Development of nuclear emulsions operating in vacuum for the AEgIS experiment

For the first time the AEgIS (Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy) experiment will measure the Earth's local gravitational acceleration g on antimatter through the evaluation of the vertical displacement of an antihydrogen horizontal beam. This will be a model indepen...

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Detalles Bibliográficos
Autores principales: Scampoli, P, Aghion, S, Ahlen, O, Amsler, C, Ariga, A, Ariga, T, Belov, A S, Berggren, K, Bonomi, G, Bräunig, P, Bremer, J, Brusa, R S, Cabaret, L, Caccia, M, Canali, C, Caravita, R, Castelli, F, Cerchiari, G, Cialdi, S, Comparat, D, Consolati, G, Derking, 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, Huse, T, Jordan, E, Jørgensen, L V, Kaltenbacher, T, Kawada, J, Kellerbauer, A, Kimura, M, Knecht, A, Krasnicky, D, Lagomarsino, V, Lehner, S, Malbrunot, C, Mariazzi, S, Matveev, V A, Moia, F, Nebbia, G, Nedelec, P, Oberthaler, M K, Pacifico, N, Petracek, V, Pistillo, C, Prelz, F, Prevedelli, M, Regenfus, C, Riccardi, C, Røhne, O, Rotondi, A, Sandaker, H, Storey, J, Subieta Vasquez, M A, Spacek, M, Testera, G, Wildmann, E, Zavatarelli, S, Zmeskal, J
Lenguaje:eng
Publicado: 2014
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/9/01/C01061
http://cds.cern.ch/record/2110686
Descripción
Sumario:For the first time the AEgIS (Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy) experiment will measure the Earth's local gravitational acceleration g on antimatter through the evaluation of the vertical displacement of an antihydrogen horizontal beam. This will be a model independent test of the Weak Equivalence Principle at the base of the general relativity. The initial goal of a g measurement with a relative uncertainty of 1% will be achieved with less than 1000 detected antihydrogens, provided that their vertical position could be determined with a precision of a few micrometers. An emulsion based detector is very suitable for this purpose featuring an intrinsic sub-micrometric spatial resolution. Nevertheless, the AEgIS experiment requires unprecedented operational conditions for this type of detector, namely vacuum environment and very low temperature. An intense R&D; activity is presently going on to optimize the detector for the AEgIS experimental requirements with rather encouraging results.

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