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|Title:||Drift-compensated low-noise frequency synthesis based on a CryoCSO for the KRISS-F1(Cs)|
|Citation:||Proceeding of the 2016 Conference on Precision Electromagnetic Measurements, as published in CPEM digest, 2016 / pp.1-2|
|Conference Name:||Conference on Precision Electromagnetic Measurements (CPEM) (10 Jul 2016 - 15 Jul 2016 : Ottawa, Canada)|
|Myoung-Sun Heo, Sang Eon Park, Sang-Bum Lee, Hyun-Gue Hong, Taeg Yong Kwon, Chang Yong Park, Won-kyu Lee, Dai-Hyuk Yu, and John G. Hartnett|
|Abstract:||This paper reports implementation and operation of a frequency synthesizer based on a cryocooled cryogenic Sapphire oscillator (cryoCSO) for the Cesium atomic fountain clock developing at KRISS, KRISS-Fl(Cs). With use of this highly stable local oscillator, the short-term stability of KRISS-F1(Cs) was greatly improved and reaches the quantum projection noise limit, resulting in the measured lowest Allan deviation of 2.6×10-14. In addition, the long-term drift (4.8×10-14/day) of the cryoCSO could be compensated and reach below 5×10-16/day as low as state-of-the-art active hydrogen masers.|
|Keywords:||Cryogenic Sapphire oscillator; fountain clock; local oscillator; quantum projection noise; stability|
|Appears in Collections:||IPAS publications|
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