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New Generation of Cryogenic Sapphire Microwave Oscillator for Space, Metrology and Scientific Applications
- Source :
- Review of Scientific Instruments, Review of Scientific Instruments, American Institute of Physics, 2012, 83, pp.085113. ⟨10.1063/1.4747456⟩, REVIEW OF SCIENTIFIC INSTRUMENTS
- Publication Year :
- 2012
- Publisher :
- HAL CCSD, 2012.
-
Abstract
- International audience; This article reports on the characterization of cryogenic sapphire oscillators (CSOs), and on the first test of a CSO in a real field installation, where ultimate frequency stability and continuous operation are critical issues, with no survey. Thanks to low-vibration liquid-He cryocooler design, Internet monitoring, and a significant effort of engineering, these oscillators could bridge the gap from an experiment to a fully reliable machine. The cryocooler needs scheduled maintenance every 2 years, which is usual for these devices. The direct comparison of two CSOs demonstrates a frequency stability of 5 × 10−16 for 30 s ≤ τ ≤ 300 s integration time, and 4.5 × 10−15 at 1 day (1 × 10−14 typical). Two prototypes are fully operational, codenamed ELISA and ULISS. ELISA has been permanently installed the new deep space antenna station of the European Space Agency in Malargüe, Argentina, in May 2012. ULISS is a transportable version of ELISA, modified to fit in a small van (8.5 m2 footprint). Installation requires a few hours manpower and 1 day of operation to attain full stability. ULISS, intended for off-site experiments and as a technology demonstrator, and has successfully completed two long-distance travels.
- Subjects :
- Time delay and integration
Computer science
business.industry
Continuous operation
Electrical engineering
NASA Deep Space Network
Cryocooler
Space (mathematics)
7. Clean energy
01 natural sciences
Metrology
[SPI.TRON]Engineering Sciences [physics]/Electronics
Optics
0103 physical sciences
Sapphire
Antenna (radio)
010306 general physics
business
010301 acoustics
Instrumentation
Subjects
Details
- Language :
- English
- ISSN :
- 00346748 and 10897623
- Database :
- OpenAIRE
- Journal :
- Review of Scientific Instruments, Review of Scientific Instruments, American Institute of Physics, 2012, 83, pp.085113. ⟨10.1063/1.4747456⟩, REVIEW OF SCIENTIFIC INSTRUMENTS
- Accession number :
- edsair.doi.dedup.....529eb504910950da907a698511e6a0a5