Chinese Physics C > 2005, Vol. 29 > Issue(8): 781-786

Using the Q of TOF to Identify the Particles

Institute of High Energy Physics, CAS Beijing 100049,China2 Department of Modern Physics, University of Science and Technology of China,Hefei,230026,China

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Abstract：
Time of flight counter (TOF) is one of the main subdetectors of Beijing SpectrometerII (BESII) for identification of charge particles. Time of flight and pulse amplitude are measured from the time of flight counters, when the particle hits on the TOF. Based on Di-mu sample from BESII, the correction of pulse amplitude Q is studied. Using the hadron sample of J/ψ, the relation between the corrected Pulse amplitude and βγ value is analyzed. A conclusion is that it is feasible to use the pulse amplitude Q ₀of TOF to identify the particles. Finally the efficiency and error efficiency is given while the pulse amplitude is used to identify the particles.

References

[1]

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LIU Fang, HE Kang-Lin, SUN Sheng-Sen, YANG Fan, ZHENG Zhi-Peng and LI Jin. Using the Q of TOF to Identify the Particles[J]. Chinese Physics C, 2005, 29(8): 781-786.

LIU Fang, HE Kang-Lin, SUN Sheng-Sen, YANG Fan, ZHENG Zhi-Peng and LI Jin. Using the Q of TOF to Identify the Particles[J]. Chinese Physics C, 2005, 29(8): 781-786. shu

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Received: 2004-12-06
Revised: 1900-01-01

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Using the Q of TOF to Identify the Particles

Corresponding author:LIU Fang,

Institute of High Energy Physics, CAS Beijing 100049,China2 Department of Modern Physics, University of Science and Technology of China,Hefei,230026,China

Received Date:2004-12-06

Accepted Date:1900-01-01

Available Online:2005-08-05

Abstract:Time of flight counter (TOF) is one of the main subdetectors of Beijing SpectrometerII (BESII) for identification of charge particles. Time of flight and pulse amplitude are measured from the time of flight counters, when the particle hits on the TOF. Based on Di-mu sample from BESII, the correction of pulse amplitude Q is studied. Using the hadron sample of J/ψ, the relation between the corrected Pulse amplitude and βγ value is analyzed. A conclusion is that it is feasible to use the pulse amplitude Q₀of TOF to identify the particles. Finally the efficiency and error efficiency is given while the pulse amplitude is used to identify the particles.

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Using the Q of TOF to Identify the Particles

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通讯作者:陈斌, bchen63@163.com

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