Israeli tandem FEL: First lasing results and future plans

A. Abramovich, A. Arensburg, D. Chairman, A. Eichenbaum, M. Draznin, A. Gover*, H. Kleinman, I. Merhasin, Y. Pinhasi, J. S. Sokolowski, Y. M. Yakover, M. Cohen, L. A. Levin, O. Shahal, A. Rosenberg, I. Schnitzer, J. Shiloh

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


Results of first operation of the Israeli Electrostatic-Accelerator Tandem Free-Electron Laser (EA-FEL) are reported. This EA-FEL utilizes a 1.4 Amp electron beam obtained from a parallel flow Pierce-type electron gun. The e-beam is transported through a resonator located inside a planar Halbach configuration wiggler, both located at the high voltage terminal of the van de graaf accelerator. The high voltage terminal is charge to a positive potential of 1.4 MeV with respect to the cathode. The resonator utilizes a curved parallel plates waveguide and two Talbot effect quasioptical reflectors (wave splitters). It exhibited a quality factor of Q ≈ 30,000. Millimeter wave radiation pulses of 2 μsec duration were obtained at a frequency of 100.5 GHz, as predicted, at a power level above 1 kW.

Original languageEnglish
Pages (from-to)83-92
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1997
EventCoherent Electron-Beam X-Ray Sources: Techniques and Applications - San Diego, CA, United States
Duration: 31 Jul 19971 Aug 1997


  • FEL
  • High power microwave
  • mm waves


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