The signal level of the Radiation Detector output is generally low and needs to be amplified, shaped, impedance matched, etc. to be processed and recorded. Each wire of a position sensitive detector such as a multi-wire proportional chamber and a drift chamber (see High Energy Particle Detector) has a signal output, and the number of output channels is large, requiring the amplifier and the forming circuit to be simple and satisfy the signal processing power of the subsequent processing equipment. Flat requirements. The various types of circuits that implement these functions are known as amplification and readout circuits.

Front-end circuit editing A circuit that is directly connected to the Radiation Detector system. In order to prevent and reduce information distortion and external interference, its position is close to the Radiation Detector system, sometimes directly assembled in the Radiation Detector. The output of the circuit has strong anti-interference ability and anti-distortion ability, suitable for long-distance transmission. For example, in the high-energy physics experiment, the multi-chamber signal readout circuit belongs to the front-end circuit. In some cases, the circuit that digitizes the completion signal is also placed in the front end circuit.