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- Title
Measuring the antihydrogen fall.
- Authors
Bonomi, G.
- Abstract
The AEḡIS experiment ( Antimatter Experiment: Gravity, Interferometry, Spectroscopy (Drobychev et al., )), aims at directly measuring the gravitational acceleration g on a beam of cold antihydrogen ( $\overline{\rm H}$). After production, the $\overline{\rm H}$ atoms will be driven to fly horizontally with a velocity of a few 100 m/s for a path length of about 1 meter. The small deflection, few tens of μm, will be measured using two material gratings coupled to a position-sensitive detector working as a Moiré deflectometer similarly to what has been done with atoms (Oberthaler et al., Phys Rev A 54:3165, ). Details about the detection of the $\overline{\rm H}$ annihilation point at the end of the flight path with a position-sensitive microstrip detector and a silicon tracker system will be discussed.
- Subjects
HYDROGEN; STEREOCHEMISTRY; CONSTITUTION of matter; DETECTORS; ATOMS
- Publication
Hyperfine Interactions, 2009, Vol 193, Issue 1-3, p297
- ISSN
0304-3843
- Publication type
Article
- DOI
10.1007/s10751-009-0015-8