CERN Accelerating science

Article
Report number	CERN-BE-2016-002 ; CLIC-Note-1063
Title	Very high resolution optical transition radiation imaging system: Comparison between simulation and experiment
Author(s)	Bolzon, B (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Aryshev, A (KEK, Tsukuba) ; Aumeyr, Thomas (Oxford U., JAI) ; Boogert, Stewart Takashi (Oxford U., JAI) ; Karataev, Pavel (Oxford U., JAI) ; Kruchinin, Konstantin (Oxford U., JAI) ; Lefevre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Nevay, Laurence James (Oxford U., JAI) ; Shevelev, M (KEK, Tsukuba) ; Terunuma, N (KEK, Tsukuba) ; Urakawa, J (KEK, Tsukuba) ; Welsch, Carsten (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.)
Publication	2015
Imprint	14 Oct 2015
Number of pages	8
In:	Phys. Rev. Spec. Top. Accel. Beams 18 (2015) 082803
DOI	10.1103/PhysRevSTAB.18.082803
Subject category	Accelerators and Storage Rings
Free keywords	Optical Transition ; Radiation imaging system
Abstract	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.
Copyright/License	publication: © 2015-2024 The Author(s) (License: CC-BY-3.0)

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