Synthesis of antihydrogen atoms in a CUSP trap

TitleSynthesis of antihydrogen atoms in a CUSP trap
Publication TypeJournal Article
Year of Publication2012
AuthorsKuroda, N, Enomoto, Y, Michishio, K, Kim, C, Higaki, H, Nagata, Y, Kanai, Y, Torii, H, Corradini, M, Leali, M, Lodi-Rizzini, E, Mascagna, V, Venturelli, L, Zurlo, N, Fujii, K, Ohtsuka, M, Tanaka, K, Imao, H, Nagashima, Y, Matsuda, Y, Juhász, B, Widmann, E, Mohri, A, Yamazaki, Y
JournalHyperfine Interactions

ASACUSA collaboration has been making a path to realize high precision microwave spectroscopy of ground-state hyperfine transitions of antihydrogen atom in flight for stringent test of the CPT symmetry. Recently, we have succeeded in synthesizing our first cold antihydrogen atoms employing a CUSP trap. It is expected that synthesized antihydrogen atoms in the low-field-seeking states are preferentially focused along the cusp magnetic field axis whereas those in the high-field-seeking states are not focused, resulting in the formation of a spin-polarized antihydrogen beam. We report the recent results of antihydrogen atom synthesis and beam production developed with the CUSP trap.