D. Drapier

An Al$^+$ clock with $1.6\times10^{-18}$ systematic uncertainty and its frequency ratios

Fabian Dawel, Johannes Krämer, D. Drapier, Lennart Pelzer et autres

Advances in optical clocks motivate a redefinition of the second, requiring rigorous evaluations of systematic uncertainties and robust consistency among the clocks. Here, we report the full evaluation of the systematic frequency shifts of an $^{27}\mathrm{Al}^+$ single-ion clock, and the measurement of …

Incoherent repumping scheme in the Sr + 88 five-level manifold

V. Martimort, Sacha Guesne, D. Drapier, Vincent Tugayé et autres

International audience

fr, us (code pays fourni par la source)

AD-7/GBAR status report for the 2026 CERN SPSC

P Adrich, I. Belosevic, M. Chung, P Cladé et autres

We review the 2025 activities of the GBAR experiment and its plans for 2026. 2025 was mainly dedicated to the finalisation of the 2024 data analysis, with a cross section for antihydrogen production measured at a 20 % precision, and to the …

pl, fr, kr, ch, ca, se, jp, de, gb (code pays fourni par la source)

News from the GBAR experiment: Improved positron accumulation in a buffer gas trap with a silicon carbide remoderator

Laszlo Liszkay, P. Adrich, I. Belošević, P.J. Blumer et autres

Abstract The aim of the GBAR experiment is to measure the gravitational acceleration of antihydrogen by observing the free fall of ultracold anti-atoms. The experiment is installed at CERN’s Antiproton Decelerator/ELENA facility. Positrons are produced by a low energy (9 MeV) linear …

fr (code pays fourni par la source)

Erratum to: Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud

P. Adrich, P. Blumer, G. Caratsch, М. Chung et autres

International audience

pl, ch, kr, fr, se, jp, de, gb (code pays fourni par la source)

Sympathetic cooling of a 9Be+ ion by a Coulomb crystal of 88Sr+ ions : a test bed for taming antimatter ions (GBAR experiment)

D. Drapier

L'expérience GBAR (Gravitational Behaviour of Antihydrogne at Rest) installée au CERN qui vise à mesurer l'effet de la force gravitationnelle exercée par la matière (la terre) sur l'antimatière (un atome d'antihydrogène) en étudiant la chute libre d'un atome d'antihydrogène préparé au repos. …

fr (code pays fourni par la source)

Refroidissement sympathique d’un ion 9Be+ par un cristal de Coulomb d’ions 88Sr+ : un banc d’essai pour apprivoiser les ions d’antimatière (expérience GBAR)

D. Drapier

L'expérience GBAR (Gravitational Behaviour of Antihydrogne at Rest) installée au CERN qui vise à mesurer l'effet de la force gravitationnelle exercée par la matière (la terre) sur l'antimatière (un atome d'antihydrogène) en étudiant la chute libre d'un atome d'antihydrogène préparé au repos. …

fr (code pays fourni par la source)

Sympathetic cooling of a Be+ ion by a Coulomb crystal of Sr+ ions: a test bed for taming antimatter ions (GBAR)

A. Douillet, D. Drapier, Jean‐Philippe Karr, J.-P. Likforman et autres

International audience

fr (code pays fourni par la source)

Publisher Erratum: Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud

P. Adrich, P. Blumer, G. Caratsch, М. Chung et autres

We report on the first production of an antihydrogen beam by charge exchange of 6.1 keV antiprotons with a cloud of positronium in the GBAR experiment at CERN.The antiproton beam was delivered by the AD/ELENA facility.The positronium target was produced from a …

pl, ch, kr, fr, se, jp, de, gb (code pays fourni par la source)

Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud

P. Adrich, Philipp Blumer, G. Caratsch, М. Chung et autres

Abstract We report on the first production of an antihydrogen beam by charge exchange of 6.1 keV antiprotons with a cloud of positronium in the GBAR experiment at CERN. The 100 keV antiproton beam delivered by the AD/ELENA facility was further decelerated …

pl, ch, kr, fr, se, jp, de, gb (code pays fourni par la source)

AD-7/GBAR status report for the 2023 CERN SPSC

David Lunney, C Roumegou, P Blumer, G Caratsch et autres

We report on the activities performed during 2022 and the plans for 2023 for the GBAR experiment.

fr, ch, ca, de, gb, se, kr, jp, pl (code pays fourni par la source)