Dresden 2014 – wissenschaftliches Programm

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BE: Beschleunigerphysik

BE 15: Beam Dynamics and Fields III

BE 15.7: Vortrag

Donnerstag, 3. April 2014, 17:15–17:30, ZEU 255

Determination of a working point for double-bunch electron-beam generation and transport in the FLASH accelerator at DESY — •Carlos Manuel Entrena Utrilla and Steffen Wunderlich — Deutsches Elektronen-Synchrotron, Hamburg, Germany

The future studies on particle-beam driven plasma-acceleration in the FLASHForward project at the FLASH accelerator facility at DESY in Hamburg, as well as other projects like the two-color FEL, require the production and transport of two electron bunches with a spacing of hundreds of femtoseconds within one RF bucket. The bunches are generated at the cathode by dividing the injector laser pulses with a split-and-delay optic system. They are then accelerated and compressed using the FLASH linear accelerator and its two bunch compressors. A method for the determination of the machine's working point, the voltages and phases of the accelerating modules, is presented. The determination is done with a three step optimization process: an initial analytical approach, a subsequent numerical optimization with one dimensional tracking procedure including collective effects and the full three dimensional simulation with the ASTRA and CSRtrack tracking codes.