HIRFL-CSR 外靶实验终端 Veto 探测器的刻度

osmic rays are used for the calibration of the Veto detector at ETF in HIRFL-CSR of the Cooling Storage<br />Ring of Heavy Ion Research Facility in Lanzhou(HIRFL-CSR). The work is divided into two parts: position calibration<br />and time calibration. The hit positions of particles are obtained by position calibration and an uniform standard of the<br />measurement of particle hit time in the Veto detector is built through time calibration. The information of position and<br />time of particles serves as important criteria for eliminating changed particle events that hit the neutron wall detector,<br />providing support for the realization of the physical objectives of the neutron wall detector. A 2.53 cm position resolution<br />and a 1.09 ns time resolution have been achieved in this paper.