【摘要】 描述了一种为兰州放射性核束流线（AIBLL）研制的时间拾取装置．次级束引起闪烁薄膜发光，椭球面镜聚焦，光电倍增管读出，CAMACTDC记录次级束的飞行时间．其时间分辨可以达到140ps，计数率可以达到108pps．更多还原

【Abstract】 In this paper we present a timing pickup detector used at Radioactive Ion Beam Line in Lanzhou (RIBLL). It has low detection threshold and is radiation-resistant. The photons induced by radioactive beam ions passing through a thin plastic-scintillator foil, east from the foil center corresponding to one focus point of a aluminum ellipsoidal mirror and are reflected to another focus point at which the cathode of a photomultiplier tube locates. The readout pulse signals were sent into a CAMAC’s TDC module. A time resolution of about 140ps is achieved and the counting face up to 108pps is allowed.更多还原