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Linear induction accelerators utilize ferrite-loaded, non-resonant magnetic induction cavities. Each cavity can be thought of as two large washer-shaped disks connected by an outer cylindrical tube. Between the disks is a ferrite toroid. A voltage pulse applied between the two disks causes an increasing magnetic field which inductively couples power into the charged particle beam. [1]

The linear induction accelerator was invented by Christofilos in the 1960s. [2] Linear induction accelerators are capable of accelerating very high beam currents (>1000 A) in a single short pulse. They have been used to generate X-rays for flash radiography (e.g. DARHT at LANL), and have been considered as particle injectors for magnetic confinement fusion and as drivers for free electron lasers. A compact version of a linear induction accelerator, the dielectric wall accelerator, has been proposed as a proton accelerator for medical proton therapy.


  1. ^ Humphries, Stanley (1986). "Linear Induction Accelerators". Principles of Charged Particle Acceleration. Wiley-Interscience. pp.  283–325. ISBN  978-0471878780.
  2. ^ Christofilos, N.C.; et al. (1963). "High-current linear induction accelerator for electrons". Proceedings, 4th International Conference on High-Energy Accelerators (HEACC63) (PDF). pp. 1482–1488.