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Systematic Uncertainty Evaluation of the Cesium Fountain Primary Frequency Standard at NPL India

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Abstract

CSIR-NPL, India (NPLI) has developed its first Cesium atomic fountain (NPLI-CsF1). The indigenously developed fountain frequency standard is now fully operational and its frequency is now being evaluated along with all systematic and statistical uncertainties. Seven frequency evaluations have been recently conducted to estimate fountain frequency with respect to UTC (Coordinate Universal Time). The fountain frequency is compared with the Hydrogen MASER frequency which is contributing to UTC and hence fountain frequency is evaluated with respect to the UTC The fountain frequency is stable to few parts in 1015 at <1 day averaging time.

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Acknowledgments

The authors are gratefully acknowledged funding from Council of Scientific and Industrial Research, India for supporting the work.

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Authors and Affiliations

  1. Time and Frequency Section, CSIR—National Physical Laboratory, Dr. K. S. Krishnan Road, New Delhi, 110012, India

    Aishik Acharya, Vattikonda Bharath, Poonam Arora, Suchi Yadav, Ashish Agarwal & Amitava Sen Gupta

  2. Academy of Scientific and Innovative Research, Chennai, India

    Aishik Acharya & Vattikonda Bharath

  3. The NORTHCAP University, Gurgaon, India

    Amitava Sen Gupta

Authors
  1. Aishik Acharya
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  2. Vattikonda Bharath
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  3. Poonam Arora
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  4. Suchi Yadav
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  5. Ashish Agarwal
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  6. Amitava Sen Gupta
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Correspondence to Aishik Acharya.

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Acharya, A., Bharath, V., Arora, P. et al. Systematic Uncertainty Evaluation of the Cesium Fountain Primary Frequency Standard at NPL India. MAPAN 32, 67–76 (2017). https://doi.org/10.1007/s12647-016-0190-4

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  • DOI: https://doi.org/10.1007/s12647-016-0190-4

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