000030631 001__ 30631
000030631 005__ 20150420164426.0
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000030631 041__ $$aeng
000030631 080__ $$a53
000030631 100__ $$aGiordano, Vincent$$uCNRS FEMTO-ST Institute, Time and Frequency Department, 25030 Besançon, France
000030631 245__ $$9eng$$aNew-generation cryogenic sapphire microwave oscillators for space, metrology and scientific applications
000030631 520__ $$9eng$$aThis 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<sup>-16</sup> for 30 s ≤ <i>τ</i> ≤ 300 s integration time, and 4.5 × 10<sup>-15</sup> at 1 day (1 × 10<sup>-14</sup> 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 m<sup>2</sup> 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.
000030631 700__ $$aGrop, Serge$$u2ULISS-ST, SAIC Université de Franche-Comté, Témis Sciences, 25000 Besançon, France
000030631 700__ $$aDubois, Benoît$$u2ULISS-ST, SAIC Université de Franche-Comté, Témis Sciences, 25000 Besançon, France
000030631 700__ $$aBourgeois, Pierre-Yves$$uCNRS FEMTO-ST Institute, Time and Frequency Department, 25030 Besançon, France
000030631 700__ $$aKersalé, Yann$$uCNRS FEMTO-ST Institute, Time and Frequency Department, 25030 Besançon, France
000030631 700__ $$aHaye, Gregory$$uCNRS FEMTO-ST Institute, Time and Frequency Department, 25030 Besançon, France
000030631 700__ $$aDolgovskiy, Vladimir$$uLaboratoire Temps-Fréquence, Institut de Physique, Faculté des Sciences, Université de Neuchâtel, Switzerland
000030631 700__ $$aBucalovic, Nikola$$uLaboratoire Temps-Fréquence, Institut de Physique, Faculté des Sciences, Université de Neuchâtel, Switzerland
000030631 700__ $$aDi Domenico, Gianni$$uLTF Laboratoire Temps-Fréquence, Institut de Physique, Université de Neuchâtel, Switzerland
000030631 700__ $$aSchilt, Stéphane$$uLTF Laboratoire Temps-Fréquence, Institut de Physique, Université de Neuchâtel, Switzerland
000030631 700__ $$aChauvin, Jacques$$uOscilloquartz SA, Neuchâtel, Switzerland
000030631 700__ $$aValat, David$$uCentre National d’Etudes Spatiales (CNES), 31400 Toulouse, France
000030631 700__ $$aRubiola, Enrico$$uCNRS FEMTO-ST Institute, Time and Frequency Department, 25030 Besançon, France
000030631 773__ $$g2012/83/8/085113/1-6$$tReview of Scientific Instruments
000030631 775__ $$gPublished Version$$ohttp://dx.doi.org/10.1063/1.4747456
000030631 8564_ $$fGiordano_Vincent-New-generation_of_cryogenic_sapphire_20121116.pdf$$qapplication/pdf$$s1059665$$uhttp://doc.rero.ch/record/30631/files/Giordano_Vincent-New-generation_of_cryogenic_sapphire_20121116.pdf$$yorder:1$$zTexte intégral
000030631 918__ $$aFaculté des sciences$$bRue Emile-Argand 11, 2007 Neuchâtel
000030631 919__ $$aUniversité de Neuchâtel$$bNeuchâtel$$ddoc.support@rero.ch
000030631 980__ $$aPOSTPRINT$$bUNINE$$fART_JOURNAL
000030631 990__ $$a20121116115213-TA