Very high resolution optical transition radiation imaging system: Comparison between simulation and experiment

Pavel Karataev, Thomas Aumeyr, Stewart Boogert, Konstantin Kruchinin, Laurence Nevay

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Optical transition radiation (OTR) has become a commonly used method for 2D beam imaging measurements. In the Accelerator Test Facility 2 (ATF2) at KEK, beam sizes smaller than the OTR point spread function have been measured. Simulations of the OTR imaging system have been performed using the ZEMAX software to study the effects of optical errors such as aberrations, diffraction, and misalignments of optical components. This paper presents a comparison of simulations of the OTR point spread function with experimental data obtained at ATF2. It shows how the quantification and control of optical errors impacts on optimizing the resolution of the system. We also show that the OTR point spread function needs to be predicted accurately to optimize any optical system and to predict the error made on measurement.
Original languageEnglish
Article number082803
Pages (from-to)1-8
Number of pages8
JournalPhysical Review Special Topics: Accelerators and Beams
Issue number8
Publication statusPublished - 31 Aug 2015

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