Rubidium-Fountain Characterization Using the USNO Clock Ensemble

reportActive / Technical Report | Accession Number: ADA477304 | Open PDF

Abstract:

We have carried out stability comparisons between our rubidium fountain, built as a prototype for a continuously operating clock, and the USNO Maser Mean timescale. Long, continuous runs of the prototype system allow us to demonstrate fractional frequency-stability comparisons to the Maser Mean that integrate as white frequency noise, with a stability of 5 10exp -16 at one day. We have measured the frequency sensitivity of the rubidium fountain to various experimental parameters in order to establish the regulation required to reach a long-term stability of order 1 10exp -16.

Author(s):
Peil, Steven ; Crane, Scott ; Swanson, Thomas B. ; Ekstrom, Christopher R.
Author Organization(s):
NAVAL OBSERVATORY WASHINGTON DC
Descriptive Note:
Conference paper
Supplementary Note:
Presented at the Frequency Control Symposium, in cooperation with the European Frequency and Time Forum (21st), held in Geneva, Switzerland, on 29 May-1 Jun 2007. Published in IEEE International, p473-476, 2007.
Pagination:
0005

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
NOBS
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning
Modernization Areas:
Microelectronics
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*FREQUENCY, *STABILITY, *CLOCKS, *COMPARISON, MEASUREMENT, SYMPOSIA, WHITE NOISE, PROTOTYPES, SCALE, MEAN, CONTINUITY, MASERS, RUBIDIUM, FREQUENCY SHIFT, FRACTIONATION
Field(s)/Group(s):
Test Facilities, Equipment and Methods, Radiofrequency Wave Propagation
Keyword(s):
*RUBIDIUM FOUNTAINS, MASER MEAN, TIMESCALE
Report Date:
2007 May 01
Creation Date:
2008 Mar 12