Berlin 2005 – wissenschaftliches Programm
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K: Kurzzeitphysik
K 6: Poster
K 6.4: Poster
Montag, 7. März 2005, 16:45–18:00, Poster HU
Beam Emittance Measurement and Plasma Channel Properties for Channel-based Ion Beam Transport — •Renate Knobloch1, Stephan Neff1, Andreas Tauschwitz2, and D.H.H. Hoffmann1 — 1TU Darmstadt, FB Physik, Schloßgartenstr. 9, 64289 Darmstadt — 2GSI, Planckstr. 1, 64291 Darmstadt
Plasma-channel-based beam transport for heavy-ion-beam-driven inertial fusion is a promising final transport concept. Measurements of channel properties and ion beam emittance after transport are conducted at GSI.
The properties of ion-beam-induced plasma channels in several gases are studied for a wide range of pressure and voltage for a channel length of approximately 1 m. A comparison of different background gases shows that high-Z noble gases are more suitable to create channels for beam transport than low-Z noble gases or nitrogen. Laser-induced plasma channels are also analyzed.
The results of first measurements of the beam emittance behind the channel during beam transport demonstrate the feasibility of measuring beam emittance after a transport channel in a single shot. The data indicate no changes in the emittance within statistical errors.