Study of delay-line readout for boron coated straw detector

3 He detector has been widely used for security and neutron scattering. Due to 3 He supply crisis, alternative thermal neutron detection technique is studied. For the adequate 10 B supply and its large cross-section with thermal neutron, boron coated straw detector (BCSD) is a good choice to replace the 3 He tube. To achieve high thermal neutron detection efficiency, a BCSD module usually consists of tens of straws. The BCSD module can be read out in delay-line method. We study the principle of delay-line method, and design a delay-line based readout circuit including delay-line circuit and signal processing circuit. The simulation results and test results of the delay-line readout circuit are presented in this paper.