Sadiq BIW 2012
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Imaging System for Emittance Measurement
Abstract
Introduction
OTR light comes out with 4/γ angle.
Collector lens: has the middle focal length, collects most of the light from the source.
Fine Tune lens: has the biggest focal length, act as fine tune of magnification.
Main Focus Lens: has the smallest focal length, has biggest focusing strength, so act as main focus of light and focuses light to CCD.