Abstract
The AEḡIS experiment (Antimatter Experiment: Gravity, Interferometry, Spectroscopy (Drobychev et al., 2007)), aims at directly measuring the gravitational acceleration g on a beam of cold antihydrogen (\(\overline{\rm H}\)). After production, the \(\overline{\rm H}\) atoms will be driven to fly horizontally with a velocity of a few 100 m/s for a path length of about 1 meter. The small deflection, few tens of μm, will be measured using two material gratings coupled to a position-sensitive detector working as a Moiré deflectometer similarly to what has been done with atoms (Oberthaler et al., Phys Rev A 54:3165, 1996). Details about the detection of the \(\overline{\rm H}\) annihilation point at the end of the flight path with a position-sensitive microstrip detector and a silicon tracker system will be discussed.
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References
Drobychev, G., et al.: CERN-SPSC-2007-017. http://cdsweb.cern.ch/record/1037532 (2007)
Oberthaler, M.K., et al.: Phys. Rev. A 54, 3165 (1996)
Tasson, J.D.: Gravitational physics with antimatter. In: These Proceedings
Murphy, T.J., Surko, C.M.: Phys. Rev. A 46, 5696 (1992)
Gabrielse, G., et al.: Phys. Lett. B 548, 140 (2002)
Jorgensen, L.V., et al.: Phys. Rev. Lett. 95, 025002 (2005)
Holzscheiter, M.H., Charlton, M.: Rep. Prog. Phys. 62, 1–60 (1999)
Gabrielse, G., Rolston, S., Haarsma, L., Kells, W.: Phys. Lett. A 129, 38 (1988)
Storry, C., et al.: Phys. Rev. Lett. 93, 263401 (2004)
Charlton, M.: Phys. Lett. A 143, 143 (1990)
Gidley, D.W., et al.: Annu. Rev. Mater. Res. 36, 49 (2006)
Giammarchi, M.G.: Efficient Rydberg positronium laser excitation for antihydrogen production in a magnetic field. In: These Proceedings
Vliegen, E., Merkt, F.: J. Phys. B 39, L241 (2006)
Vliegen, E., et al.: Phys. Rev. A 76, 023405 (2007)
Testera, G., et al.: In: Proceeding of Cold Antimatter Plasmas and Application to Fundamental Physics Conference, AIP Conference Proceedings, vol. 1037, p. 5 (2008)
Bendiscioli, G., Kharzeev, D.: Riv. Nuovo Cim. 17(N. 6), 1–142 (1994)
McGaughey, P.L., et al.: Nucl. Instrum. Meth. A 249, 361 (1986)
Straulino, S., et al.: Nucl. Instrum. Meth. A 556, 100 (2006)
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AEḡIS proto-collaboration: A. S. Belov, I. Boscolo, N. Brambilla, R. S. Brusa, V. M. Byakov, L. Cabaret, C. Canali, C. Carraro, F. Castelli, S. Cialdi, M. de Combarieu, D. Comparat, G. Consolati, N. Djourelov, M. Doser, G. Drobychev, A. Dupasquier, D. Fabris, R. Ferragut, G. Ferrari, A. Fischer, A. Fontana, P. Forget, L. Formaro, M. G. Giammarchi, M. Lunardon, A. Gervasini, S. N. Gninenko, G. Gribakin, R. Heyne, A. Kellerbauer, D. Krasnicky, V. Lagomarsino, G. Manuzio, S. Mariazzi, V. A. Matveev, S. Moretto, C. Morhard, G. Nebbia, P. Nedelec, M. K. Oberthaler, P. Pari, V. Petracek, M. Prevedelli, I. Y. Al-Qaradawi, F. Quasso, O. Rohne, S. Pesente, A. Rotondi, S. Stapnes, D. Sillou, S. V. Stepanov, H. H. Stroke, G. Testera, G. M. Tino, A. Vairo, G. Viesti, F. Villa, H. Walters, U. Warring, S. Zavatarelli, A. Zenoni, D. S. Zvezhinskij.
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Bonomi, G., AEḡIS proto-collaboration. Measuring the antihydrogen fall. Hyperfine Interact 193, 297–303 (2009). https://doi.org/10.1007/s10751-009-0015-8
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DOI: https://doi.org/10.1007/s10751-009-0015-8