Author: Bousonville, M.
Paper Title Page
MOBL3 Electron Bunch Diagnostic at the Upgraded ELBE Accelerator: Status and Challenges 23
 
  • M. Kuntzsch, S. Findeisen, M. Gensch, B.W. Green, J. Hauser, S. Kovalev, U. Lehnert, P. Michel, F. Röser, Ch. Schneider, R. Schurig
    HZDR, Dresden, Germany
  • A. Al-Shemmary, M. Bousonville, M.K. Czwalinna, T. Golz, H. Schlarb, B. Schmidt, S. Schulz, N. Stojanovic, S. Vilcins
    DESY, Hamburg, Germany
  • E. Hass
    Uni HH, Hamburg, Germany
 
  Within the ELBE upgrade towards a Center for High Power Radiation Sources (HSQ), a mono energetic positron, a liquid lead photo neutron source and two new THz sources have been installed at the superconducting electron linac at ELBE. A variety of established as well as newly developed electron beam diagnostics were installed and tested. In this paper we want to present first results achieved with the currently existing prototype beam arrival time and bunch compression monitors (BAM, BCM) as well as one versatile EOS set-up. Based on these future developements and upgrades are discussed.  
slides icon Slides MOBL3 [3.578 MB]  
 
MOPC38 Overview on Electron Bunch and Photon Beam Diagnostic Techniques for CW Linear Accelerators Using the Example of ELBE 158
 
  • R. Schurig, S. Findeisen, M. Gensch, B.W. Green, J. Hauser, S. Kovalev, M. Kuntzsch, U. Lehnert, F. Röser, Ch. Schneider
    HZDR, Dresden, Germany
  • A. Al-Shemmary, M. Bousonville, M.K. Czwalinna, T. Golz, H. Schlarb, B. Schmidt, S. Schulz, N. Stojanovic, S. Vilcins
    DESY, Hamburg, Germany
  • E. Hass
    Uni HH, Hamburg, Germany
 
  For future light sources a continuous wave mode of operation enables perspectives for high precision time-resolved experiments. In order to ensure steady experimental conditions, various elements for electron bunch and photon beam diagnostics are used. Bunch Arrival Time Monitors (BAM), Bunch Compression Monitors (BCM), Electro-optical Sampling (EOS) and new types of THz-diagnostic are essential for the understanding of the machine’s behavior to generate stable secondary radiation. The detector readout benefits from the high repetition rate and allows data acquisition in frequency domain with enhanced sensitivity. The contribution will give an overview on CW Diagnostic elements at ELBE which are currently in commissioning state and first measurement results which have been carried out.  
 
WEPC32 Past, Present and Future Aspects of Laser-Based Synchronization at FLASH 753
 
  • S. Schulz, M. Bousonville, M.K. Czwalinna, M. Felber, M. Heuer, T. Lamb, J. Müller, P. Peier, S. Ruzin, H. Schlarb, B. Steffen, C. Sydlo, F. Zummack
    DESY, Hamburg, Germany
  • T. Kozak, P. Predki
    TUL-DMCS, Łódź, Poland
  • A. Kuhl
    Uni HH, Hamburg, Germany
 
  Free-electron lasers, like FLASH and the upcoming European XFEL, are capable of producing XUV and X-ray pulses of a few femtoseconds duration. For time-resolved pump-probe experiments and the externally seeded operation mode it is crucial not only to stabilize the arrival time of the electron bunches, but also to achieve a synchronization accuracy of external lasers on the same timescale. This can only be realized with a laser-based synchronization infrastructure. At FLASH, a periodic femtosecond laser pulse train is transmitted over actively stabilized optical fibers to the critical subsystems. In this paper we report on the present status and performance of the system, as well as its imminent upgrades and new installations. These include the connection of FLASH2, electron bunch arrival time monitors for low charges, a new master laser pulse distribution scheme, all-optical synchronization of the pump-probe laser and arrival time measurements of the UV pulses on the e-gun photocathode. Along with the coming connection of the acceleration modules to the master laser and the switch of the low-level hardware to the uTCA platform, an outlook to improved feedback strategies is given.