Published August 2015
| Version v1
Journal article
The GBAR antimatter gravity experiment
Creators
- 1. Institut de Recherches sur les lois Fondamentales de l'Univers (France)
- 2. Institute for Particle Physics, ETH Zürich (Switzerland)
- 3. UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Laboratoire Kastler Brossel, Collège de France (France)
- 4. Swansea University, Department of Physics (United Kingdom)
- 5. P. N. Lebedev Physical Institute (Russian Federation)
- 6. Université d'Evry Val d'Essonne, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Laboratoire Kastler Brossel, Collége de France (France)
Description
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
Additional details
Identifiers
Publishing Information
- Journal Title
- Hyperfine Interactions
- Journal Volume
- 233
- Journal Issue
- 1-3
- Journal Page Range
- p. 21-27
- ISSN
- 0304-3843
- CODEN
- HYINDN
Conference
- Title
- International conference on exotic atoms and related topics
- Acronym
- EXA 2014
- Dates
- 15-19 Sep 2014
- Place
- Vienna (Austria)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 47037104
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ACCELERATION; ACCURACY; ANTIPROTONS; ATOMS; BERYLLIUM IONS; CERN; COOLING; EXPERIMENT PLANNING; GRAVITATIONAL FIELDS; HYDROGEN; HYDROGEN IONS; PHOTOIONIZATION; POSITRONS
- Descriptors DEC
- ANTIBARYONS; ANTILEPTONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYONS; CHARGED PARTICLES; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; HADRONS; INTERNATIONAL ORGANIZATIONS; IONIZATION; IONS; LEPTONS; MATTER; NONMETALS; NUCLEI; NUCLEONS; PLANNING; PROTONS
Optional Information
- Copyright
- Copyright (c) 2015 Springer International Publishing Switzerland