Data di Pubblicazione:
2019
Abstract:
The antihydrogen program of the ASACUSA collaboration at the antiproton decelerator of CERN focuses on Rabi-type measurements of the ground-state hyperfine splitting of antihydrogen for a test of the combined Charge–Parity–Time symmetry. The spectroscopy apparatus consists of a microwave cavity to drive hyperfine transitions and a superconducting sextupole magnet for quantum state analysis via Stern–Gerlach separation. However, the small production rates of antihydrogen forestall comprehensive performance studies on the spectroscopy apparatus. For this purpose a hydrogen source and detector have been developed which in conjunction with ASACUSA's hyperfine spectroscopy equipment form a complete Rabi experiment. We report on the formation of a cooled, polarized, and time modulated beam of atomic hydrogen and its detection using a quadrupole mass spectrometer and a lock-in amplification scheme. In addition key features of ASACUSA's hyperfine spectroscopy apparatus are discussed.
Tipologia CRIS:
Articolo su Rivista
Keywords:
Antihydrogen hyperfine structure; Atomic beam; Atomic hydrogen; Magnetic resonance;
Elenco autori:
Malbrunot, C.; Diermaier, M.; Simon, M. C.; Amsler, C.; Arguedas Cuendis, S.; Breuker, H.; Evans, C.; Fleck, M.; Kolbinger, B.; Lanz, A.; Leali, M.; Maeckel, V.; Mascagna, V.; Massiczek, O.; Matsuda, Y.; Nagata, Y.; Sauerzopf, C.; Venturelli, L.; Widmann, E.; Wiesinger, M.; Yamazaki, Y.; Zmeskal, J.
Link alla scheda completa: