Author: Torino, L.
Paper Title Page
MOPF01 Transverse Beam Size Measurements Using Interferometry at ALBA 193
  • U. Iriso, L. Torino
    CELLS-ALBA Synchrotron, Cerdanyola del Vallès, Spain
  • T.M. Mitsuhashi
    KEK, Ibaraki, Japan
  Double-slit interferometry using visible light has been used for measuring the transverse beam size in different accelerators. The beam size is inferred from the analysis of the spatial coherence of the synchrotron light produced by a bending magnet. At ALBA, this technique has been implemented with moderate success, mainly limited by the present imperfections in the in-vacuum mirror that is used to extract the light out of the vacuum chamber. In this paper, we report the results obtained with the current set-up, and discuss possible improvements.  
THAL3 Charge Distribution Measurements at ALBA 925
  • L. Torino, U. Iriso
    CELLS-ALBA Synchrotron, Cerdanyola del Vallès, Spain
  Two different set-ups are used to perform quantitative measurements of the charge distribution at ALBA. The first consists in a real-time analysis of data coming from the Fast Current Transformer or from the buttons of a Beam Position Monitor installed in the Storage Ring. The second is performed at the diagnostic visible beamline Xanadu, using a Photomultiplier that measures the temporal distribution of synchrotron light. In both cases a quantitative estimation of the charge distribution is obtained after a dedicated data treatment and beam current measurements from the DCCT. We compare results with both methods, and discuss differences and limitations with respect to bunch purity measurements with the Time Correlated Single Photon Counting technique.  
slides icon Slides THAL3 [15.369 MB]