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 g for antihydrogen with an initial relativ...

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Detalles Bibliográficos
Autores principales: Aghion, S., Ahlén, O., Amsler, C., Ariga, A., Ariga, T., 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., Di Domizio, S., Di Noto, L., Doser, M., Dudarev, A., Ereditato, A., Ferragut, R., Fontana, A., Genova, P., Giammarchi, M., Gligorova, A., Gninenko, S.N., Haider, S., Harasimovicz, J., Hogan, S.D., Huse, T., Jordan, E., Jørgensen, L.V., Kaltenbacher, T., Kawada, J., Kellerbauer, A., Kimura, M., Knecht, A., Krasnický, D., Lagomarsino, V., Magnani, A., Mariazzi, S., Matveev, V.A., Moia, F., Nebbia, G., Nédélec, P., Oberthaler, M.K., Pacifico, N., Petráček, V., Pistillo, C., Prelz, F., Prevedelli, M., Regenfus, C., Riccardi, C., Røhne, O., Rotondi, A., Sandaker, H., Scampoli, P., Sosa, A., Storey, J., Subieta Vasquez, M.A., Špaček, M., Testera, G., Trezzi, D., Vaccarone, R., Welsch, C.P., Zavatarelli, S.
Lenguaje:eng
Publicado: 2013
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/8/08/P08013
http://cds.cern.ch/record/1557671
Descripción
Sumario: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 g for antihydrogen with an initial relative accuracy of 1% by using an emulsion detector combined with a silicon micro-strip detector to measure the time of flight. Nuclear emulsions can measure the annihilation vertex of antihydrogen atoms with a precision of about 1 - 2 microns 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.

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