Investigation of coherent Čerenkov radiation generated by 6.1 MeV electron beam passing near the dielectric target

Coherent erenkov radiation generated by the 6.1 MeV bunched electron beam travelling near dielectric target (teflon) have been investigated theoretically and experimentally. It has been shown that the longitudinal bunch form-factor plays important role in the characteristics of coherent erenkov radiation. We have also compared the characteristics of coherent erenkov radiation and the ones of coherent diffraction radiation from a metal target in the similar conditions and have shown that coherent erenkov radiation is more intensive. These facts make coherent erenkov radiation a promising mechanism for a new noninvasive beam diagnostic technique.