Positronium for Antihydrogen Production in the AEGIS Experiment

• DOI: 10.12693/aphyspola.132.1443
• Publication Date: 2017-12-07T03:06:57Z
• Authors: G. Consolati; S. Aghion; C. Amsler; G. Bonomi; R.S. Brusa; M. Caccia; R. Caravita; F. Castelli; G. Cerchiari; D. Comparat; A. Demetrio; L. Di Noto; M. Doser; C. Evans; M. Fanì; R. Ferragut; J. Fesel; A. Fontana; S. Gerber; M. Giammarchi; A. Gligorova; F. Guatieri; S. Haider; A. Hinterberger; H. Holmestad; A. Kellerbauer; O. Khalidova; D. Krasnicky; V. Lagomarsino; P. Lansonneur; P. Lebrun; C. Malbrunot; S. Mariazzi; J. Marton; V. Matveev; Z. Mazzotta; S.R. Müller; G. Nebbia; P. Nedelec; M. Oberthaler; N. Pacifico; D. Pagano; L. Penasa; V. Petracek; F. Prelz; M. Prevedelli; L. Ravelli; B. Rienaecker; J. Robert; O.M. Røhne; A. Rotondi; H. Sandaker; R. Santoro; L. Smestad; F. Sorrentino; G. Testera; I.C. Tietje; E. Widmann; P. Yzombard; C. Zimmer; J. Zmeskal; N. Zurlo
• Keywords: Antihydrogen; Antiproton; Positronium

The primary goal of the Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy (AEGIS) collaboration is to measure for first time precisely gravitational acceleration antihydrogen, H, a fundamental issue contemporary physics, using beam antiatoms.Indeed, although indirect arguments have been raised against different antimatter with respect matter, nevertheless some attempts formulate quantum theories gravity, or unify gravity other forces, consider possibility non-identical (1443) G. Consolati et al.interaction between matter and antimatter.We plan generate H through charge-exchange reaction excited Ps antiprotons coming from Antiproton Decelerator facility at CERN.It offers advantage produce sufficiently cold antihydrogen make feasible measurement reasonable uncertainty (of order few percent).Since cross-section above increases n 4 , being principal number Ps, it essential in highly (Rydberg) state.This will occur by means two laser excitations emitted nanoporous silica target: UV (at 205 nm) bring ground = 3 state; second pulse (tunable range 1650-1700 further excite Rydberg state.