Author: Malatesta, A.
Paper Title Page
MOPWC03 Commissioning Results and First Operational Experience with SwissFEL Diagnostics 104
 
  • V. Schlott, V.R. Arsov, M. Baldinger, R. Baldinger, G. Bonderer, S. Borrelli, R. Ditter, D. Engeler, F. Frei, N. Hiller, R. Ischebeck, B. Keil, W. Koprek, R. Kramert, D. Llorente Sancho, A. Malatesta, F. Marcellini, G. Marinkovic, G.L. Orlandi, C. Ozkan Loch, P. Pollet, M. Roggli, M. Rohrer, M. Stadler, D.M. Treyer
    PSI, Villigen PSI, Switzerland
 
  SwissFEL is a free electron laser user facility at the Paul Scherrer Institute in Villigen, Switzerland designed to provide FEL radiation at photon energies ranging from 0.2 to 12 keV. Beam commissioning of the hard x-ray line ARAMIS has started in October 2016 and lasing at 300 eV was achieved in May 2017. First pilot user experiments at photon energies ≥ 2 keV are foreseen for the end of 2017. This contribution comprehends commissioning results and first operational experience of various diagnostics systems, such as beam position monitors, charge and loss monitors as well as transverse profile measurements with screens, wire scanners and synchrotron radiation monitors. It also provides information about sliced beam parameters using a transverse deflector and shows first results from the BC-1 compression monitor and measurements with the electron bunch arrival time monitors.  
poster icon Poster MOPWC03 [1.088 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPWC03  
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TU3AB2
Status of the Transverse Intra Bunch Train Feedback of the European XFEL  
 
  • W. Koprek, M. Gloor, B. Keil, A. Malatesta, F. Marcellini, G. Marinkovic, M. Roggli, M. Stadler, D.M. Treyer
    PSI, Villigen PSI, Switzerland
 
  The European XFEL has a transverse Intra Bunch Train Feedback (IBFB) that is able to measure and correct the beam position of each bunch individually by means of cavity beam position monitors (CBPMs) and stripline kicker magnets. The IBFB core system is located between the collimator and the beam distribution kicker system, using two vertical and two horizontal kickers as well as eight nearby CBPMs for an ultra-fast feedback loop. Moreover, it receives data from all undulator BPMs via longer fiber optic cables, thus allowing to correct small beam trajectory perturbations that may occur between the IBFB core systems and the undulators located some 100m downstream. After first lasing has been observed in 5/2017, the IBFB is presently being commissioned with beam. This paper will report on the final design of the IBFB system, FPGA-based data transfer and signal processing concept, as well as on the achieved performance and latest results of the different IBFB subsystems (including CBPMs) and overall system.  
slides icon Slides TU3AB2 [4.992 MB]  
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