Induction Linac-Driven Free-Electron Lasers: Status And Future Prospects

D. Prosnitz

doi:10.1117/12.939691

23 July 1988 Induction Linac-Driven Free-Electron Lasers: Status And Future Prospects

D. Prosnitz

Proceedings Volume 0738, Free Electron Lasers; (1988) https://doi.org/10.1117/12.939691
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States

Abstract

The free-electron laser (FEL) directly converts the energy of an electron beam to electromagnetic radiation. The properties of the radiation are intimately related to the characteristics of the accelerator that produces the electron beam. A radio-frequency (rf) accelerator produces a high-frequency (1-100 MHz) burst of short electron pulses (10-30 ps) at relatively low peak current. The burst typically lasts tens of microseconds. The low peak current (0.1-1 kA) implies that an FEL driven by an rf accelerator must operate with low single-pass optical gain and produce radiation pulses of relatively low peak power. By contrast, an induction linac (IL) accelerator produces an electron beam consisting of longer (50 ns), higher current (1-10 kA) pulses. These pulses can be produced in a variety of pulse formats, including a series of high repetition rate bursts or a cw pulse train. For equal average powers, the induction linac operates at a lower duty factor than the RF accelerator.

Citation Download Citation

D. Prosnitz "Induction Linac-Driven Free-Electron Lasers: Status And Future Prospects", Proc. SPIE 0738, Free Electron Lasers, (23 July 1988); https://doi.org/10.1117/12.939691

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