A Kind of Small Hydrogen Maser for Time-Keeping

C.F. Lin, J.W. He, Z.C. Zhai, H. X. Huang, J. F. Lu

Abstract: A kind of small hydrogen maser standard far timekeeping is being developed at Shanghai Observatory. The maser employs a cylindrical capacitively loaded cavity construction, resulting in significant size and weight reduction compared to a traditional hydrogen maser. The Q of the compact cavity is electronically enhanced by a suitable positive feedback into the cavity to enable sustained maser oscillation.The long-term stability of the maser is improved by a cavity frequency stabilization servo system. This paper describes the design and development of the maser, as well as photographs of the new maser system during the construction phase.
Published in: Proceedings of the 23th Annual Precise Time and Time Interval Systems and Applications Meeting
December 3 - 5, 1991
Pasadena, California
Pages: 169 - 175
Cite this article: Lin, C.F., He, J.W., Zhai, Z.C., Huang, H. X., Lu, J. F., "A Kind of Small Hydrogen Maser for Time-Keeping," Proceedings of the 23th Annual Precise Time and Time Interval Systems and Applications Meeting, Pasadena, California, December 1991, pp. 169-175.
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