A new application of emulsions to measure the gravitational force on antihydrogen

Amsler, Claude; Ariga, Akitaka; Ariga, Tomoko; Braccini, Saverio; Canali, C; Ereditato, Antonio; Kawada, Jiro; Kimura, Mitsuhiro; Kreslo, Igor; Pistillo, Ciro; Scampoli, Paola; Storey, James William (2013). A new application of emulsions to measure the gravitational force on antihydrogen. Journal of instrumentation, 8(02), P02015-P02015. Institute of Physics Publishing IOP 10.1088/1748-0221/8/02/P02015

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We propose to build and operate a detector based on the emulsion film technology for the measurement of the gravitational acceleration on antimatter, to be performed by the AEgIS experiment (AD6) at CERN. The goal of AEgIS is to test the weak equivalence principle with a precision of 1% on the gravitational acceleration g by measuring the vertical position of the annihilation vertex of antihydrogen atoms after their free fall while moving horizontally in a vacuum pipe. With the emulsion technology developed at the University of Bern we propose to improve the performance of AEgIS by exploiting the superior position resolution of emulsion films over other particle detectors. The idea is to use a new type of emulsion films, especially developed for applications in vacuum, to yield a spatial resolution of the order of one micron in the measurement of the sag of the antihydrogen atoms in the gravitational field. This is an order of magnitude better than what was planned in the original AEgIS proposal.

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, Akitaka; Ariga, Tomoko; Braccini, Saverio; Ereditato, Antonio; Kawada, Jiro; Kimura, Mitsuhiro; Kreslo, Igor; 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:

19 Sep 2014 15:18

Last Modified:

08 Oct 2015 09:46

Publisher DOI:

10.1088/1748-0221/8/02/P02015

Web of Science ID:

000315672700071

BORIS DOI:

10.7892/boris.49485

URI:

https://boris.unibe.ch/id/eprint/49485

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