The precision high voltage power supply system for the accelerating column of the 2MeV electron cooler for COSY

In the recent few years 2 MeV electron cooler was produced in Budker Institute of Nuclear Physics and assembled at the COSY storage ring (FZJ, Germany). The electrostatic accelerating column generates a high-energy electron beam. The power supply for the accelerating column of the electron cooling system consists of 33 controlled modules distributed by the accelerating potential. Each module has a precision controlled voltage source for 60 kV, 1mA and an additional supply for the solenoids of the magnetic system with a maximum current of 2.5 A. All the systems are controlled through the wireless ZIGBEE network. This report presents the structure of the power supply system, its parameters, and the results of tests carried out at BINP and FZJ.