High Granularity Electromagnetic Shower Images

This is a limited subset of the data used for training in arXiv:2005.05334. The network architectures and instructions to generate more data are available at here.

Electromagnetic calorimeter for the ILD consists of 30 active silicon layers in a tungsten absorber stack with 20 layers of 2.1 mm followed by 10 layers of 4.2 mm thickness respectively. We project the sensors onto a rectangular grid of 30×30×30 cells. Each cell in this grid corresponds to exactly one sensor, resulting in total of 27k channels.

The file has the following structure:

 Group named 30x30

   energy             : Dataset {1000, 1}

   layers               : Dataset {1000, 30, 30, 30}

The energy specifies the true energy of the incoming photons in units of GeV, where layers represent the energy deposited (MeV) in 30 layers of the calorimeter in an image data format. This file contains approximately 24.000 showers.

本数据集为arXiv:2005.05334论文中训练所用数据的有限子集。用于生成更多数据的网络架构与操作指南可在此处获取。

ILD的电磁量能器（Electromagnetic calorimeter）采用钨吸收体堆叠结构，包含30层有源硅探测器层：其中20层厚度为2.1 mm，剩余10层厚度为4.2 mm。我们将传感器投影至30×30×30的矩形网格中，网格内每个单元格恰好对应一个传感器，总计得到27000个探测通道。

该数据集文件具有如下结构：
名为30x30的组
energy：数据集 {1000, 1}
layers：数据集 {1000, 30, 30, 30}

其中energy字段表示入射光子的真实能量，单位为吉电子伏特（GeV）；layers字段以图像数据格式记录了量能器30个探测层中沉积的能量，单位为兆电子伏特（MeV）。本文件共包含约24000次粒子簇射事件。