Title :
Long term study of the H-maser clocks at the Royal Observatory of Belgium
Author :
Roosbeck, F. ; Defraigne, Pascale
Author_Institution :
Dept. of Time Lab, Belgium R. Obs., Brussels, Belgium
Abstract :
Two hydrogen masers are in operation in the time lab of the Royal Observatory of Belgium. One is a CH1-75 operational since 1991 and the other one is a CH1-76 operational since the 1999. This second one is used to provide a frequency needed by the active HM CH1-75 for the cavity auto-tuning. The stability of the masers since their putting in operation is studied.
Keywords :
laser cavity resonators; laser stability; laser tuning; masers; CH1-75 hydrogen maser; CH1-76 hydrogen maser; H-maser clocks; cavity auto-tuning; Clocks; Frequency conversion; Global Positioning System; Hydrogen; Masers; Observatories; Space missions; Stability; Switches; Temperature;
Conference_Titel :
Frequency Control Symposium and Exposition, 2005. Proceedings of the 2005 IEEE International
Print_ISBN :
0-7803-9053-9
DOI :
10.1109/FREQ.2005.1573939
