Extended Data Fig. 7: Magnetic field measurements via the magnetron frequency.
From: Observation of the effect of gravity on the motion of antimatter
Magnetic field measured using the magnetron frequency of electron clouds in the centre of mirror A versus time during the magnet ramp-down. a Raw measurements (blue) are compared to the expected linear ramp (green line). b The difference between the measurements and the expected linear ramp is plotted versus time. c Measurements after accounting for the three corrections described in Methods. The 1–2 s gaps in the data are due to a memory limitation in the FPGA that controls the electrode voltages. New voltage instructions are loaded in this time.
