Dresden 2013 – scientific programme
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T: Fachverband Teilchenphysik
T 121: Beschleunigerphysik VIII (PWA II)
T 121.9: Talk
Tuesday, March 5, 2013, 16:00–16:15, WIL-C205
Bunching and phase focusing of laser generated proton beams — •Dennis Schumacher1, Simon Busold2, Christian Brabetz3, Ingo Hofmann1, Markus Roth2, Bernhard Zielbauer4, Oliver Boine-Frankenheim2, Abel Blazevic1, and Oliver Deppert1 — 1GSI Helmholtzzentrum für Schwerionenforschung — 2TU Darmstadt — 3Universität Frankfurt — 4HI Jena
Laser accelerated proton beams can reach very high intensities and very low emittances. Therefore they are suitable as ion sources for many applications. One is the coupling into common ion accelerator structures to replace pre accelerators that are used so far. The LIGHT (Laser Ion Generation, Handling and Transport) collaboration has been founded to develop ion optics and targets and optimize laser parameter to make this coupling most efficient. In a first step a short pulse beam line for the PHELIX-laser at GSI to the experiment site Z6 has been build in order to laser accelerate protons here. In a second step a pulsed solenoid has been established to collimate the divergent ion beam.
In a third step this collimated beam will be coupled into a bunching unit, which consists of a spiral resonator with three gaps which leads to an overall acceleration voltage of 1 MV. With this cavity it is not only possible to avoid the broadening of the pulse, but also to phase focus it. This talk presents also the progress towards the operation of the spiral resonator as buncher for a laser accelerated ion beam e.g. simulations, tests and performance data and shows the next steps of the beam shaping efforts.