Title :
Recent results of PTB´s primary clock CS1
Author :
Bauch, Andreas ; Fischer, Bernd ; Heindorff, Thomas ; Schröder, Roland
Author_Institution :
Phys. Tech. Bundesanstalt, Braunschweig, Germany
Abstract :
This paper describes the current performance of the PTB primary clock CS1. After major reconstruction during 1995 and 1996, routine clock operation was started in May 1997, and since July 1998 the CS1 again determines with other primary clocks the duration of the scale unit of TAI. An evaluation of the CS1 Type B uncertainty yielded 7.10 -15 (1σ). The performance of the CS1 is illustrated by comparison results with TAI and free atomic time scales
Keywords :
atomic clocks; frequency standards; CS1 Type B uncertainty; PTB primary clock CS1; TAI; free atomic time scales; performance; routine clock operation; Atomic beams; Atomic measurements; Clocks; Frequency; Lenses; Magnetic field measurement; Magnetic separation; Optical design; Quantization; Uncertainty;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.840703
