Author: Cutic, N.     [Čutić, N.]
Paper Title Page
TUPSO80 The MAX IV Linac and First Design for an Upgrade to 5 GeV to Drive an X-ray FEL 413
 
  • S. Thorin, F. Curbis, N. Čutić, M. Eriksson, O. Karlberg, F. Lindau, A.W.L. Mak, E. Mansten, S. Werin
    MAX-lab, Lund, Sweden
 
  The installation of the MAX IV linear accelerator is in full progress, and commissioning is planned to start in the second quarter of 2014. The 3 GeV linac will be used as a full energy injector for the two storage rings, and as a high brightness driver for a Short Pulse linac light source. The linac has been deigned to also handle the high demands of an FEL injector. The long term strategic plan for the MAX IV laboratory includes an extension of the linac to 5 GeV and an X-ray FEL. In this paper we present the both design concept and status of the MAX IV linac along with parameters of the 3 GeV high quality electron pulses. We also present the first design and simulation results of the upgrade to a 5 GeV X-ray FEL driver.  
 
WEPSO06 The Test-FEL at MAX-lab: Implementation of the HHG Source and First Results 507
 
  • F. Curbis, N. Čutić, F. Lindau, E. Mansten, S. Werin
    MAX-lab, Lund, Sweden
  • F. Brizuela, B. Kim, A. L'Huillier
    Lund University, Division of Atomic Physics, Lund, Sweden
  • M. Gisselbrecht
    SLF, Lund, Sweden
 
  The test-FEL at MAX-lab is a development set-up for seeding techniques. After the successful demonstration of coherent harmonic generation from a conventional laser, the new layout now presents a gas target for generation of harmonics. The drive laser will be up-converted and the low harmonics (around 100 nm) will seed the electron beam. The energy modulated electrons will then be bunched in the dispersive section and will radiate in the second undulator. We will detect the second harmonic of the HHG radiation around 50 nm. This experiment has several challenges never tried before: co-propagation of the electron beam and the drive laser, interaction of the electron beam with the gas in the target, no-focusing of the harmonics and no drive laser removal. The commissioning will show if this kind of in-line chamber has advantages with respect to more traditional approaches with optical beam transport. The results are relevant for many facilities that are planning to implement HHG seeding in the near future.  
 
WEPSO07 Simulation Studies for an X-ray FEL Based on an Extension of the MAX IV Linac 510
 
  • F. Curbis, N. Čutić, O. Karlberg, F. Lindau, A.W.L. Mak, E. Mansten, S. Thorin, S. Werin
    MAX-lab, Lund, Sweden
 
  It is well known that the few X-ray FELs around the world are severely overbooked by users. Having a medium energy linac, such as the one now being installed at the MAX IV laboratory, it becomes natural to think about slightly increasing the electron energy to drive an X-ray FEL. This development is now included in the long term strategic plan for the MAX IV laboratory. We will present the current FEL studies based on an extension of the MAX IV linac to 5 GeV to reach the Angstrom region. The injector for the MAX IV accelerator complex is also equipped with a photocathode gun, capable of producing low emittance electron beam. The bunch compression and linearization of the beam is taken care by two double achromats. The basic FEL layout would consist of short period undulators with tapering for extracting all the power from the electron beam. Self-seeding is considered as an option for increasing the spectral and intensity stability.