Author: Goryashko, V.A.
Paper Title Page
WEPAB077 The Soft X-Ray Laser Project at MAX IV 2760
 
  • S. Werin, J. Andersen, F. Curbis, L. Isaksson, M. Kotur, F. Lindau, E. Mansten, D. Olsson, H. Tarawneh, P.F. Tavares, S. Thorin
    MAX IV Laboratory, Lund University, Lund, Sweden
  • S. Bonetti, A. Nilsson
    Stockholm University, Stockholm, Sweden
  • V.A. Goryashko
    Uppsala University, Uppsala, Sweden
  • P. Johnsson
    Lund University, Lund, Sweden
  • M. Larsson, P. Salén
    FYSIKUM, AlbaNova, Stockholm University, Stockholm, Sweden
  • O. Tjernberg
    KTH Physics, Stockholm, Sweden
  
  A soft x-ray laser beamline utilising FEL technology is being designed for the Short Pulse Facility (SPF) at the MAX IV Laboratory. A conceptual design study has been started following on the scientific case already prepared in collaboration between several Swedish Universities and driven by a strong (Swedish) user demand [*]. The baseline goal of the SXL beamline is to generate intense and short pulses in the range 1-5 nm (1-0.2 keV). The system is building on the MAX IV linac system, already today providing 3 GeV and pulses compressed to 100 fs for other applications within the SPF. As a special feature we foresee a variety of pump-probe capabilities. We here describe design issues and solutions for the accelerator and FEL system.
* http://frielektronlaser.se/onewebmedia/SXLsciencecase161102.pdf 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB077  
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THPIK090 352 MHz Tetrode RF Stations for Superconducting Spoke Cavities 4296
 
  • M. Jobs, K.J. Gajewski, V.A. Goryashko, H. Li, R.J.M.Y. Ruber, R. Wedberg
    Uppsala University, Uppsala, Sweden
  
  Two 352 MHz tetrode based RF stations for pulsed operation have been developed at the FREIA Laboratory, Uppsala University to validate the design and performance as RF source for the Spoke cavities in the first superconductive stage of the European Spallation Source(ESS) linear accelerator. The stations use dual TH595 tetrodes rated at 210 kW peak-power to provide a total power of 400 kW with a maximum pulse duration of 3.5 ms at 14 Hz repetition rate. Each tetrode is fed by a 10 kW solid state amplifier and the station is monitored by an internal control system with complete remote access. Extensive measurements have been performed on the RF performance, the power supplies as well as on the interlock systems. To conform to the specifications, special attention must be given for the response time of the tetrode power-supplies to acquire good quality RF output pulses. For the interlock system any shut-down condition due to tube malfunctioning or other sources must switch off the station in a controlled manner with minimal damage to any internal circuitry or to the tube itself whilst at the same time provide a fast discharge and cut-off of all relevant power supplies.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK090  
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