The proposed SHiP experiment located at the CERN SPS will search for feebly interacting particles with masses below 10 GeV/c${}^2$. A veto timing detector will reject combinatorial di-muon backgrounds by requiring event to be coincident in time within 100 ps. The baseline option for the timing detector consist of scintillating bars read out by arrays of silicon photomultipliers. The detector comprises 546 bars of EJ200 scintillating material with dimensions 168 cm $\times$ 6 cm $\times$ 1 cm broken into three columns and covering an active area of 5 m $\times$ 10 m. The end of each bar is read out by an array of eight silicon photomultipliers attached to custom PCBs and subsequently read out by a DAQ system based on a SAMPIC chip. We present test beam results on a single column 22 bar prototype for the SHiP timing detector. Measurements were taken at the T10 beam line of the CERN PS. A timing resolution across the detector is found to be about 90 ps. The particle identification capability using a time of flight method is also demonstrated.

位于CERN SPS的拟议SHiP实验将寻找质量低于10 GeV / c的微弱相互作用的粒子${}^2$。否决定时检测器将通过要求事件在100 ps内的时间重合来拒绝组合的μ子背景。定时检测器的基线选项包括由硅光电倍增管阵列读出的闪烁条。探测器包括546条EJ200闪烁材料，尺寸为168 cm$\times$ 6厘米 $\times$ 1厘米分为三列，并覆盖5 m有效面积 $\times$10米 每个条的末尾都由连接到定制PCB上的八个硅光电倍增器的阵列读出，然后由基于SAMPIC芯片的DAQ系统读出。我们在SHiP定时检测器的单列22 bar原型上显示测试光束结果。在CERN PS的T10光束线上进行测量。发现整个检测器的定时分辨率约为90 ps。还展示了使用飞行时间方法的颗粒识别能力。