【摘要】 深入讨论了如何提高铅-闪烁光纤夹层电磁量能器角分辨的分析方法。用MC方法模拟量能器对不同能量光子事例的响应,得到了量能器电磁簇射位置测量误差函数;通过量能器束流测试数据分析,证明用每层所有测量单元计算该层重心、所有18层做方向重建、并运用误差函数来拟合入射方向,能够从分析角度显著地改善量能器的角分辨。更多还原

【Abstract】 Analyzing methods on the angular resolution of lead-scintillating fiber electromagnetic calorimeter are studied. The space resolution function, which is used to calculate weights, is extracted from Monte-Carlo simulation. Better angular resolution was obtained from the beam test data of AMS ECAL in 2002 at CERN, when the space resolution function was used in the fit. Different ways to calculate the centers of gravity, to choose the layers to fit the incidence direction are also discussed.更多还原