Title :
The hydrogen maser cavity step autotuning: theoretical analysis and experimental results
Author_Institution :
Inst. of Electron. Meas., Nizhniy Novgorod, Russia
Abstract :
The theoretical analysis of the hydrogen maser cavity autotuning step system produced by the atom line duality modulation method is performed. The expressions for a random error due to the maser frequency fluctuations are obtained. The experimental data of the frequency measurements of CH1-75 masers, operating in the cavity autotuning mode, are given. The optimal parameters choice of a cavity servo system has allowed to improve the CH1-75 hydrogen maser frequency stability by 3-4 times and achieve Allan deviation (0.7-1.5)·10-15 per 1 d
Keywords :
atomic clocks; cavity resonators; fluctuations; frequency measurement; frequency stability; frequency standards; hydrogen neutral atoms; masers; modulation; tuning; Allan deviation; CH1-75 masers; H; H maser cavity step autotuning; atom line duality modulation method; cavity autotuning mode; cavity servo system; experimental results; frequency measurements; maser frequency fluctuations; maser frequency stability; optimal parameters; random error; theoretical analysis; Atomic measurements; Control systems; Counting circuits; Fluctuations; Frequency; Hydrogen; Masers; Performance analysis; Servomechanisms; Tuning;
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.1999.840725
