Title :
Measurements with multiple operational fountain clocks
Author :
Peil, Steven ; Crane, Scott ; Hanssen, James ; Swanson, Thomas B. ; Ekstrom, Christopher R.
Author_Institution :
Clock Dev. Div., United States Naval Obs., Washington, DC, USA
Abstract :
Performance of the first two operational rubidium fountains at the USNO is presented using relative measurements and comparisons against other timescales. Recent results with four fountains indicate frequency agreement at the 10-15 level and good agreement with the primary frequency standards contributing to TAI.
Keywords :
atomic clocks; frequency standards; rubidium; Rb; TAI; USNO; multiple operational fountain clocks; operational rubidium fountains; primary frequency standards; Atomic clocks; Masers; Standards; Time frequency analysis; Uncertainty;
Conference_Titel :
Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International
Conference_Location :
San Fransisco, CA
Print_ISBN :
978-1-61284-111-3
DOI :
10.1109/FCS.2011.5977842
