Work Project Report by C. B. Jepsen

A series of measurements and fine-tunings as well as the development of a new fit routine has been developed for the hydrogen beam of ASACUSA in preparation for the antihydrogen experiment. The B-field amplitude of the microwave cavity of the hydrogen beamline has been maximized, and the cavity characterized with careful measurements at various frequencies and amplitudes. The new fit routine performs cubic spline interpolation of simulated data in order to generate fit functions. Since the simulated data are numerical solutions of the theoretical equations that describe the system, such fit functions are better suited than the previously used ones. By using the settings found to be optimal, a set of measurements of the Rabi oscillations of hydrogen atoms have been performed, which, when fitted with the new routine, yields a value of (1 420 405 756.9 +- 9.1) Hz for the hyperfine transition frequency.