[{"id":0,"text":"nu_tau  348.3 MeV","data":{"traj_x":[72.5, 335.3],"traj_y":[1009.8, 596.1],"traj_z":[323.7, 422.7],"start":[72.5, 1009.8, 323.7],"end":[335.3, 596.1, 422.7]},"children":[{"id":1,"text":"nu_tau  210 MeV","data":{"traj_x":[335.3,338.6,342.5,342.6,347.7,347.7,347.7,349.1,349.1,350.8,352.5,413.6],
"traj_y":[596.1,576.8,553.3,553.2,522.8,522.7,522.7,514.6,514.6,504.5,494.3,133.0],
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"start":[335.3, 596.1, 422.7],"end":[413.6, 133.0, -4153.2]},"children":[],"icon":"jstree-file"},{"id":2,"text":"proton  57 MeV","data":{"traj_x":[335.3,335.4,335.4],
"traj_y":[596.1,593.2,593.2],
"traj_z":[422.7,423.2,423.2],
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