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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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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description 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/.
doi_str_mv 10.1109/TIM.2003.811684
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subjects Atomic measurements
Beams (structural)
Clocks
Frequency measurement
Frequency standards
Instrumentation
Laser transitions
Laser tuning
NIST
Satellites
Stability
Standards development
Time measurement
Uncertainty
title Systematic shift uncertainty evaluation of IEN CSF1 primary frequency standard
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