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

Aghion, S; Ahlén, O; Amsler, Claude; Ariga, Akitaka; Ariga, Tomoko; Belov, A S; Bonomi, G; Bräunig, P; Bremer, J; Brusa, R S; Cabaret, L; Canali, C; Caravita, R; Castelli, F; Cerchiari, G; Cialdi, S; Comparat, D; Consolati, G; Derking, J H; Domizio, S Di; ... (2013). Prospects for measuring the gravitational free-fall of antihydrogen with emulsion detectors. Journal of instrumentation, 8(08), P08013-P08013. Institute of Physics Publishing IOP 10.1088/1748-0221/8/08/P08013

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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 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 Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)

UniBE Contributor:

Amsler, Claude; Ariga, Tomoko; Ariga, Tomoko; Ereditato, Antonio; Kawada, Jiro; Kimura, Mitsuhiro; Pistillo, Ciro; Scampoli, Paola and Storey, James William

Subjects:

500 Science > 530 Physics

ISSN:

1748-0221

Publisher:

Institute of Physics Publishing IOP

Language:

English

Submitter:

Elena Kirillova

Date Deposited:

25 Sep 2014 09:51

Last Modified:

26 Jun 2016 01:51

Publisher DOI:

10.1088/1748-0221/8/08/P08013

Web of Science ID:

000324017400018

ArXiv ID:

1306.5602v1

BORIS DOI:

10.7892/boris.48856

URI:

https://boris.unibe.ch/id/eprint/48856

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