Angular Reconstruction of a Lead Scintillating-Fiber Sandwiched Electromagnetic Calorimeter
Abstract
A new method called Neighbor Cell Deposited Energy Ratio (NCDER) 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\pm 0.08 / \sqrt(E) \oplus 0.28 \pm 0.02 degree in the determination of the photons direction, which is much more precise than that obtained with the commonly-adopted Center of Gravity(COG) method (8.4 \pm 0.1 /sqrt(E) \oplus 0.8\pm0.3 degree). 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.
Keywords
Cite
@article{arxiv.1308.5564,
title = {Angular Reconstruction of a Lead Scintillating-Fiber Sandwiched Electromagnetic Calorimeter},
author = {Zu-Hao Li and Wei-Wei Xu and Ling-Yu Wang and Cheng Zhang and Zhi-Cheng Tang and Qi Yan and Min Yang and Yu-Sheng Lu and Guo-Ming Chen and He-Sheng Chen},
journal= {arXiv preprint arXiv:1308.5564},
year = {2015}
}
Comments
6 pages, 8 figures