Development of nuclear emulsions operating in vacuum for the AEgIS experiment

Scampoli, Paola; Aghion, S.; Ahl?n, O.; Amsler, C.; Ariga, A.; Ariga, T.; Belov, A. S.; Berggren, K.; Bonomi, G.; Br?unig, 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.; J?rgensen, L. V.; Kaltenbacher, T.; Kawada, J.; Kellerbauer, A.; Kimura, M.; Knecht, A.; Krasnick?, D.; Lagomarsino, V.; Lehner, S.; Malbrunot, C.; Mariazzi, S.; Matveev, V. A.; Moia, F.; Nebbia, G.; N?d?lec, P.; Oberthaler, M. K.; Pacifico, N.; Petr??ek, V.; Pistillo, C.; Prelz, F.; Prevedelli, M.; Regenfus, C.; Riccardi, C.; R?hne, O.; Rotondi, A.; Sandaker, H.; Storey, J.; Subieta Vasquez, M. A.; ?pa?ek, M.; Testera, G.; Wildmann, E.; Zavatarelli, S.; Zmeskal, J.

doi:10.1088/1748-0221/9/01/C01061

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.

Development of nuclear emulsions operating in vacuum for the AEgIS experiment / Scampoli, Paola; S., Aghion; O., Ahl?n; C., Amsler; A., Ariga; T., Ariga; A. S., Belov; K., Berggren; G., Bonomi; P., Br?unig; J., Bremer; R. S., Brusa; L., Cabaret; M., Caccia; C., Canali; R., Caravita; F., Castelli; G., Cerchiari; S., Cialdi; D., Comparat; G., Consolati; H., Derking; S., Di Domizio; L., Di Noto; M., Doser; A., Dudarev; A., Ereditato; R., Ferragut; A., Fontana; P., Genova; M., Giammarchi; A., Gligorova; S. N., Gninenko; S., Haider; T., Huse; E., Jordan; L. V., J?rgensen; T., Kaltenbacher; J., Kawada; A., Kellerbauer; M., Kimura; A., Knecht; D., Krasnick?; V., Lagomarsino; S., Lehner; C., Malbrunot; S., Mariazzi; V. A., Matveev; F., Moia; G., Nebbia; P., N?d?lec; M. K., Oberthaler; N., Pacifico; V., Petr??ek; C., Pistillo; F., Prelz; M., Prevedelli; C., Regenfus; C., Riccardi; O., R?hne; A., Rotondi; H., Sandaker; J., Storey; M. A., Subieta Vasquez; M., ?pa?ek; G., Testera; E., Wildmann; S., Zavatarelli; J., Zmeskal. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 9:(2014), pp. C01061-C01061. [10.1088/1748-0221/9/01/C01061]