• Corpus ID: 239024313

Development of a Cesium Fountain Clock at HUST: Preliminary Results

@inproceedings{Li2021DevelopmentOA,
  title={Development of a Cesium Fountain Clock at HUST: Preliminary Results},
  author={Hui Li and Yuanbo Du and Hongli Liu and Yun-Xiang Guo and Mingming Liu and Wenbing Li and Zehuang Lu},
  year={2021}
}
A cesium atomic fountain clock is under development at Huazhong University of Science and Technology (HUST) in China. In this paper, we describe the construction of the entire fountain clock system and report the preliminary results. A frequency stability of 2.5×10τ has been achieved by intercomparison with a hydrogen maser, and the factors limiting the frequency stability are also discussed. 

References

SHOWING 1-10 OF 30 REFERENCES
Preliminary evaluation of the Cs atomic fountain frequency standard at NMIJ/AIST
With the aim of contributing to the calibration of the International Atomic Time Scale (TAI), a cesium atomic fountain frequency standard is developed at the National Metrology Institute of Japan.
NIM5 Cs fountain clock and its evaluation
The cesium fountain primary frequency standard NIM5 has been developed at the National Institute of Metrology in China. The NIM5 loads atoms in an optical molasses from the background Cs vapor
Atomic fountains and optical clocks at SYRTE: Status and perspectives
BNM-SYRTE fountains: Recent results
TLDR
Several recent improvements of the BNM-SYRTE fountain ensemble are described, including a new microwave synthesis scheme based on a fully operational cryogenic oscillator and a thorough investigation of some cold collision properties of 133Cs.
Accuracy evaluation of ITCsF2: a nitrogen cooled caesium fountain
For almost two decades, caesium fountain primary frequency standards (PFS) have represented the best realization of the definition of the second in the International System of units. Their accuracy
Caesium atomic clocks: function, performance and applications
TLDR
An overview of currently available commercial caesium clocks and primary standards developed in national metrology institutes is given.
Progress in atomic fountains at LNE-SYRTE
TLDR
An overview of the work done with the Laboratoire National de Metrologie et d'Essais-Systemes de Reference Temps-Espace (LNE-SYRTE) fountain ensemble during the last five years is given, and recent studies of several systematic frequency shifts are reviewed.
The classical caesium beam frequency standard: fifty years later
The caesium beam frequency standard using the separated oscillatory field technique proposed by Ramsey in 1950 has seen intensive development over the last fifty years. Its practical implementation
Quantum projection noise in an atomic fountain: a high stability cesium frequency standard
[1], wheret is the averaging time in seconds. Yet, all these experi-ments were limited by technical noise rather than by thefundamental quantum noise inherent to the measurementprocess [7,8]. It was
Characterization of the Individual Short-Term Frequency Stability of Cryogenic Sapphire Oscillators at the $10^{-16}$ Level
TLDR
The characterization of three cryogenic sapphire oscillators (CSOs) using the three-cornered-hat method is presented, revealing itself very useful to analyze the fractional frequency stability limitations of these state-of-the-art ultrastable oscillators.
...
...