Low noise Power Supply System for the Front-End Electronics of the HADES RPC detector

This contribution presents the Power Supply System designed for the Front-End Electronics of the HADES RPC detector, installed at GSI (Darmstadt, Germany). The system is designed as a distributed architecture and contains custom Low Voltage boards based on DC-DC switching converters to obtain high efficiency and reduce spacing. The switching converters are conveniently filtered to reduce EMI, obtaining very low output noise. Experimental results with the RPC detector prove that the low noise levels achieved at the output of the switching converters behave as good as laboratory power supplies, not producing any worsening in the response of the Front-End Electronics.