节点文献
BES-Ⅱ TOF数据的离线刻度
Data Offline Calibration for the BES - Ⅱ TOF System
【摘要】 简要地讨论了北京谱仪-Ⅱ(BES-Ⅱ)飞行时间计数器(TOF)数据的离 线刻度.利用J/φ能区的电子对事例仔细完成的离线刻度与校正结果表明,新的 TOF时间分辨达到σTOF=180ps.由此大大增强了对带电粒子的识别能力.对 于3σ的π/K分离其动量可以达到0.93GeV/c.
【Abstract】 Data offline calibration and reconstruction for the BES- Ⅱ TOF system are reported in this paper. After applying calibration constants to correct the measured raw data, a the resolution of 180 ps is obtained for the new TOF system. The power of charged particle identification is improved. The momentum for the 3σπ/K separation goes up to 0. 93 GeV/c.
【关键词】 北京谱仪;
飞行时间计数器;
数据离线刻度;
时间分辨本领;
粒子识别;
【Key words】 Beijing Spectrometer, time-of-flight countor; data offline calibration, time resolution, particle identification;
【Key words】 Beijing Spectrometer, time-of-flight countor; data offline calibration, time resolution, particle identification;
【基金】 国家自然科学基金!(19991480,19825116);中国科学院九五重大及特别支持项目!(KJ95T—03)资助
- 【文献出处】 高能物理与核物理 ,High Energh Physics and Nuclear Physics , 编辑部邮箱 ,2001年02期
- 【分类号】O571
- 【被引频次】5
- 【下载频次】29