| Popis: |
At the National Research Council Canada we are currently performing the first accuracy evaluation of our newly developed caesium fountain clock, NRC-FCs2. This primary frequency standard operates with a short term stability of $\sigma_{\mathbf{y}}(\tau)=1.1\ \mathbf{x}\ 10^{-13}\tau^{-1/2}$ and, upon full evaluation, we expect to achieve a type B uncertainty in fractional frequency below $5\ \mathbf{x}\ 10^{-16}$ . We will discuss the current status of the evaluation, including several evaluated shifts, as well as the outstanding systematics yet to be fully characterized. |
