Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 121: Beschleunigerphysik VIII (PWA II)
T 121.5: Vortrag
Dienstag, 5. März 2013, 15:00–15:15, WIL-C205
Experimental results on transport and focusing of laser accelerated protons — •Simon Busold1, Dennis Schumacher2, Christian Brabetz3, Oliver Deppert1, Martin Joost4, Florian Kroll4, Husam Al-Omari3, Abel Blazevic2, Bernhard Zielbauer2, Ingo Hofmann2, Vincent Bagnoud2, Tom Cowan4, and Markus Roth1 — 1TU Darmstadt, IKP, Schlossgartenstr. 9, 64289 Darmstadt — 2GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt — 3JWG Universität Frankfurt, IAP, Max von Laue Str. 1, 60438 Frankfurt — 4Helmholtzzentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328 Dresden
Irradiation of thin foils with high-intensity laser pulses became a reliable tool during the last decade for producing high-intensity proton bunches in about a pico-second from a sub-millimeter source. However, the energy distribution is of an exponential shape with a currently achievable cut-off energy <100 MeV (TNSA mechanism) and the beam is highly divergent with an energy-dependent envelope-divergence of up to 60 deg. Thus, for most applications it is necessary to be able to capture and control these protons as well as select a specific energy.
In the frame of the LIGHT collaboration, experimental studies were done at the PHELIX laser at GSI Darmstadt using a pulsed high-field solenoid and alternatively a permanent magnet quadrupole triplet in order to match the beam for injection into a RF cavity. The beam was characterized at several distances after the source and the results are compared to particle tracking simulations.