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Figure 1

The first pp collision candidate shown by the event display in the ALICE counting room (3D view, $r$-$\phi$ and $r$-$z$ projections), the dimensions are shown in cm The dots correspond to hits in the silicon vertex detectors (SPD, SDD and SSD), the lines correspond to tracks reconstructed using loose quality cuts. The ellipse drawn in the middle of the detector surrounds the reconstructed event vertex.
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