Chinese Physics C > 1996, Vol. 20 > Issue(S3): 213-224

Study of Particle Identification Using dE/dxMeasurement in the BES Large Cylindrical Drift Chamber

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China

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The method for particle identiHcation using d E/d xinformation from the BES large cylindrical drift chamber is briefly described. The performance of the particle identiHcation using d E/d xis given. After applying systematic effect corrections and absolute energy calibration to the d E/d xraw data, the d E/d xresolution of 7.5% is obtained for minimum-ionizing particles (0.4-0.5GeV/ c7 π) with more than 30 d E/d xsamples per track. This results in 3 σK/ πseparation for momentum up to 0.65GeV/ cand 3 σe/ πseparation in a momentum range of 0.2 ≤ p≤ 4GeV/ c.
- Beijing spectrometer,
- drift chamber,
- ionization loss,
- dE/dxresolution,
- energy calibration,
- dE/dxsystematic effects,
- Landau formula,
- particle identification

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Rong Gang, Ma Jimao, Mao Huishun, Bai Jingzhi, Xie Peipei, Yan Jie, Wang Yunyong, Mao Zepu, Liu Rongguang, Sun Shijun, Li Weiguo, Song Xiaofei and Wu Zhengdong. Study of Particle Identification Using d E/d xMeasurement in the BES Large Cylindrical Drift Chamber[J]. Chinese Physics C, 1996, 20(S3): 213-224.

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Received: 1995-11-21

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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

Study of Particle Identification Using dE/dxMeasurement in the BES Large Cylindrical Drift Chamber

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China

Received Date:1995-11-21

Abstract:The method for particle identiHcation using dE/dxinformation from the BES large cylindrical drift chamber is briefly described. The performance of the particle identiHcation using dE/dxis given. After applying systematic effect corrections and absolute energy calibration to the dE/dxraw data, the dE/dxresolution of 7.5% is obtained for minimum-ionizing particles (0.4-0.5GeV/c7π) with more than 30 dE/dxsamples per track. This results in 3σK/πseparation for momentum up to 0.65GeV/cand 3σe/πseparation in a momentum range of 0.2 ≤p≤ 4GeV/c.

Study of Particle Identification Using dE/dxMeasurement in the BES Large Cylindrical Drift Chamber

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Study of Particle Identification Using dE/dxMeasurement in the BES Large Cylindrical Drift Chamber

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