Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 753, Issue -, Pages 24-33Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2014.03.031
Keywords
Twiss parameter measurement; Beam transport line
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A new method to measure the Twiss parameters in a beam transport line is presented. Usually these parameters are obtained based on the measured beam sizes. In the new method, in contrast, we determine them by Finding quadrupole strengths that result in minimum beam sizes at a downstream measurement location. Therefore, systematic errors related to beam-size monitors do not propagate to the measured Twiss parameters. We describe the method together with a detailed estimation of statistical and systematic errors, It was examined with beam at the SwissFEL injector test facility at PSI, and these results are also presented. (C) 2014 Elsevier B.V. All rights reserved
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