Author: Björklund Svensson, J.
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THPAL108 In-Situ Characterization of Normal Conducting RF Cavities in Solaris Light Source Storage Ring 3891
  • P.B. Borowiec, A.I. Wawrzyniak
    Solaris National Synchrotron Radiation Centre, Jagiellonian University, Kraków, Poland
  • J. Björklund Svensson
    Lund University, Division of Atomic Physics, Lund, Sweden
  The SOLARIS 1.5 GeV storage ring is equipped with two 100 MHz active cavities and two 3rd harmonic passive cavities. They are in operation since 2015. For control of their respective working points, knowledge about cavity voltage and higher order mode (HOM) frequency spec-trum is mandatory. After their installation in the storage ring and connection of the RF feeder to a high power isolator and a transmitter, the influence of the external elements on the quality factor and the HOM spectrum should be verified with respect to simulations of a simpli-fied model of a stand-alone cavity. This paper will pre-sent results of in-situ cavity measurements to qualify the HOM placement and their quality factor. HOM meas-urements have been performed in the range 100 MHz to 1.3 GHz for active cavities and 300 MHz to 1.5 GHz for 3rd harmonic cavities at three different temperatures under ultra-high vacuum conditions for each cavity separately. The measurement and analysis methodology will also be presented  
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THPMK001 Creating Two-Pulse Beams from a Photoinjector for Two Color FEL or Beam Driven PWFA Experiments 4294
  • J. Andersson, J. Björklund Svensson, M. Kotur, F. Lindau, S. Thorin
    MAX IV Laboratory, Lund University, Lund, Sweden
  The MAX IV linac is investigated as a FEL driver in the SXL project, but there is also an ongoing investigation in using the linac as a driver for beam driven plasma wakefield acceleration experiments. From both these applications, double pulses from the photoinjector within the same RF period is desired. In this paper we discuss the possibilities of using the current photoinjector at MAX IV as driver and show simulations results from the pre-injector, both for FEL applications and for PWFA applications.  
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