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Equations of motion 5th order embedded Runge-Kutta Adaptive stepsize control Best accuracy over 10-10 Any number and any type of particles Additional differential equations			Windows User Interface* Fully integrated set-up editor On-line help Plots of raw GPT output Plots of all data-analysis results Plots of particle trajectories Multiple synchronized windows Wizards for custom elements
Output At specified simulation times At 3D planes (nondestructive screens) Coordinates and electromagnetic fields Trajectory output			Space-charge 3D particle-in-cell 3D point-to-point 1) 2D point-to-ray 2D point-to-circle
Data-analysis Fully hierarchical Standard macroscopic quantities RMS, 90% and 100% Emittance Courant-Snyder parameters Histograms Color-density plots Support for files >>4 GB			Scanning and solving Automatic parameter scans Multi-dimension root-finder Multi-dimensional optimizer MPI scans over several PC's 2)
FEL simulations Multi-mode Multi-pass Gaussian modes Waveguide modes			Collector design Multiple-scattering plate, pipe, cone, torus, sphere, iris Current/Power density plots
Beam line components barmagnet, bend, bz, bzsolenoid, circlecharge, drift, ecyl, erect, ezcell, linecharge, magline, magplate, magpoint, multislit, platecharge, pointcharge, quadrupole, rectcoil, rmax, sextupole, solenoid, trwcell, trwlinac, trwlinbm, undueqfo, unduplan, xymax Custom elements			Interfaces with other codes 2D and 3D electrostatic field-maps 2D and 3D magnetostatic field-maps 2D TM cavity field-map Poisson/ Superfish interface Tabulated ascii input and output DXF output for 3D drawing software SDDS conversion utility

¹⁾ GPT version 3.0 contains a fast O(N log N) point-to-point space charge model. The 2.8 release contains an O(N²) version.
²⁾ Platform dependant, see the GPT versions page for details.