论文标题
熊猫桶的时间成像重建
Time imaging reconstruction for the PANDA Barrel DIRC
论文作者
论文摘要
创新的枪管DIRC（对内部反射的Cherenkov Light的检测）计数器将在新的抗脂蛋白和离子研究设施（FAIR）的熊猫实验中心区域提供HADRONIC颗粒识别（PID），德国达姆斯塔特，德国。该探测器旨在将带电的尖端和kaons分开至少3个标准偏差，最高为3.5 Gev/c，覆盖了22 $^{\ circ} $ -140 $^{\ circ} $的极角范围。一个微通道板光电倍增管的阵列用于检测Cherenkov光子的位置和到达时间，其位置分辨率为2 mm，时间精度约为100 ps。已经开发了时间成像重建，以最佳地使用可观察物并确定检测器的性能。该重建算法通过基于每个像素中检测到的光子传播时间直接计算最大似然，从而直接根据数据或分析性或详细的模拟来确定最大程度的函数，从而执行粒子识别。
The innovative Barrel DIRC (Detection of Internally Reflected Cherenkov light) counter will provide hadronic particle identification (PID) in the central region of the PANDA experiment at the new Facility for Antiproton and Ion Research (FAIR), Darmstadt, Germany. This detector is designed to separate charged pions and kaons with at least 3 standard deviations for momenta up to 3.5 GeV/c, covering the polar angle range of 22$^{\circ}$-140$^{\circ}$. An array of microchannel plate photomultiplier tubes is used to detect the location and arrival time of the Cherenkov photons with a position resolution of 2 mm and time precision of about 100 ps. The time imaging reconstruction has been developed to make optimum use of the observables and to determine the performance of the detector. This reconstruction algorithm performs particle identification by directly calculating the maximum likelihoods using probability density functions based on detected photon propagation time in each pixel, determined directly from the data, or analytically, or from detailed simulations.
