Author: Curbis, F.
Paper Title Page
Design and Modelling of the Baseline Layout for the Soft X-Ray Laser (SXL) at MAX IV Laboratory  
  • F. Curbis, S. Werin
    MAX IV Laboratory, Lund University, Lund, Sweden
  The Soft X-ray Laser (SXL) is a project aiming to build a new beamline that will exploit the potential of the MAX IV 3 GeV linac and its Short Pulse Facility (SPF). In fact, this injector, which is routinely used as an electron source for the two rings in the laboratory, is capable of delivering ultra-brilliant electron pulses and possibly driving a Free Electron Laser (FEL). While the necessary technical improvements and features of the linac are described in another contribution, this paper presents the baseline layout of the SXL FEL and point out the features of the photon source that should deliver brilliant pulses between 1 and 5 nm. The baseline design consists of a SASE FEL with variable polarization undulators. However, the plan is to develop a comprehensive system of external sources at various wavelength in order to enable various pump-probe schemes, thereby satisfying the requests of the users community. Moreover the design needs to take into account the possibility of accommodating two-pulse-two-color capability and the production of femtosecond or even attosecond pulses.  
slides icon Slides TUA02 [2.345 MB]  
TUP010 Double-Bunches for Two-Color Soft X-Ray Free-Electron Laser at the MAX IV Laboratory 1
  • J. Björklund Svensson, O. Lundh
    Lund University, Lund, Sweden
  • J. Andersson, F. Curbis, M. Kotur, F. Lindau, E. Mansten, S. Thorin, S. Werin
    MAX IV Laboratory, Lund University, Lund, Sweden
  The ability to generate two-color free-electron laser (FEL) radiation enables a wider range of user experiments than just single-color FEL radiation. There are different schemes for generating the two colors, the original being to use a single bunch and two sets of undulators with different K-parameters. A development of the scheme has recently been shown, where two separate bunches in the same RF bucket are used for lasing at different wavelengths. We here investigate the feasibility of accelerating and compressing a double-bunch time structure generated in the photocathode electron gun for subsequent use in a soft X-ray FEL at the MAX IV Laboratory.  
TUP013 Experience and Initial Measurements of Magnetic Linearisation in the MAX IV Linac Bunch Compressors 1
  • S. Thorin, J. Andersson, M. Brandin, F. Curbis, L. Isaksson, M. Kotur, F. Lindau, E. Mansten, D. Olsson, R. Svärd, S. Werin
    MAX IV Laboratory, Lund University, Lund, Sweden
  • J. Björklund Svensson
    Lund University, Division of Atomic Physics, Lund, Sweden
  The MAX IV Linac is now in routine operation for injection into two storage rings, and as a high-brightness driver for a Short Pulse Facility (SPF). In short-pulse mode the electron bunch is created in a photo cathode gun and compressed in two double achromat bunch compressors that also linearize longitudinal phase space with the second order transfer matrix element T566. T566 in the compressors can be tweaked with weak sextupoles located at high dispersion. In this paper we present the current experience from operating the bunch compressors at MAX IV and results from initial measurements of longitudinal phase space using the zero-crossing method.  
Longitudinal Shaping of the Max IV Photocathode Gun Laser Pulses  
  • M. Kotur, J. Andersson, F. Curbis, F. Lindau, S. Thorin, S. Werin
    MAX IV Laboratory, Lund University, Lund, Sweden
  The longitudinal shape of the driver laser pulse plays an important role in producing a low-emittance beam in a photocathode electron gun. Here we present a Fourier-domain pulse shaping setup, which is being developed with the goal of being able to achieve arbitrary shapes of the UV laser pulse. Comparisons of the preliminary results with the standard pulse stacking scheme are discussed.