학술논문
Resolution of Transverse Electron Beam Measurements Using Optical Transition Radiation
Document Type
Conference
Author
Source
Proceedings of the 2005 Particle Accelerator Conference Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the. :4042-4044 2005
Subject
Language
ISSN
1944-4680
2152-9582
2152-9582
Abstract
In the plasma wakefield acceleration experiment E-167, optical transition radiation is used to measure the transverse profile of the electron bunches before and after the plasma acceleration. The distribution of the electric field from a single electron does not give a point-like distribution on the detector, but has a certain extension. Additionally, the resolution of the imaging system is affected by aberrations. The transverse profile of the bunch is thus convolved with a point spread function (PSF). Algorithms that deconvolve the image can help to improve the resolution. Imaged test patterns are used to determine the modulation transfer function of the lens. From this, the PSF can be reconstructed. The Lucy-Richardson algorithm is used to deconvolute this PSF from test images.