DocumentCode :
2126253
Title :
Preliminary results from the USNO cesium fountain atomic clock
Author :
Burt, E. ; Swanson, T. ; Ekstrom, C.
Author_Institution :
US Naval Obs., Washington, DC, USA
fYear :
2000
fDate :
14-19 May 2000
Firstpage :
10
Lastpage :
11
Abstract :
We discuss a cesium fountain atomic clock that we have built at the U.S. Naval Observatory (USNO). At the time of this writing, all of the subsystems for the device have been built and final assembly is complete. We expect to present initial data from the device soon. We also discuss different strategies for reporting frequency offsets of the fountain from UTC(USNO) and for steering its local oscillator (crystal oscillator or hydrogen maser). Concurrent with this work we are building a rubidium fountain, that may have even better systematics than the cesium fountain.
Keywords :
Atomic clocks; Cesium; Frequency stability; Frequency standards; Laser cooling; Magnetic shielding; Radiation pressure; Zeeman effect; Cs; atom collection; cold atoms; device assembly; fountain atomic clock; frequency offsets; laser cooling; local oscillator steering; magnetic shield design; quadratic Zeeman shift; Atom optics; Atomic beams; Atomic clocks; Fluctuations; Frequency; Lattices; Magnetic shielding; Observatories; Optical beams; Stability;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
Type :
conf
DOI :
10.1109/CPEM.2000.850850
Filename :
850850
Link To Document :
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