Design of Ultra Low Noise and Low Temperature Usable Power System for High Precision Detectors
In high precision detector systems, the power supply usually need to be ultra low noise and stabilized. Design and implementation of an ultra low noise power supply is described in this paper. We implemented and tested the power system actually in a scientific CCD (Charge coupled device) detector system, but the design structure could be used in many high precision detector systems as infrared detector or high energy particles detectors. The power system uses DC DC switching regulators and LDO regulators for power generating, uses multi stage filters for noise reducing. Multi output power supply with noise about 40 mVrms is achieved, the overall energy efficiency is 68.5% Besides, the electronic system takes the low temperature as an important consideration, and the system has been tested in an extreme environment as low as 193 K.
IEEE Transactions on Nuclear Science