Chinese Physics C > 2014, Vol. 38 > Issue(5): 056203 DOI: 10.1088/1674-1137/38/5/056203

Angular reconstruction of a lead scintillating-fiber sandwiched electromagnetic calorimeter

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The Neighbor Cell Deposited Energy Ratio (NCDER) is a new method that is proposed to reconstruct incidence position in a single layer for a 3-dimensional imaging electromagnetic calorimeter (ECAL). This method was applied to reconstruct the ECAL test beam data for the Alpha Magnetic Spectrometer-02 (AMS-02). The results show that this method can achieve an angular resolution of 7.36±0.08°/√ E⊕0.28±0.02° in the determination of the photon's direction, which is much more precise than that obtained with the commonly-adopted Center of Gravity (COG) method (8.4±0.1°/√ E⊕0.8±0.3°). Furthermore, since it uses only the properties of electromagnetic showers, this new method could also be used for other type of fine grain sampling calorimeters.

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LI Zu-Hao, XU Wei-Wei, WANG Ling-Yu, ZHANG Cheng, TANG Zhi-Cheng, YAN Qi, YANG Min, LÜ Yu-Sheng, CHEN Guo-Ming and CHEN He-Sheng. Angular reconstruction of a lead scintillating-fiber sandwiched electromagnetic calorimeter[J]. Chinese Physics C, 2014, 38(5): 056203. doi: 10.1088/1674-1137/38/5/056203

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Received: 2013-07-04
Revised: 2013-08-20

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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

Angular reconstruction of a lead scintillating-fiber sandwiched electromagnetic calorimeter

Corresponding author:LI Zu-Hao,

Received Date:2013-07-04

Accepted Date:2013-08-20

Available Online:2014-05-05

Abstract:The Neighbor Cell Deposited Energy Ratio (NCDER) is a new method that is proposed to reconstruct incidence position in a single layer for a 3-dimensional imaging electromagnetic calorimeter (ECAL). This method was applied to reconstruct the ECAL test beam data for the Alpha Magnetic Spectrometer-02 (AMS-02). The results show that this method can achieve an angular resolution of 7.36±0.08°/√E⊕0.28±0.02° in the determination of the photon's direction, which is much more precise than that obtained with the commonly-adopted Center of Gravity (COG) method (8.4±0.1°/√E⊕0.8±0.3°). Furthermore, since it uses only the properties of electromagnetic showers, this new method could also be used for other type of fine grain sampling calorimeters.

Angular reconstruction of a lead scintillating-fiber sandwiched electromagnetic calorimeter

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通讯作者:陈斌, bchen63@163.com

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Angular reconstruction of a lead scintillating-fiber sandwiched electromagnetic calorimeter

Corresponding author:LI Zu-Hao,

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