Electromagnetic Calorimeter Shower Images with Variable Incidence Angle and Position

Each file is a collection of 500,000 (or 400,000 in the case of positrons) calorimeter showers corresponding to the particle specified in the file name (eplus = positrons, gamma = photons, piplus = charged pions). The calorimeter we built is segmented longitudinally into three layer with different depths and granularities. In units of mm, the three layers have the following (eta, phi, z) dimensions: Layer 0: (5, 160, 90) | Layer 1: (40, 40, 347) | Layer 2: (80, 40, 43) In the HDF5 files, the `energy` entry specifies the true energy of the incoming particle in units of GeV. `layer_0`, `layer_1`, and `layer_2` represents the energy deposited in each layer of the calorimeter in an image data format. Given the segmentation of each calorimeter layer, these images have dimensions 3x96 (in layer 0), 12x12 (in layer 1), and 12x6 (in layer 3). The `overflow` contains the amount of energy that was deposited outside of the calorimeter section we are considering. The fields `x0`, `y0`, `z0`, `t0`, `px`, `py`, `pz` provide position and kinematic information of incident particles upon impact.每个文件均包含50万个（电子正电子对应的文件则为40万个）与文件名中指定粒子对应的量能器簇射（calorimeter showers），其中文件名标记规则为：eplus代表电子正电子，gamma代表光子，piplus代表带电π介子。 本数据集所用量能器（calorimeter）沿纵向分为三层，各层深度与粒度均不相同。三层的尺寸（单位：mm）以(η, φ, z)形式标注如下：第0层：(5, 160, 90) | 第1层：(40, 40, 347) | 第2层：(80, 40, 43)。 在HDF5格式文件中，`energy`字段表示入射粒子的真实能量，单位为吉电子伏特（GeV）。`layer_0`、`layer_1`与`layer_2`分别以图像数据格式存储量能器各层沉积的能量。结合各量能器层的分割结构，这三层对应的图像尺寸分别为：第0层3×96、第1层12×12、第3层12×6。`overflow`字段存储了落入所考虑量能器区域之外的沉积能量。`x0`、`y0`、`z0`、`t0`、`px`、`py`与`pz`字段提供了入射粒子碰撞时的位置与运动学信息。