Fig. 1. Schematic diagram of electron beam welding machine beam power density measurement system

Fig. 2. Schematic diagram of electron profile trajectory on Faraday cup

Fig. 3. High frequency deflection coil

Fig. 4. Deflection scanning control signal

Fig. 5. Simulation of water cooling in Faraday cup

Fig. 6. Flowchart of beam density measurement

Fig. 7. Deflection scanning signal

Fig. 8. Reconstructed 2-D result of beam density

Fig. 9. Reconstructed 3-D result of beam density