Author/Authors :
Amoretti، نويسنده , , Robert M. and Amsler، نويسنده , , C. and Bonomi، نويسنده , , G. and Bouchta، نويسنده , , Blake A. and Bowe Ellis، نويسنده , , P.D. and Carraro، نويسنده , , C. T. Charlton ، نويسنده , , M. and Collier، نويسنده , , M.J.T. and Doser، نويسنده , , M. and Filippini، نويسنده , , V. and Fine، نويسنده , , K.S. and Fontana، نويسنده , , A. and Fujiwara، نويسنده , , M.C. and Funakoshi، نويسنده , , R. and Genova، نويسنده , , P. and Glauser، نويسنده ,
Abstract :
The ATHENA apparatus that recently produced and detected the first cold antihydrogen atoms is described. Its main features, which are described herein, are: an external positron accumulator, making it possible to accumulate large numbers of positrons; a separate antiproton catching trap, optimizing the catching, cooling and handling of antiprotons; a unique high resolution antihydrogen annihilation detector, allowing an clear determination that antihydrogen has been produced; an open, modular design making variations in the experimental approach possible and a “nested” Penning trap situated in a cryogenic, 3T magnetic field environment used for the mixing of the antiprotons and positrons.
Keywords :
Penning Trap , Antiprotons , Positrons , Cryogenic detector , Antihydrogen
