Research of optical transition radiation on intense electron-beam diagnostics

In this paper, the basic theory of optical transition radiation(OTR) is described. The schemes of experiments on an electron beam of 18MeV, 2.7kA using OTR are presented. In the diagnostics of such an intense beam, some difficulties including strong visible light and Xray background interference and so on, have been solved. The characteristic pattern of OTR is obtained. With OTR method, the beam profile, energy, divergence and emittence were measured. The preliminary results show that OTR method is an effective way for intense beam diagnostics.