Fast multichannel stabilization of the magnetic resonance in a magneto-resonance spectrometer

A method of fast stabilization of the magnetic resonance in a magnetic resonance spectrometer has been developed and tested. The source of the oscillatory field is the synthesizer which frequency follows variations of the average magnetic field in spectrometer. To search for the neutron electric dipole moment in the experimental setup under unfavorable conditions in the reactor experimental hall a stability of the magnetic resonance has been achieved that is equivalent to a magnetic field stability at the level of ≈ 2.5 × 10−12 T per 6 min in a volume of about 501 with an electric field of 1.5 MV/m.