Energy resolution for measurement method using optical transition radiation

The technology using optical transition radiation(OTR) is a measurement method for the electron beam of high energy and high current and it has been applied in the on-line beam diagnostic system with ultra-fast response, high special resolution. It measures the beam parameters such as beam energy, divergence and emmittance. The effect of structure parameters of the measurement system, such as the focus length of the lens, the location of image, the pixel size of CCD, upon the measurement accuracy of the beam energy resolution was analyzed. The influence of beam divergence angle on energy resolution in OTR measurement was simulated. The effect was applied to correct the measuring data of beam energy resolution. The effect of OTR data noise on the precision of beam energy resolution was also