Precision High-Current Current Source with Modular Design for the INP Magnetic Measurement Stand

The paper presents the structure and control algorithms of a modular designed high-current current source designed for precision measurement of the quality of the magnetic field in magnetic elements designed and produced in the Budker Institute of Nuclear Physics for modern accelerator facilities. The development of accelerator technologies constantly increases the requirements for the quality of the field of magnetic lenses and bend magnets of cyclic accelerators. New integral lenses with complex laws of field change are being designed. Several magnetic measurement stands are used to adjust and control the field quality of magnetic elements being developed at the Budker Institute of Nuclear Physics (Siberian Branch, Russian Academy of Sciences). One of the main elements of the stand is a precision current source, which makes it possible to obtain a field map in the tested magnetic element at different current levels with errors less than 0.002%. The source has to operate while maintaining current quality, with output current levels from several amperes to 1500 A and output voltages up to 100 V at different inductive loads.