27, 2024
Journal
Review of Scientific Instruments
Publisher
AIP Publishing
Citation
Dylan Fife, Dong-Chel Shin, Vivishek Sudhir; Temperature stabilization of a lab space at 10 mK-level over a day. Rev. Sci. Instrum. 1 September 2024; 95 (9): 095116.
Version
Final published version
Abstract
Temperature fluctuations over long time scales (≳ 1 h) are an insidious problem for precision measurements. In optical laboratories, the primary effect of temperature fluctuations is drifts in optical circuits over spatial scales of a few meters and temporal scales extending beyond a few minutes. We present a lab-scale environment temperature control system approaching 10 mK-level temperature instability across a lab for integration times above an hour and extending to a day. This is achieved by passive isolation of the laboratory space from the building walls using a circulating air gap and an active control system feeding back to heating coils at the outlet of the laboratory’s Heating-Ventilation-Air-Conditioning (HVAC) unit. These techniques together result in 20 dB suppression of the temperature power spectrum across the lab at 10−4 Hz—approaching the limit set by statistical coherence of the temperature field—and 10 mK Allan deviation around 15 °C after an hour of averaging, which is an order of magnitude better than any previous report for a full laboratory.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
LIGO (Observatory : Massachusetts Institute of Technology)
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivatives
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/5.0213133
