The invention concerns a method for charging a magnet arrangement (20)
comprising a first partial region (21) which can be superconductingly short-circuited
via an additional switch (23), and a second partial region (22),
wherein the two partial regions (21, 22) generate, in an investigational
volume (8), gradients of second order having different signs. A magnetic
field dependence B* is measured close to the desired operating state of the magnet
arrangement (20) and operating currents are determined for each of the two
partial regions (21, 22) at which the overall magnetic field B in the volume
(8) under investigation is freed from a magnetic field gradient of second
order. These operating currents are set thereby taking into consideration the inductive
coupling of the partial regions (21, 22) through initially charging of the
overall magnet arrangement (20) and, after closing of the additional switch
(23), through continuation of charging only in the second partial region
(22). The magnetic field homogeneity of the magnet arrangement (20)
can thereby be improved in a simple and inexpensive manner.