DocumentCode
2592460
Title
The cryogenic fountain ITCsF2
Author
Levi, Filippo ; Calosso, Claudio ; Calonico, Davide ; Lorini, Luca ; Bertacco, Elio K. ; Godone, Aldo ; Costanzo, Giovanni A. ; Mongino, Barbara ; Jefferts, Steven R. ; Heavner, Thomas P. ; Donley, Elizabeth A.
Author_Institution
Ist. Naz. di Ricerca Metrologica, Torino, Italy
fYear
2009
fDate
20-24 April 2009
Firstpage
769
Lastpage
773
Abstract
This paper describes the new twin laser-cooled Cs fountain primary frequency standards NIST-F2 and IT-CsF2, and presents their most innovative design features. Most significant is a cryogenic microwave interrogation region which dramatically reduces the blackbody radiation shift. We present as well a preliminary accuracy evaluation of IT-CsF2.
Keywords
atomic clocks; caesium; cryogenics; frequency standards; laser cooling; IT-CsF2; NIST-F2; blackbody radiation shift; cryogenic fountain; frequency standards; twin laser cooled caesium fountain; Cryogenics; Frequency conversion; Laboratories; Masers; NIST; Nitrogen; Optical design; Temperature dependence; Testing; Uncertainty;
fLanguage
English
Publisher
ieee
Conference_Titel
Frequency Control Symposium, 2009 Joint with the 22nd European Frequency and Time forum. IEEE International
Conference_Location
Besancon
ISSN
1075-6787
Print_ISBN
978-1-4244-3511-1
Electronic_ISBN
1075-6787
Type
conf
DOI
10.1109/FREQ.2009.5168289
Filename
5168289
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