Development of power supply systems for CW negative ion sources at the Budker Institute of Nuclear Physics

Abstract

A series of surface-plasma negative ion sources were developed and produced at Budker institute of nuclear physics in the last 30 years. A typical power supply system of the ion source provides the powering and controlling of source circuits with voltage, current and timing. As a result of cesium deposition to the sources, the specific of surface-plasma negative ion sources is the occasional HV breakdowns in ion optical system and an increased level of electric noise in the discharge and ion optical system circuits. This noise is inherent for the discharges in magnetic field. An adequate power supply and control systems were designed and manufactured in BINP workshop for the sources reliable operation under these conditions. The paper describes the principles, schematic and design solutions of power supply systems, produced at Budker institute for the surface-plasma negative ion sources.