CERN Accelerating science

Article
Title The GBAR antimatter gravity experiment
Author(s) Pérez, P (IRFU, SPhN, Saclay) ; Banerjee, D (Zurich, ETH) ; Biraben, F (Paris, Lab. Kastler Brossel) ; Brook-Roberge, D (IRFU, SPhN, Saclay) ; Charlton, M (Swansea U.) ; Cladé, P (Paris, Lab. Kastler Brossel) ; Comini, P (IRFU, SPhN, Saclay) ; Crivelli, P (Zurich, ETH) ; Dalkarov, O (Lebedev Inst.) ; Debu, P (IRFU, SPhN, Saclay) ; Douillet, A (Paris, Lab. Kastler Brossel) ; Dufour, G (Paris, Lab. Kastler Brossel) ; Dupré, P (CSNSM, Orsay) ; Eriksson, S (Swansea U.) ; Froelich, P (Uppsala U.) ; Grandemange, P (CSNSM, Orsay) ; Guellati, S (Paris, Lab. Kastler Brossel) ; Guérout, R (Paris, Lab. Kastler Brossel) ; Heinrich, J M (Paris, Lab. Kastler Brossel) ; Hervieux, P A (IPCMS, Strasbourg) ; Hilico, L (Paris, Lab. Kastler Brossel) ; Husson, A (CSNSM, Orsay) ; Indelicato, P (Paris, Lab. Kastler Brossel) ; Jonsell, S (Stockholm U.) ; Karr, J P (Paris, Lab. Kastler Brossel) ; Khabarova, K (Lebedev Inst.) ; Kolachevsky, N (Lebedev Inst.) ; Kuroda, N (Tokyo U., Komaba) ; Lambrecht, A (Paris, Lab. Kastler Brossel) ; Leite, A M M (IRFU, SPhN, Saclay) ; Liszkay, L (IRFU, SPhN, Saclay) ; Lunney, D (CSNSM, Orsay) ; Madsen, N (Swansea U.) ; Manfredi, G (IPCMS, Strasbourg) ; Mansoulié, B (IRFU, SPhN, Saclay) ; Matsuda, Y (Tokyo U., Komaba) ; Mohri, A (Kyoto U., HES Grad. Sch.) ; Mortensen, T (CSNSM, Orsay) ; Nagashima, Y (Tokyo U. of Sci.) ; Nesvizhevsky, V (Laue-Langevin Inst.) ; Nez, F (Paris, Lab. Kastler Brossel) ; Regenfus, C (Zurich, ETH) ; Rey, J M (IRFU, SPhN, Saclay) ; Reymond, J M (IRFU, SPhN, Saclay) ; Reynaud, S (Paris, Lab. Kastler Brossel) ; Rubbia, A (Zurich, ETH) ; Sacquin, Y (IRFU, SPhN, Saclay) ; Schmidt-Kaler, F (Mainz U.) ; Sillitoe, N (Paris, Lab. Kastler Brossel) ; Staszczak, M (NCBJ, Swierk) ; Szabo-Foster, C I (Paris, Lab. Kastler Brossel) ; Torii, H (Tokyo U., Komaba) ; Vallage, B (IRFU, SPhN, Saclay) ; Valdes, M (IPCMS, Strasbourg) ; Werf, D P (Swansea U.) ; Voronin, A (Lebedev Inst.) ; Walz, J (Mainz U.) ; Wolf, S (Mainz U.) ; Wronka, S (NCBJ, Swierk) ; Yamazaki, Y (Wako, RIKEN)
Publication 2015
Number of pages 7
In: Hyperfine Interact. 233 (2015) 21-27
In: 5th International Conference on Exotic Atoms and Related Topics, Vienna, Austria, 15 - 19 Sep 2014, pp.21-27
DOI 10.1007/s10751-015-1154-8
Subject category General Relativity and Cosmology
Accelerator/Facility, Experiment CERN AD ; GBAR AD-7
Abstract The GBAR project (Gravitational Behaviour of Anti hydrogen at Rest) at CERN, aims to measure the free fall acceleration of ultracold neutral anti hydrogen atoms in the terrestrial gravitational field. The experiment consists preparing anti hydrogen ions (one antiproton and two positrons) and sympathetically cooling them with Be$^{+}$ ions to less than 10 μK. The ultracold ions will then be photo-ionized just above threshold, and the free fall time over a known distance measured. We will describe the project, the accuracy that can be reached by standard techniques, and discuss a possible improvement to reduce the vertical velocity spread.

Corresponding record in: Inspire
 Záznam vytvorený 2015-09-29, zmenený 2017-07-31