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FLASH User Workshop 2008

8-10 September 2008

Special topic: Pump Probe experiments with the new THz beamline at FLASH

chairs: Josef Feldhaus / Michael Gensch

DESY is planning a major upgrade of the FLASH facility in 2009. In particular, the electron beam energy will be increased by an additional accelerator module to reach wavelengths near the carbon K-edge, and 3.9 GHz cavities will be installed in the injector affecting the properties of the FEL pulse such as pulse energy, duration and structure. In addition, new instruments will become available in the experimental area. The workshop intended to inform present and potential users about these developments and to provide a forum for discussions about new research opportunities at FLASH as well as plans for further developments and extensions.

One day of the User Workshop was dedicated exclusively to the recently completed THz beamline. This beamline is presently undergoing extensive commissioning and continuous development and will become a regular part of the FLASH user facility in the new proposal period starting after the 2009 shutdown. Speakers were invited to present ideas for future pump-probe experiments utilizing the new THz beamline with the aim to direct the remaining comissioning towards the requirements of these intial experiments.

pdf files of selected presentations can be found below

General part

New installations in 2009, effect on beam properties (1.6 MB) Siegfried Schreiber/DESY  Layout of the HHG seeding experiment at FLASH (1.1 MB) Velizar Miltchev/UHH  FLASH II (807KB) Bart Faatz/DESY  Photon diagnostics (3.5 MB) Kai Tietdke/DESY  Pump-probe optical laser systems at FLASH (2.3 MB) Stefan Duesterer/DESY  User support and Guidelines (1.1 MB) Rolf Treusch/DESY  New FLASH proposals: planning, guidelines, ... (65KB) Elke Ploenjes/DESY  BL beamlines (1.1 MB) Sven Toleikis/DESY  Status PG2 (1.0 MB) Natalja Guerrasimova/DESY  Recent developments in multilayer optics (3.0 MB) Sasa Bajt  Welcome and introduction: FLASH User workshop 2008 (11.5 MB) Edgar Weckert/DESY

Special Topic part: Pump probe experiments at the THz beamline at FLASH

THz undulator beamline at FLASH (2.1 MB) Michael Gensch/DESY  History and Applications of coherent synchrotron radiation at THz frequencies (2.0 MB) Gwyn P. Williams/Jefferson Lab  The THz free electron laser FELBE at the radiation source ELBE (5.7 MB) Wolfgang Seidel/FZ Dresden-Rossendorf  Molecular alignment techniques and applications (633KB) Jonathan Marangos/Imperial College London  Strong field ionization at far infrared wavelength (3.6 MB) Marc Vrakking/FOM  Vibrational Control in Complex Solids (10.5 MB) Andrea Cavalleri / MPGSD  Field-assisted XUV photoionization: from near infrared to far infrared wavelength (1.0 MB) Markus Drescher/UHH