Atomic Clock Ensemble in Space

Fuente: arXiv

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Bibliographic Details
Main Authors:	Cacciapuoti, L., Busso, A., Jansen, R., Pataraia, S., Peignier, T., Weinberg, S., Crescence, P., Helm, A., Kehrer, J., Koller, S., Lachaud, R., Niedermaier, T., Esnault, F. -X., Massonnet, D., Goujon, D., Pittet, J., Perri, A., Wang, Q., Liu, S., Schaefer, W., Schwall, T., Prochazka, I., Schlicht, A., Schreiber, U., Laurent, P., Lilley, M., Wolf, P., Salomon, C.
Format:	Preprint
Published:	2024
Subjects:	General Relativity and Quantum Cosmology Instrumentation and Methods for Astrophysics Instrumentation and Detectors
Online Access:	Acceder al recurso
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_version_	1866910685591502848
author	Cacciapuoti, L. Busso, A. Jansen, R. Pataraia, S. Peignier, T. Weinberg, S. Crescence, P. Helm, A. Kehrer, J. Koller, S. Lachaud, R. Niedermaier, T. Esnault, F. -X. Massonnet, D. Goujon, D. Pittet, J. Perri, A. Wang, Q. Liu, S. Schaefer, W. Schwall, T. Prochazka, I. Schlicht, A. Schreiber, U. Laurent, P. Lilley, M. Wolf, P. Salomon, C.
author_facet	Cacciapuoti, L. Busso, A. Jansen, R. Pataraia, S. Peignier, T. Weinberg, S. Crescence, P. Helm, A. Kehrer, J. Koller, S. Lachaud, R. Niedermaier, T. Esnault, F. -X. Massonnet, D. Goujon, D. Pittet, J. Perri, A. Wang, Q. Liu, S. Schaefer, W. Schwall, T. Prochazka, I. Schlicht, A. Schreiber, U. Laurent, P. Lilley, M. Wolf, P. Salomon, C.
contents	The Atomic Clock Ensemble in Space (ACES) mission is developing high performance clocks and links for space to test Einstein's theory of general relativity. From the International Space Station, the ACES payload will distribute a clock signal with fractional frequency stability and accuracy of 1E-16 establishing a worldwide network to compare clocks in space and on the ground. ACES will provide an absolute measurement of Einstein's gravitational redshift, it will search for time variations of fundamental constants, contribute to test topological dark matter models, and perform Standard Model Extension tests. Moreover, the ground clocks connected to the ACES network will be compared over different continents and used to measure geopotential differences at the clock locations. After solving some technical problems, the ACES flight model is now approaching its completion. System tests involving the laser-cooled Cs clock PHARAO, the active H-maser SHM and the on-board frequency comparator FCDP have measured the performance of the clock signal delivered by ACES. The ACES microwave link MWL is currently under test. The single-photon avalanche detector of the optical link ELT has been tested and will now be integrated in the ACES payload. The ACES mission concept, its scientific objectives, and the recent test results are discussed here together with the major milestones that will lead us to the ACES launch.
format	Preprint
id	arxiv_https___arxiv_org_abs_2411_02912
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Atomic Clock Ensemble in Space Cacciapuoti, L. Busso, A. Jansen, R. Pataraia, S. Peignier, T. Weinberg, S. Crescence, P. Helm, A. Kehrer, J. Koller, S. Lachaud, R. Niedermaier, T. Esnault, F. -X. Massonnet, D. Goujon, D. Pittet, J. Perri, A. Wang, Q. Liu, S. Schaefer, W. Schwall, T. Prochazka, I. Schlicht, A. Schreiber, U. Laurent, P. Lilley, M. Wolf, P. Salomon, C. General Relativity and Quantum Cosmology Instrumentation and Methods for Astrophysics Instrumentation and Detectors The Atomic Clock Ensemble in Space (ACES) mission is developing high performance clocks and links for space to test Einstein's theory of general relativity. From the International Space Station, the ACES payload will distribute a clock signal with fractional frequency stability and accuracy of 1E-16 establishing a worldwide network to compare clocks in space and on the ground. ACES will provide an absolute measurement of Einstein's gravitational redshift, it will search for time variations of fundamental constants, contribute to test topological dark matter models, and perform Standard Model Extension tests. Moreover, the ground clocks connected to the ACES network will be compared over different continents and used to measure geopotential differences at the clock locations. After solving some technical problems, the ACES flight model is now approaching its completion. System tests involving the laser-cooled Cs clock PHARAO, the active H-maser SHM and the on-board frequency comparator FCDP have measured the performance of the clock signal delivered by ACES. The ACES microwave link MWL is currently under test. The single-photon avalanche detector of the optical link ELT has been tested and will now be integrated in the ACES payload. The ACES mission concept, its scientific objectives, and the recent test results are discussed here together with the major milestones that will lead us to the ACES launch.
title	Atomic Clock Ensemble in Space
topic	General Relativity and Quantum Cosmology Instrumentation and Methods for Astrophysics Instrumentation and Detectors
url	https://arxiv.org/abs/2411.02912