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Prospects for measuring the gravitational free-fall of antihydrogen with emulsion detectors

The main goal of the AEgIS experiment at CERN is to test the weak equivalence principle for antimatter. AEgIS will measure the free-fall of an antihydrogen beam traversing a moir'e deflectometer. The goal is to determine the gravitational acceleration ḡ with an initial relative accuracy of 1%...

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Bibliographic Details
Main Authors: Aghion, Stefano (Author) , Bräunig, Philippe (Author) , Jordan, Elena (Author) , Kellerbauer, Alban (Author) , Oberthaler, Markus K. (Author)
Corporate Author: AEgIS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: August 27, 2013
In: Journal of Instrumentation
Year: 2013, Volume: 8, Issue: 08, Pages: 1-18
ISSN:1748-0221
DOI:10.1088/1748-0221/8/08/P08013
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1088/1748-0221/8/08/P08013
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Author Notes:S. Aghion, P. Bräunig, E. Jordan, A. Kellerbauer, M.K. Oberthaler, und weitere 65
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Summary:The main goal of the AEgIS experiment at CERN is to test the weak equivalence principle for antimatter. AEgIS will measure the free-fall of an antihydrogen beam traversing a moir'e deflectometer. The goal is to determine the gravitational acceleration ḡ with an initial relative accuracy of 1% by using an emulsion detector combined with a silicon μ-strip detector to measure the time of flight. Nuclear emulsions can measure the annihilation vertex of antihydrogen atoms with a precision of ∼ 1-2 μm r.m.s. We present here results for emulsion detectors operated in vacuum using low energy antiprotons from the CERN antiproton decelerator. We compare with Monte Carlo simulations, and discuss the impact on the AEgIS project.
Item Description:Gesehen am 06.05.2021
Physical Description:Online Resource
ISSN:1748-0221
DOI:10.1088/1748-0221/8/08/P08013

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