Observation of the stimulated coherent diffraction radiation in an open resonator at LUCX facility

A. Aryshev*, S. Araki, M. Fukuda, P. Karataev, A. Konkov, G. Naumenko, A. Potylitsyn, Kazuyuki Sakaue, L. Sukhikh, N. Terunuma, D. Verigin, J. Urakawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


We present an initial test of a new type of a pre-bunched beam pumped free electron maser based on Stimulated Coherent Diffraction Radiation (SCDR) generated in an open resonator. A fast Schottky Barrier Diode (time response <1ns) has enabled us to investigate the properties of the radiation stored in the cavity as well as the intrinsic properties of the cavity itself. We observed a turn-by-turn SCDR generated by a multibunch beam. When the cavity length was exactly a half of the bunch spacing a clear resonance was observed. Moreover, turn-by-turn measurements revealed the cavity quality factor of 72.88, which was rather high for an open resonator in the wavelength range of 3-5 mm. An exponential growth of the photon intensity as a function of the number of bunches was also demonstrated.

Original languageEnglish
Pages (from-to)424-432
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 2014 Nov 1


  • Coherent diffraction radiation
  • Microwave resonator
  • Stimulated radiation

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics


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