Electromagnetic Calorimeter Shower Images

<p>Each HDF5 file has the following structure:</p> <p>energy    Dataset {100000, 1}<br> layer_0   Dataset {100000, 3, 96}<br> layer_1   Dataset {100000, 12, 12}<br> layer_2   Dataset {100000, 12, 6}<br> overflow  Dataset {100000, 3}</p> <p>In practice, each file is a collection of 100,000 calorimeter showers corresponding to the particle specified in the file name (eplus = positrons, gamma = photons, piplus = charged pions).</p> <p>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:<br> Layer 0: (5, 160, 90) | Layer 1: (40, 40, 347) | Layer 2: (80, 40, 43)</p> <p>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.</p>