Study of absolute photon energy calibration for the BESⅢ EMC

Chun Guang Mu; Chun Xiu Liu; Feng Cai Ma; Jian Ming Bian

Study of absolute photon energy calibration for the BESⅢ EMC

Chun Guang Mu, Chun Xiu Liu, Feng Cai Ma, Jian Ming Bian

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

Abstract

The photon absolute energy calibration of BESIII Electromagnetic Calorimeter (EMC) is investigated. Using Monte Carlo (MC) single photons, we give the calibration factors for MC simulation data. On the basis of MC calibration, we give the second calibration for real data by using the inclusive process of ψ'→π⁰X. In BESIII, the photon energy can be reconstructed by the matching between the Time-of-Flight counters (TOF) and EMC energy deposits. In this case, the corresponding photon absolute energy calibrations are also studied. The results show that the measuring precision is about 0.5% for the photons from ψ'→γX_c1.2.

Original language	English (US)
Pages (from-to)	437-442 and 469
Journal	Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology
Volume	34
Issue number	4
State	Published - Apr 1 2014

Keywords

Absolute energy calibration
Calibration factor
Electromagnetic calorimeter

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abstract = "The photon absolute energy calibration of BESIII Electromagnetic Calorimeter (EMC) is investigated. Using Monte Carlo (MC) single photons, we give the calibration factors for MC simulation data. On the basis of MC calibration, we give the second calibration for real data by using the inclusive process of ψ'→π0X. In BESIII, the photon energy can be reconstructed by the matching between the Time-of-Flight counters (TOF) and EMC energy deposits. In this case, the corresponding photon absolute energy calibrations are also studied. The results show that the measuring precision is about 0.5% for the photons from ψ'→γXc1.2.",

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N2 - The photon absolute energy calibration of BESIII Electromagnetic Calorimeter (EMC) is investigated. Using Monte Carlo (MC) single photons, we give the calibration factors for MC simulation data. On the basis of MC calibration, we give the second calibration for real data by using the inclusive process of ψ'→π0X. In BESIII, the photon energy can be reconstructed by the matching between the Time-of-Flight counters (TOF) and EMC energy deposits. In this case, the corresponding photon absolute energy calibrations are also studied. The results show that the measuring precision is about 0.5% for the photons from ψ'→γXc1.2.

AB - The photon absolute energy calibration of BESIII Electromagnetic Calorimeter (EMC) is investigated. Using Monte Carlo (MC) single photons, we give the calibration factors for MC simulation data. On the basis of MC calibration, we give the second calibration for real data by using the inclusive process of ψ'→π0X. In BESIII, the photon energy can be reconstructed by the matching between the Time-of-Flight counters (TOF) and EMC energy deposits. In this case, the corresponding photon absolute energy calibrations are also studied. The results show that the measuring precision is about 0.5% for the photons from ψ'→γXc1.2.

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KW - Calibration factor

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Study of absolute photon energy calibration for the BESⅢ EMC

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