The circuit for front-end electronics for neutron detection wall based on CPLD

which can deal with the output signal of the neutron detection wall in IMP

is introduced in this paper.An improved circuit design is proposed for front-end read-out electronics of neutron detection wall detector.The system consists of coincidence unit

QAC unit

TAC unit

and multiplexer unit etc.We use CPLD to construct the main circuit in the design.Compared with the circuits constructed by separate devices

the new circuit has features such as the DMOS switch used

higher precision

less components

lower cost and lower dissipation.The circuit we developed can be widely used in nuclear measurement system of physics experiment with large-scale detector array to form front-end read-out electronics of data acquisition system.