Fig. 1. Simple classification of charged particle accelerators(modified from Ref.[
10])
Fig. 2. Principle of the high-voltage DC accelerators
Fig. 3. Difficulties in accelerating repeatedly by electrostatic fields
Fig. 4. Repeated acceleration with time-varying electromagnetic fields
Fig. 5. Principle of the betatron and a schematic of the annular vacuum chamber
Fig. 6. Diagram of the principle of multiple acceleration from professor G. Ising’s pioneer publication(1924)
Fig. 7. Principle of the linear induction accelerator
Fig. 8. Alternating voltage and principle of phase stability
Fig. 9. A schematic of the Wideröe linac structure
[28] Fig. 10. A pillbox cavity and the TM
010 mode electric and magnetic fields in it
[29] Fig. 11. A schematic of the Alvarez drift-tube linac structure
[9] Fig. 12. A schematic of the interdigital H-mode DTL
[31] Fig. 13. Standing wave coupled cavity structures
Fig. 14. A schematic of a four-vane RFQ structure
Fig. 15. Intuitive model of traveling wave acceleration
Fig. 16. Disk-loaded waveguide structures
Fig. 17. Principle of laser wake field acceleration (LWFA) and the capillary discharge waveguide of Berleeley Lab Laser Accelerator (BELLA)
[44] Fig. 18. Schematic drawing of a classical cyclotron
Fig. 19. Pole faces of the isochronous cyclotrons
Fig. 20. A spiral and a radial fixed-field alternating-gradient (FFAG) accelerator
[54] Fig. 21. Sketch of a microtron
Fig. 22. Sketch of the synchrotrons
Fig. 23. Sketch of a combinative optical system
Fig. 24. Rhodotron acceleration scheme
Fig. 25. Evolution of acceleration mechanism(modified from Ref.[
3])