Koopmans, M.; Armborst, F.; Hwang, J.G.; Jankowiak, A.; Kuske, P.; Ries, M.; Schiwietz, G.: Vertical Beam Size Measurement Methods at the BESSY II Storage Ring and their Resolution Limits. In: Mark Boland ... [Ed.] : Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019. Geneva, Switzerland: JACoW Publishing, 2019. - ISBN 978-3-95450-208-0, p. WEPGW012/2491-2494
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With the VSR upgrade for the BESSY II electron storage ring* bunch resolved diagnostics are required for machine commissioning and to ensure the long-term quality and stability of operation. For transverse beam size measurements we are going to use an interferometric method, which will be combined with a fast gated intensified CCD camera at a subsequent stage. A double-slit interferometer method has already been verified successfully at BESSY II**. In addition first 2D bunch resolved measurement tests have been performed at the dedicated diagnostics beamline for bunch length measurements. Measurements of the interferometer and X-ray pinholes as function of a vertical electron beam excitation are compared in this paper.