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

A. Aryshev, S. Araki, M. Fukuda, Pavel Vladimirovich Karataev, A. Konkov, G. Naumenko, A. Potylitsyn, K. Sakaue, L. Sukhikh, N. Terunuma, D. Verigin, J. Urakawa

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Abstract

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
Volume763
DOIs
Publication statusPublished - 1 Nov 2014

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Keywords

  • Coherent diffraction radiation
  • Microwave resonator
  • Stimulated radiation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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