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First accuracy evaluation of the NRC-FCs2 primary frequency standard

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1088/1681-7575/ab7c54
AuthorSearch for: 1ORCID identifier: https://orcid.org/0000-0003-2056-2871; Search for: 1ORCID identifier: https://orcid.org/0000-0002-4588-3957; Search for: 1; Search for: 1ORCID identifier: https://orcid.org/0000-0002-1188-2104; Search for: ORCID identifier: https://orcid.org/0000-0002-5518-3719; Search for: ORCID identifier: https://orcid.org/0000-0002-3523-278X; Search for: ORCID identifier: https://orcid.org/0000-0003-3652-9638
Affiliation
  1. National Research Council of Canada. Metrology Research Centre
FormatText, Article
Subjectprimary frequency standard; atomic clock; GNSS frequency comparison; cold atoms
Abstract
We report the first accuracy evaluation of NRC-FCs2, an atomic fountain clock developed at the National Research Council Canada. The short term stability at high atomic density is 1.1 × 10⁻¹³ at 1 second of averaging time. The typical overall fractional type B uncertainty is 2.3 ×10⁻¹⁶. GNSS-based frequency comparisons of NRC-FCs2 with the SI second, as reported by the BIPM over fourteen months, give a fractional frequency difference of −2.4(3.7) × 10⁻¹⁶.
Publication date
PublisherIOP
In
  • Metrologia 57, no. 3: 1–15.
LanguageEnglish
Peer reviewedYes
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Record identifier6117b679-d7db-4fc1-938b-b0ab418d243f
Record created2020-06-29
Record modified2020-07-15
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