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在北京正负电子对撞机的Ｊ／ψ和Ｄｓ能区，选择了辐射巴巴事例，并以此来研究北京谱仪的桶部簇射计数器能量响应特性．在消除了由于电子和辐射光子在桶部簇射计数器中沉积能量区域重叠的影响后，正确地得到了桶部簇射计数器在电子和光子动量小于２ＧｅＶ以下的能量响应，表明在所研究能区，桶部簇射计数器的能量响应线性很好．对桶部簇射计数器微小的非线性进行修正后，重建的π０不变质量谱得到改善．
In the J / ψ and Ds energy regions of the electron-positron collider in Beijing, the case of radiation Baba was selected and used to study the energy response characteristics of the barrel shower counter of Beijing spectrometer. After eliminating the influence of the overlap of the deposition energies of electron and radiation photons in the bucket shower counter, the energy response of the bucket shower counter at electron and photon momentum less than 2 GeV is correctly obtained, which shows that in the studied energy region , The energy response of the bucket shower counter is linear. After correcting the minor non-linearity of the bucket shower counter, the reconstructed π0 invariant mass spectrum is improved.