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

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


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
Externally publishedYes
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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