Systematic shift uncertainty evaluation of IEN CSF1 primary frequency standard

We report a preliminary systematic shift uncertainty evaluation of our cesium fountain and of the first comparison with the NIST-F1 clock of the National Institute of Standard and Technology (NIST) with a two way satellite comparison system. The stability of the time scale UTC (IEN), (generated with...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2003-04, Vol.52 (2), p.267-271
Main Authors: Levi, F., Lorini, L., Calonico, D., Godone, A.
Format: Article
Language:English
Subjects:
Atomic measurements
Beams (structural)
Clocks
Frequency measurement
Frequency standards
Instrumentation
Laser transitions
Laser tuning
NIST
Satellites
Stability
Standards development
Time measurement
Uncertainty
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Summary:We report a preliminary systematic shift uncertainty evaluation of our cesium fountain and of the first comparison with the NIST-F1 clock of the National Institute of Standard and Technology (NIST) with a two way satellite comparison system. The stability of the time scale UTC (IEN), (generated with a commercial Cs beam) is insufficient to allow evaluation of systematic shifts by conventional techniques; therefore, the accuracy evaluation of the fountain was accomplished using mainly fast differential techniques, resulting in an overall uncertainty of 3/spl times/10/sup -15/.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2003.811684