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Atomic Clock Ensemble in Space: Scientific Objectives and Mission Status

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Title: Atomic Clock Ensemble in Space: Scientific Objectives and Mission Status
Authors: Cacciapuoti, L.1 Luigi.Cacciapuoti@esa.int, Dimarcq, N.2, Santarelli, G.2, Laurent, P.2, Lemonde, P.2, Clairon, A.2, Berthoud, P.3, Jornod, A.3, Reina, F.1, Feltham, S.1, Salomon, C.4
Source: Nuclear Physics B Proceedings Supplement. Apr2007, Vol. 166 Issue 1, p303-306. 4p.
Subjects: Optical instruments, Metaphysical cosmology, Nuclear physics, International Space Station
Abstract: Atomic Clock Ensemble in Space (ACES) is a mission in fundamental physics that will operate a new generation of atomic clocks in the microgravity environment of the International Space Station. Fractional frequency instability and inaccuracy at the 10−16 level will be achieved. The on-board time base, distributed on Earth via a microwave link, will be used for space-to-ground as well as ground-to-ground comparisons of atomic frequency standards. Based on these comparisons, ACES will perform fundamental physics tests and develop applications in time and frequency metrology, universal time scales, global positioning and navigation, geodesy, and gravimetry. After a general overview of the mission concept and its scientific objectives, the present status of ACES instruments and sub-systems will be discussed. [Copyright &y& Elsevier]
Copyright of Nuclear Physics B Proceedings Supplement is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: Atomic Clock Ensemble in Space: Scientific Objectives and Mission Status
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  Data: <searchLink fieldCode="AR" term="%22Cacciapuoti%2C+L%2E%22">Cacciapuoti, L.</searchLink><relatesTo>1</relatesTo><i> Luigi.Cacciapuoti@esa.int</i><br /><searchLink fieldCode="AR" term="%22Dimarcq%2C+N%2E%22">Dimarcq, N.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Santarelli%2C+G%2E%22">Santarelli, G.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Laurent%2C+P%2E%22">Laurent, P.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Lemonde%2C+P%2E%22">Lemonde, P.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Clairon%2C+A%2E%22">Clairon, A.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Berthoud%2C+P%2E%22">Berthoud, P.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Jornod%2C+A%2E%22">Jornod, A.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Reina%2C+F%2E%22">Reina, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Feltham%2C+S%2E%22">Feltham, S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Salomon%2C+C%2E%22">Salomon, C.</searchLink><relatesTo>4</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Physics+B++Proceedings+Supplement%22">Nuclear Physics B Proceedings Supplement</searchLink>. Apr2007, Vol. 166 Issue 1, p303-306. 4p.
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  Data: Atomic Clock Ensemble in Space (ACES) is a mission in fundamental physics that will operate a new generation of atomic clocks in the microgravity environment of the International Space Station. Fractional frequency instability and inaccuracy at the 10−16 level will be achieved. The on-board time base, distributed on Earth via a microwave link, will be used for space-to-ground as well as ground-to-ground comparisons of atomic frequency standards. Based on these comparisons, ACES will perform fundamental physics tests and develop applications in time and frequency metrology, universal time scales, global positioning and navigation, geodesy, and gravimetry. After a general overview of the mission concept and its scientific objectives, the present status of ACES instruments and sub-systems will be discussed. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Nuclear Physics B Proceedings Supplement is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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