【摘 要】
：
飞行时间计数器(TOF)是北京谱仪(BESⅡ)中用于带电粒子鉴别的主要子探测器.鉴于粒子鉴别在物理分析中具有特殊重要的地位,本文对TOF测量时间的系统偏离和分辨率进行了研究.利
【机 构】
：
中国科学技术大学近代物理系,中国科学院高能物理研究所,中国科学院高能物理研究所,中国科学院高能物理研究所 合肥230026,中国科学院高能物理研究所北京100049rrrrrrrrn
论文部分内容阅读
飞行时间计数器(TOF)是北京谱仪(BESⅡ)中用于带电粒子鉴别的主要子探测器.鉴于粒子鉴别在物理分析中具有特殊重要的地位,本文对TOF测量时间的系统偏离和分辨率进行了研究.利用J/ψ能区的强子事例样本,对输出脉冲幅度Q,z向坐标位置和粒子的βγ值与时间偏离以及分辨率的关系进行了分析,分别构造了时间偏离和分辨率的修正函数.最后给出用ψ″能区的强子事例样本对修正函数进行检验的结果.
Time-of-Flight (TOF) is the main sub-detector used for the identification of charged particles in Beijing Spectrometer (BESⅡ). In view of the special importance of particle identification in the physical analysis, the systematic deviation and resolution of TOF measurement time The relationship between the output pulse amplitude Q, z coordinate position and the particle βγ value with time deviation and resolution is analyzed by using the Hadron sample of J / ψ energy region, time deviations and resolution are respectively constructed Finally, the test result of the modified function is given by using the Hadron sample of ψ "energy region.
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