Title :
Some results and an estimate of the current uncertainty of the PTBs reconstructed primary clock CS1
Author :
Bauch, Andreas ; Fischer, Bernd ; Heindorff, Thomas ; Schröder, Roland
Author_Institution :
Phys. Tech. Bundesanstalt, Braunschweig, Germany
fDate :
4/1/1999 12:00:00 AM
Abstract :
The paper briefly describes the reconstructed primary clock CS1 of the Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany, the estimation of its type B standard uncertainty, and some results obtained during the first year of routine operation. The present estimate of the CS1 type B standard uncertainty is 7×10-15 (Iσ)
Keywords :
atomic clocks; caesium; frequency standards; measurement uncertainty; Cs; PTB primary clock CS1; frequency standard; reconstructed primary clock; time standard; type B standard uncertainty; Atomic beams; Clocks; Frequency; Helium; Magnetic separation; Microwave ovens; Quantization; Resonance; Uncertainty; Vacuum systems;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
