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TY - CONF AU - Siano, M. AU - Iriso, U. AU - Kamma-Lorger, C.S. AU - Mazzoni, S. AU - Nosych, A.A. AU - Paroli, B. AU - Potenza, M.A.C. AU - Trad, G. ED - Schaa, Volker RW ED - Jansson, Andreas ED - Shea, Thomas ED - Olander, Johan TI - Electron Beam Size Measurements Using the Heterodyne Near Field Speckles at ALBA J2 - Proc. of IBIC2019, Malmö, Sweden, 08-12 September 2019 CY - Malmö, Sweden T2 - International Beam Instrumentation Conferenc T3 - 8 LA - english AB - Experiments using the heterodyne near field speckle method (HNFS) have been performed at ALBA to characterize the spatial coherence of the synchrotron radiation, with the ultimate goal of measuring both the horizontal and vertical electron beam sizes. The HNFS technique consists on the analysis of the interference between the radiation scattered by a colloidal suspension of nanoparticles and the synchrotron radiation, which in this case corresponds to the hard x-rays (12keV) produced by the in-vacuum undulator of the NCD-Sweet beamline. This paper describes the fundamentals of the technique, possible limitations, and shows the first experimental results changing the beam coupling of the storage ring. PB - JACoW Publishing CP - Geneva, Switzerland SP - 383 EP - 386 KW - radiation KW - experiment KW - synchrotron KW - undulator KW - synchrotron-radiation DA - 2019/11 PY - 2019 SN - 2673-5350 SN - 978-3-95450-204-2 DO - doi:10.18429/JACoW-IBIC2019-TUPP031 UR - http://jacow.org/ibic2019/papers/tupp031.pdf ER -