Ehinger, L.
, Acharya, B.
, Barker, D.
, Fedchak, J.
, Scherschligt, J.
, Tiesinga, E.
and Eckel, S.
(2022),
Comparison of two multiplexed portable cold atom vacuum standards, AVS Quantum Science, [online], https://doi.org/10.1116/5.0095011, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=934515
(Accessed October 8, 2025)
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Comparison of two multiplexed portable cold atom vacuum standards
Published
Author(s)
Lucas Ehinger, , , , , ,
Abstract
We compare the vacuum measured by two portable cold atom vacuum standards (pCAVS) based on ultracold $^7$Li atoms. Our pCAVS devices share the same laser system and measure the vacuum concurrently. The two pCAVS together detected a leak with a rate on the order of $10^-6}$ Pa L/s. After fixing the leak, the pCAVS measured a pressure of about 40 nPa with 2.6 % uncertainty. The two pCAVS agree within their uncertainties, even when swapping some of their component parts. Operation of the pCAVS was found to cause some additional outgassing, on the order of $10^-8}$ Pa L/s, which can be mitigated in the future by better thermal management.Citation
AVS Quantum Science
Volume
4
Pub Type
Journals
Download Paper
Keywords
cold atom vacuum standard, UHV and XHV pressure sensors, leak detection
Citation
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Created July 15, 2022, Updated November 29, 2022