The Canvas window shows a picture of the selected event. The tracks of the charged particles are shown as lines in the tracking detectors. Neutral particles, like the photon, do not leave any tracks. Both deposit energy in the calorimeters.
The event can be viewed from the side (Side-View) and along the incoming beams (End-View). The dashed line in the end-view shows the direction of the missing momentum caused by undetected particles (e.g. neutrinos) or mis-measured energies. Holding and moving the cursor in the window will zoom in or out.
Checking the pick mode single tracks in the tracking detectors can be selected by mouse click and their information in the Track Momenta Window will be highlighted.
Please note, that outside of the outermost ring the total energy deposition in the calorimeters is denoted.